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Question 1

The secretion of hormone (A) causes a change in the amount of protein (X) in an organism. If this mechanism works by positive feedback, which of the following statements represents that fact?
An increase in (X) produces a decrease in (A)
An increase in (A) produces an increase in (X)
A decrease in (A) produces an increase in (X)

Answer 1

b. An increase in (A) produces an increase in (X)

Question 2

The endocrine gland that is probably malfunctioning if a person has a high metabolic rate is the ___________________.
Thymus Gland
Thyroid Gland
Pineal Gland
Posterior Pituitary Gland

Answer 2

b. Thyroid Gland

Question 3

The antagonistic hormones that regulate blood calcium level are _______________________________.
insulin-glucagon
Thyroxine-adrenocorticotropic hormone (ACTH)
Calcitonin (CT)-parathyroid hormone (PTH)

Answer 3

c. Calcitonin (CT)-parathyroid hormone (PTH)

Question 4

The endocrine gland that significantly contributes to setting the body’s biological clock is the _____________________.
Adrenal gland
Thymus gland
Pineal gland

Answer 4

c. Pineal gland

Question 5

he endocrine system works together with the ________ system to maintain the body’s equilibrium (homeostasis)?

Digestive system
Nervous system
Respiratory System

Answer 5

B. Nervous system

Question 6

Endocrine glands are different than exocrine glands in that exocrine glands:
Release hormones into the blood.
Secrete substances such as sweat, tears, saliva, milk, and digestive juices through ducts or opening to a body surface.
Affect many body organs.

Answer 6

b Secrete substances such as sweat, tears, saliva, milk, and digestive juices through ducts or opening to a body surface.

Question 7

The endocrine gland(s) referred to as the “master gland” is the:
Pancreas
Adrenal glands
Pituitary gland

Answer 7

c. Pituitary Gland