1
Q
What are the two major systems of internal communication in animals?
A
- Nervous system
- Endocrine system
The nervous system uses electrical signals, while the endocrine system uses chemical signals in the form of hormones.
2
Q
How does the nervous system communicate with effectors?
A
Quickly
The effects of the nervous system are short-lived.
3
Q
What is the communication method of the endocrine system?
A
Chemical signals in the form of hormones
The endocrine system targets virtually all cells of the body.
4
Q
True or false: The endocrine system acts quickly but has short-lived effects.
A
FALSE
The endocrine system is slower to act, but its effects are persistent.
5
Q
The endocrine system targets which cells in the body?
A
Virtually all cells
This widespread targeting allows for extensive hormonal communication.
6
Q
What is the function of the hypothalamus in the endocrine system?
A
Regulates hormonal activity
The hypothalamus plays a crucial role in maintaining homeostasis and controlling the pituitary gland.
7
Q
Which gland is located behind the thyroid glands?
A
Parathyroid glands
These glands are responsible for regulating calcium levels in the blood.
8
Q
Name the gland that is responsible for regulating metabolism and is located in the neck.
A
Thyroid gland
The thyroid gland produces hormones that regulate metabolism, energy levels, and overall growth.
9
Q
What is the role of the pituitary gland in the endocrine system?
A
Master gland that regulates other glands
The pituitary gland secretes hormones that control various bodily functions and other endocrine glands.
10
Q
Which gland is responsible for producing melatonin?
A
Pineal gland
The pineal gland regulates sleep patterns and circadian rhythms through melatonin secretion.
11
Q
Fill in the blank: The adrenal glands are located on top of the _______.
A
kidneys
The adrenal glands produce hormones such as adrenaline and cortisol, which help manage stress.
12
Q
What organ is involved in both the endocrine and digestive systems?
A
Pancreas
The pancreas produces insulin and glucagon for blood sugar regulation and digestive enzymes.
13
Q
True or false: The thymus is involved in the production of hormones that regulate metabolism.
A
FALSE
The thymus is primarily involved in the immune system, particularly in the development of T-cells.
14
Q
What is the primary function of the ovaries in the endocrine system?
A
Produce female sex hormones
Ovaries produce estrogen and progesterone, which regulate the menstrual cycle and reproductive functions.
15
Q
What is the role of the testes in the endocrine system?
A
Produce male sex hormones
Testes produce testosterone, which is responsible for male reproductive development and characteristics.
16
Q
What is the travel method of hormone signals?
A
Travel throughout the body
Hormone signals are distributed via the bloodstream to various target cells.
17
Q
What is the travel method of nerve signals?
A
Only to cells the nerve innervates (synapse)
Nerve signals are directed specifically to target cells through synapses.
18
Q
Describe the speed of hormone signals.
A
Slow acting (time needed to travel through blood)
Hormone signals take longer to reach their targets compared to nerve signals.
19
Q
Describe the speed of nerve signals.
A
Fast acting (action potentials reach targets in milliseconds)
Nerve signals are transmitted quickly due to action potentials.
20
Q
What is the duration of effect for hormone signals?
A
Sustained duration of effect
Hormone signals can have prolonged effects on target cells.
21
Q
What is the duration of effect for nerve signals?
A
Short duration of effect
Nerve signals typically result in immediate but brief responses.
22
Q
What are the primary functions of hormone signals?
A
- Growth
- Metabolic rate (body temperature)
- Regulating chemical composition of fluids
Hormones play crucial roles in various physiological processes.
23
Q
What are the primary functions of nerve signals?
A
- Reflexes
- Skeletal muscle contraction
- Glandular secretions such as sweating
Nerve signals are essential for rapid responses and motor functions.
24
Q
What are hormones?
A
Small chemical compounds produced by endocrine cells or glands
Hormones are released into the blood and travel throughout the body.
25
How do hormones produce a response?
Upon reaching the target cells
## Footnote
Hormones interact with specific cells to elicit a physiological response.
