Tissue

Question 1

What is tissue?

Answer 1

A group of cells with common functions

Question 2

How can we differentiate tissue type under microscope?

Answer 2

Epithelial tissue-cells only
Connective tissue-cell living in matrix with fibers
Nerve tissue-Unique shape

Question 3

What are 4 main types of tissue?

Answer 3

Epithelial tissue
Connective Tissue
Muscle Tissue
Nervous Tissue

Question 4

Features of Skeletal muscle

Answer 4

-Composed of muscle cells or muscle fibers
-All cells consist of filaments
-All muscle contraction relies on Ca2+ ions
-innervated

Question 5

Function of skeletal muscle

Answer 5

Body movement

Question 6

Features of Nervous tissue

Answer 6

All nervous tissue forms a brain

Question 7

Function of nervous tissue

Answer 7

Receive , processing and transmission of stimuli

Question 8

Smooth muscle features and their function

Answer 8

-spindle shaped cells
-no striation
-innervated by autonomic nervous system
-contains 2 layers
1)Circular-constrict /lengthen the organ
2)Longitudinal-dilate/ shorten the organ

function-involuntary movement

Blood vessels walls
Airways
GI walls
Uterus walls
Bladder

Question 9

Cardiac muscle features and their function

Answer 9

-short and branched fibers that are interconnected by intercalated disks
-striated
-single centrally located nuclei
-innervated by autonomic nervous system
cells—->cardiomyocytes

function-to contract heart to push out blood

Heart

Question 10

Skeletal muscle structure

Answer 10

Sarcomere——>Myofibril——>Muscle fiber/cell——>Fesicle——>Muscle tissue

Sarcomere-contains thinner actin filaments and thicker myosin filaments

Lining of muscle fiber-endomysium(connective tissue)
Lining of Fesicle-Perimysium(fibrous connective tissue)
Lining of muscle tissue-Epimysium(irregular connective tissue)

Question 11

How muscle joins to bone?

Answer 11

1)directly(epimysium of muscle binds to periosteum if bone or perichondrium of cartilage)

2)indirectly via tendons or aponeurosis(flat tendons)

Question 12

Skeletal muscle features and their function (Most abundant)

Answer 12

-bundle of long muscle cells or fibers surrounded by endomysium
-multinuclei in periphery
-striated b/c of sarcomere
-innervated by somatic nervous system
cells—->Myoblasts

function-voluntary movement , regulates body temp by releasing heat during contraction

All around body
Sphincter muscle in GI and urinary tract

Question 13

Types of nervous tissue

Answer 13

1)Neurons
2)Gilia or neurogilia

Question 14

Types of muscle tissue

Answer 14

1)Skeletal muscle
2)Cardiac muscle
3)Smooth muscle

Question 15

Neuron features and their function

Answer 15

-contains 1)cell body 2)dendrite 3)axon hillock 4)single axon 5)terminal branches

Dendrite receives stimuli
Axon transmits response
Terminal branch release neurotransmitter

Question 16

Neurons are amitotic. True or false

Answer 16

True

Question 17

Gilia and their function

Answer 17

Function-Nourish, insulate , replenish neurons
-modulate neuron functions

Question 18

What are the func of exoskeleton in arthropods and carbs

Answer 18

Protection and muscle attachment

Ingrowths of exoskeleton are called apodomes——> muscle attachment

Question 19

What are endoskeleton

Answer 19

Bonds and vertebrates

Question 20

Why do cells divide?

Answer 20

Cells are surrounded by ECF, cells receive nutrients by diffusion. If the cell is too large, the central portion of the cell wont be accessible to the diffusion

Therefore, cells divide

Question 21

What are the differences between the metabolic rate of endoskeletons and exoskeletons?

Answer 21

Metabolic rate of endoskeleton are low, bcuz they rely on environmental temp to maintain their temp

Endoskeleton ——> obtain heat from metabolism of food to maintain constant body tem

Question 22

What is torpor?

Answer 22

An ability of the organisms to survive in the adverse conditions of the environment

Eg, hibernation-lower body temp to acquire low MR

Question 23

What are the two body cavities in a body?

Answer 23

Two body cavities- dorsal cavity and ventral cavity Dorsal cavity- spinal cavity and cranial cavity

Ventral cavity- thoracic cavity and abdominal cavity+ pelvic cavity

Question 24

How many types of tissues

Answer 24

4

Epithelial tissue
Muscle tissue
Connective tissue
Nervous tissue

Question 25

How many types of muscle tissues are there?

Answer 25

3 types Skeletal - striated -multiple nuclei Smooth- non-striated- a single nucleus at the centre Cardiac- smooth- non striated- single nucleus

Question 26

What is a tissue?

Answer 26

A group of cells that have the same structure and function.

Question 27

How are tissues organized in the body?

Answer 27

Cells form tissues, tissues form organs, and organs form organ systems.

Question 28

Give an example of an organ with multiple physiological roles.

Answer 28

The pancreas produces digestive enzymes (digestive system) and regulates blood sugar (endocrine system).

Question 29

What are the four main types of animal tissue?

Answer 29

Epithelial tissue, Connective tissue, Muscle tissue, Nervous tissue.

Question 30

How is epithelial tissue classified?

Answer 30

By the shape of the cells and the number of layers.

Question 31

What are the two types of bone?

Answer 31

Compact bone, Spongy bone.

Question 32

What is the function of platelets?

Answer 32

Blood clotting.

Question 33

What are the three types of muscle tissue?

Answer 33

Skeletal muscle, Smooth muscle, Cardiac muscle.

Question 34

Which muscle type is voluntary?

Answer 34

Skeletal muscle.

Question 35

Which muscle types are involuntary?

Answer 35

Smooth muscle and Cardiac muscle.

Question 36

Where is skeletal muscle found?

Answer 36

Attached to bones.

Question 37

Where is smooth muscle found?

Answer 37

Walls of digestive tract, urinary bladder, arteries.

Question 38

Where is cardiac muscle found?

Answer 38

Heart.

Question 39

What are the main components of nervous tissue?

Answer 39

Neurons and Glial cells.

Question 40

What is the function of dendrites?

Answer 40

Receive nerve impulses from other neurons.

Question 41

What is the function of the axon?

Answer 41

Transmit impulses to other neurons or muscles.

Question 42

What is the function of glial cells?

Answer 42

Support, nourish, and protect neurons.