26
True or false: The same **hormone** can have a different effect on different cells.
TRUE
## Footnote
Hormones can trigger varied responses depending on the type of target cell.
27
What are the two types of **hormone circulation** in the blood?
* Always circulating hormones
* Hormones released under specific circumstances
## Footnote
Some hormones are consistently present in the bloodstream, while others are released in response to certain stimuli.
28
What are **hormones**?
Small chemical compounds produced by endocrine cells or glands
## Footnote
Hormones are released into the blood and travel throughout the body.
29
How do hormones produce a response?
Upon reaching the target cells
## Footnote
Hormones interact with specific cells to elicit a physiological response.
30
True or false: The same **hormone** can have a different effect on different cells.
TRUE
## Footnote
Hormones can trigger varied responses depending on the type of target cell.
31
What are the two types of **hormone circulation** in the blood?
* Always circulating hormones
* Hormones released under specific circumstances
## Footnote
Some hormones are consistently present in the bloodstream, while others are released in response to certain stimuli.
32
What are the **functions of hormones**?
* Regulate chemical composition of body fluids
* Control glandular secretions
* Control metabolism
* Involved in immunity
* Growth and development regulation
* Regulate reproductive system
## Footnote
Hormones play a crucial role in maintaining homeostasis and influencing various physiological processes.
33
Name the **selected endocrine organs**.
* Hypothalamus
* Pituitary gland
* Anterior pituitary
* Posterior pituitary
* Thyroid
* Adrenal Glands
* Pancreas
* Gonads
* Testes
* Ovaries
## Footnote
These organs play crucial roles in hormone production and regulation in the body.
34
What is the role of the **hypothalamus** in the endocrine system?
Regulates hormonal release from the pituitary gland
## Footnote
The hypothalamus is a key player in maintaining homeostasis and controlling various bodily functions.
35
What are the two parts of the **pituitary gland**?
* Anterior pituitary
* Posterior pituitary
## Footnote
Each part has distinct functions and secretes different hormones.
36
The **thyroid gland** is located near which structure?
Trachea
## Footnote
The thyroid gland is responsible for regulating metabolism through hormone production.
37
What are the **gonads** in males and females?
* Testes (males)
* Ovaries (females)
## Footnote
Gonads are responsible for producing sex hormones and gametes.
38
True or false: The **adrenal glands** are part of the endocrine system.
TRUE
## Footnote
The adrenal glands produce hormones that help regulate metabolism, immune response, and stress.
39
Fill in the blank: The **pancreas** has both endocrine and _______ functions.
exocrine
## Footnote
The pancreas plays a role in digestion as well as regulating blood sugar levels.
40
What is the **hypothalamus**?
The region of the brainstem that receives information from the nervous and endocrine systems
## Footnote
It can respond by releasing hormones.
41
What does the **hypothalamus** stimulate directly?
The posterior pituitary to release its hormones
## Footnote
This is part of its role in hormone regulation.
42
Why is the **hypothalamus** referred to as the **master endocrine organ**?
Because it controls the release of other hormones
## Footnote
It plays a central role in the endocrine system.
43
The **hypothalamus** acts on which gland to release hormones?
The anterior pituitary gland
## Footnote
This interaction is crucial for hormonal regulation.
44
True or false: The **hypothalamus** has only endocrine functions.
FALSE
## Footnote
The hypothalamus also has other nervous system functions.
45
What are the **two main parts** of the pituitary gland?
* Anterior pituitary
* Posterior pituitary
## Footnote
Each part has distinct functions and hormone secretions.
46
What is the function of the **hypophyseal portal veins**?
Transport hormones from the hypothalamus to the anterior pituitary
## Footnote
This system allows for direct communication between the hypothalamus and the anterior pituitary.
47
Fill in the blank: The **infundibulum** connects the **hypothalamus** to the __________.
pituitary gland
## Footnote
It serves as a stalk that links these two important structures.
48
What arteries supply blood to the **anterior pituitary**?
* Superior hypophyseal artery
* Inferior hypophyseal artery
## Footnote
These arteries are crucial for delivering oxygen and nutrients to the anterior pituitary.
49
What is the role of the **posterior hypophyseal veins**?
Drain blood from the posterior pituitary
## Footnote
They are involved in the venous return from the posterior pituitary.
50
True or false: The **capillary plexus** of the posterior pituitary is involved in hormone secretion.
FALSE
## Footnote
The capillary plexus is primarily associated with the anterior pituitary's hormone release.
51
What bone houses the **hypophyseal fossa**?
Sphenoid bone
## Footnote
The hypophyseal fossa is a depression in the sphenoid bone that contains the pituitary gland.
52
What is the size and location of the **pituitary gland**?
Marble-sized gland at the base of the brain
## Footnote
The pituitary gland plays a crucial role in hormone regulation.
53
The **pituitary gland** is divided into which two lobes?
* Anterior pituitary
* Posterior pituitary
## Footnote
Each lobe has distinct functions and hormone production.
54
What hormone does the **anterior pituitary** produce that affects many cells of the body?
Human growth hormone
## Footnote
This hormone increases protein synthesis in various cells.
55
What is the function of the **posterior pituitary**?
Releases ADH (antidiuretic hormone)
## Footnote
ADH works on the kidneys to cause water reabsorption and maintain blood volume and pressure.
56
True or false: The **posterior pituitary** produces human growth hormone.
FALSE
## Footnote
The anterior pituitary is responsible for producing human growth hormone.
57
Fill in the blank: The **posterior pituitary** releases _______ to help maintain blood volume and pressure.
ADH (antidiuretic hormone)
## Footnote
This hormone is crucial for water reabsorption in the kidneys.
58
What is the **function** of the **Pituitary Gland**?
Regulates various bodily functions through hormone secretion
## Footnote
The pituitary gland is often referred to as the 'master gland' because it controls other endocrine glands.
59
What is the role of the **Hypothalamus**?
Links the nervous system to the endocrine system
## Footnote
The hypothalamus controls the pituitary gland and regulates homeostasis.
60
What type of cells are involved in the secretion of hormones in the **Pituitary Gland**?
* Neurosecretory cells
## Footnote
These cells produce hormones that are released into the bloodstream.
61
What structure connects the **Hypothalamus** to the **Pituitary Gland**?
Infundibulum
## Footnote
The infundibulum is a stalk-like structure that supports the pituitary gland.
62
What is the **Optic Chiasm**?
The point where optic nerves cross
## Footnote
It is located near the hypothalamus and plays a role in vision.
63
What are the two main parts of the **Pituitary Gland**?
* Anterior Pituitary
* Posterior Pituitary
## Footnote
Each part has distinct functions and hormone secretions.
64
What is found in the **Capillary plexus** of the posterior pituitary?
Blood vessels that facilitate hormone release
## Footnote
This plexus allows for the direct release of hormones into the bloodstream.
65
What are the **Axons of neurosecretory cells** responsible for?
Transporting hormones to the axon terminal
## Footnote
These axons extend from the hypothalamus to the posterior pituitary.
66
Where is the **Thyroid Gland** located?
On the anterior surface of the trachea
## Footnote
The thyroid gland plays a crucial role in the endocrine system.
67
What does the **Thyroid Gland** produce?
Thyroid hormones
## Footnote
These hormones are essential for regulating various bodily functions.
68
Thyroid hormones are involved in regulating the **metabolic rate** by targeting which organs?
* Heart
* Muscles
* Liver
* Kidney
## Footnote
This regulation controls heat production in the body.
69
Thyroid hormones contain which essential element?
Iodine
## Footnote
Iodine is crucial for the synthesis of thyroid hormones.
70
True or false: **Thyroid hormone imbalances** are a common disorder, especially among older females.
TRUE
## Footnote
Hormonal imbalances can lead to various health issues.
71
What is the **anatomical location** of the **thyroid gland**?
Located anterior to the trachea, inferior to the larynx
## Footnote
The thyroid gland consists of two lateral lobes connected by an isthmus.
72
Name the **two lobes** of the thyroid gland.
* Right lateral lobe
* Left lateral lobe
## Footnote
Each lobe is responsible for hormone production.
73
What connects the **two lateral lobes** of the thyroid gland?
Isthmus of thyroid gland
## Footnote
The isthmus is a narrow band of tissue that joins the two lobes.
74
Identify the **major blood vessels** associated with the thyroid gland.
* Internal jugular vein
* Common carotid artery
## Footnote
These vessels supply blood to and from the thyroid gland.
75
What is the **function** of the **thyroid gland**?
Produces hormones that regulate metabolism
## Footnote
The thyroid gland plays a crucial role in the body's metabolic processes.
76
True or false: The **thyroid gland** is located posterior to the trachea.
FALSE
## Footnote
The thyroid gland is located anterior to the trachea.
77
Where are the **adrenal glands** located?
Above the kidneys
## Footnote
The adrenal glands are a pair of glands that play a crucial role in hormone production.
78
The adrenal glands are divided into two regions: the **inner** and **outer**. Name them.
* Adrenal medulla
* Adrenal cortex
## Footnote
Each region produces different hormones essential for various bodily functions.
79
What is the **function** of the adrenal medulla?
Produces hormones like adrenaline
## Footnote
The adrenal medulla is responsible for the body's fight-or-flight response.
80
What is the **function** of the adrenal cortex?
Produces hormones like cortisol and aldosterone
## Footnote
The adrenal cortex is involved in regulating metabolism, immune response, and blood pressure.
81
What are the **adrenal glands** located above?
Kidneys
## Footnote
The adrenal glands are situated on top of each kidney.
82
Which side of the body is the **left adrenal gland** located?
Left side
## Footnote
The left adrenal gland is positioned above the left kidney.
83
Which artery supplies blood to the **left adrenal gland**?
Left renal artery
## Footnote
The left renal artery provides blood supply to the left adrenal gland.
84
Which vein drains blood from the **left adrenal gland**?
Left renal vein
## Footnote
The left renal vein is responsible for draining blood from the left adrenal gland.
85
What is the **anatomical position** of the right adrenal gland?
Above the right kidney
## Footnote
The right adrenal gland is located on top of the right kidney.
86
Which artery supplies blood to the **right adrenal gland**?
Right renal artery
## Footnote
The right renal artery supplies blood to the right adrenal gland.
87
Which vein drains blood from the **right adrenal gland**?
Right renal vein
## Footnote
The right renal vein is responsible for draining blood from the right adrenal gland.
88
What major artery is located in the **abdominal area** supplying various organs?
Abdominal aorta
## Footnote
The abdominal aorta is a major blood vessel supplying blood to the abdominal organs.
89
What is the function of the **inferior vena cava**?
Drains blood from the lower body
## Footnote
The inferior vena cava carries deoxygenated blood from the lower body to the heart.
90
What is the **superior mesenteric artery** responsible for?
Supplying blood to the intestines
## Footnote
The superior mesenteric artery supplies blood to the small intestine and part of the large intestine.
91
What hormones does the **adrenal medulla** produce upon receiving signals from the nervous system?
* Epinephrine (adrenalin)
* Norepinephrine (noradrenalin)
## Footnote
These hormones are secreted in response to stress and are key to the 'fight or flight' response.
92
The **fight or flight** response is triggered by the adrenal medulla in response to what type of signals?
Stress (good or bad)
## Footnote
This response prepares the body to either confront or flee from a perceived threat.
93
List some **effects** of the hormones produced by the adrenal medulla during the fight or flight response.
* Increased heart rate
* Increased respiration
* Shunting blood away from the gut
* Increased supply to the heart and skeletal muscles
* Mobilization of energy sources for the muscles
## Footnote
These effects enhance physical performance in stressful situations.
94
True or false: The hormones from the adrenal medulla act faster than nerve signals from the sympathetic nervous system.
FALSE
## Footnote
Adrenal medulla hormones are slower acting but have a longer lasting effect than nerve signals.
95
What is the role of the **adrenal cortex**?
Produces steroid hormones
## Footnote
The adrenal cortex is stimulated by stress.
96
What hormone does the adrenal cortex produce that promotes the conversion of proteins and fats into glucose?
Cortisol
## Footnote
Cortisol is a corticosteroid that becomes available as fuel for the fight-or-flight response.
97
True or false: **Cortisol** has the effect of temporarily reducing inflammation.
TRUE
## Footnote
This reduction in inflammation allows for the fight-or-flight response even with injury.
98
Fill in the blank: The adrenal cortex produces **_______** hormones.
steroid
## Footnote
These hormones are crucial for various bodily functions, especially during stress.
99
What is the **pancreas**?
An organ with both exocrine and endocrine functions
## Footnote
The pancreas plays a crucial role in digestion and hormone regulation.
100
What are the **exocrine functions** of the pancreas?
* Production of pancreatic juice
* Release into the pancreatic duct
* Release into the small intestine
## Footnote
Pancreatic juice contains digestive enzymes and bicarbonate ions.
101
What does the **pancreatic juice** contain?
* Digestive enzymes
* Bicarbonate ions
## Footnote
These components aid in digestion within the small intestine.
102
What are the **endocrine functions** of the pancreas carried out by?
Small groups of cells called **pancreatic islet cells** (or Islets of Langerhans)
## Footnote
These cells are interspersed within the many exocrine cells.
103
True or false: The pancreas has only exocrine functions.
FALSE
## Footnote
The pancreas has both exocrine and endocrine functions.
104
**What hormone is secreted when blood glucose levels are high?**
insulin
## Footnote
Insulin causes blood glucose to be taken up by metabolically active cells and converted into glycogen for storage in the liver.
105
**What effect does insulin have on blood glucose levels?**
* Causes uptake of glucose by cells
* Converts glucose into glycogen for storage
## Footnote
Insulin production is high after eating.
106
**What hormone is secreted when blood glucose levels are low?**
glucagon
## Footnote
Glucagon causes glycogen in the liver to be converted into glucose to increase blood glucose levels.
107
**What effect does glucagon have on blood glucose levels?**
* Converts glycogen in the liver into glucose
* Increases blood glucose levels
## Footnote
Glucagon is secreted when blood glucose levels are low.
108
**Diabetes Mellitus** refers to disorders associated with what?
Decreased insulin production or activity
## Footnote
Diabetes Mellitus encompasses various types of diabetes, primarily affecting glucose metabolism.
109
What is **Type I Diabetes Mellitus** inaccurately called?
Juvenile diabetes or insulin-dependent diabetes
## Footnote
Type I diabetes is characterized by autoimmune destruction of insulin-producing cells.
110
What causes the body to use its cellular stores of **protein and fat** as energy sources in Type I Diabetes?
Lack of insulin
## Footnote
Insulin is necessary for cells to take up glucose from the blood.
111
What happens to **glucose levels** in the blood in Type I Diabetes?
They become very high
## Footnote
High glucose levels lead to glucose being excreted in the urine, which is abnormal.
112
Why do people with diabetes experience **frequent urination**?
Glucose in the urine causes water to follow due to osmosis
## Footnote
This is a common symptom of diabetes.
113
How is Type I Diabetes typically managed?
Insulin injections
## Footnote
Insulin therapy is essential for individuals with Type I Diabetes to regulate blood glucose levels.
114
What is **Type II diabetes mellitus** inaccurately called?
* Adult-onset diabetes
* Insulin-independent diabetes
## Footnote
These terms are misleading as Type II diabetes can occur in non-adults and involves insulin.
115
In **Type II diabetes mellitus**, insulin is produced but is not _______.
effective
## Footnote
This ineffectiveness can lead to elevated blood glucose levels.
116
What are possible causes of **Type II diabetes mellitus**?
* Lifestyle (obesity, inactivity)
* Genetic predisposition
## Footnote
These factors contribute to the development of insulin resistance.
117
In **Type II diabetes mellitus**, what happens to pancreatic insulin-producing cells?
They are not destroyed
## Footnote
This distinguishes Type II from Type I diabetes, where these cells are typically destroyed.
118
What can **Type II diabetes mellitus** still result in?
* Elevated blood glucose levels
* Similar problems to Type I diabetes
## Footnote
Despite differences in insulin production, the complications can be similar.
119
How can **Type II diabetes mellitus** be managed?
By diet - carbohydrate restrictions
## Footnote
Dietary management is crucial for controlling blood glucose levels.
120
What are the **sites of gamete production** in the human body?
* Testes
* Ovaries
## Footnote
Testes and ovaries also produce hormones for the development and maintenance of secondary sex characteristics.
121
The **hypothalamus** and **pituitary gland** are part of which system in the body?
Endocrine system
## Footnote
They play a crucial role in hormone regulation and overall body functions.
122
Which gland is responsible for regulating metabolism and is located in the neck?
Thyroid gland
## Footnote
The thyroid gland produces hormones that regulate metabolism.
123
List the organs mentioned in the text that are part of the human body.
* Trachea
* Thymus
* Heart
* Stomach
* Kidney
* Uterus
* Ovary
* Testes
## Footnote
These organs have various functions, including hormone production and gamete production.
124
True or false: The **hormones produced** by the testes and ovaries do not influence behavior.
FALSE
## Footnote
Hormones produced by these organs play a role in behavior as well as physical development.
125
What are **testes**?
Paired, external structures found in males that produce sperm
## Footnote
Testes also synthesize hormones called androgens such as testosterone.
126
What hormone do **testes** synthesize?
Androgens such as testosterone
## Footnote
Testosterone plays a crucial role in male development and characteristics.
127
The production of **testosterone** in the developing embryo determines the gender: _______.
male
## Footnote
Testosterone is key in establishing male characteristics during embryonic development.
128
At **puberty**, what are the roles of the testes?
* Development of secondary sex characteristics
* Facial hair
* Voice changes
* Increased muscle mass
* Sperm production
## Footnote
These changes are driven by the increase in testosterone levels.
129
What are the **paired structures** in females that produce ova or eggs?
Ovaries
## Footnote
Ovaries also synthesize hormones called estrogens and progesterone.
130
What hormones do the **ovaries** synthesize?
* Estrogens
* Progesterone
## Footnote
These hormones are involved in various reproductive functions.
131
At **puberty**, which hormones are involved in the development of secondary sex characteristics?
* Estrogens
* Progesterone
## Footnote
These hormones also contribute to egg maturation and the menstrual cycle.
132
The **menstrual cycle** prepares the uterus for possible _______.
pregnancy
## Footnote
This cycle occurs monthly and is regulated by ovarian hormones.
133
What role do **hormones** from the ovaries play in **lactation**?
They are involved in milk production
## Footnote
Hormones like progesterone play a crucial role during pregnancy and lactation.
HS: bio prep
flashcards
Decks in class (19)
# Cards
-
intro to a+p27
-
c+f of 11 principal systems of human body29
-
characteristics of living things60
-
HS: chem - building blocks of life157
-
cell structure and function208
-
tissues177
-
nervous system162
-
endocrine system133
-
medical terminology87
-
musculoskeletal system - bones177
-
cardiovascular system168
-
musculoskeletal system: joints78
-
musculoskeletal system: muscles78
-
lymphatic system92
-
respiratory system136
-
urinary system118
-
MS: NMJ/ muscle names+actions102
-
MS: muscles (o/i’s, location, action) + ligaments50
-
digestive system52
