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Question 1 Which of the following are functions of the endocrine system?

Question 1

Which of the following are functions of the endocrine system?

Select one or more:

a. Regulates water balance

b. Control skeletal muscle contraction

c. Regulate metabolic rate

d. Controls reproductive function

e. Regulate equilibrium


Question 2

Hormones often cause a cell to elicit multiple responses; this is because:

Select one:

a. the receptors bind to several hormones at the same time

b. there are thousands of receptors on the cell membrane

c. during protein kinase activation, enzymes phosphorylate many other enzymes

d. the protein kinases are rapidly metabolized into functional amino acids


Question 5

Which of the following hormones are released from the Posterior Pituitary?

Select one or more:

a. Growth Hormone

b. Gonadotropin-releasing hormone

c. ADH

d. Progesterone

e. Oxytocin


Question 6

A relatively constant concentration of _____________ is present in blood due to chronic hormone regulation.

Select one:

a. Estrogen

b. Thyroid Hormone

c. Oxytocin

d. Cortisol

e. Epinephrine


Question 7

Which endocrine organ also contains a substantial amount of exocrine tissue?

Select one:

a. Pineal gland

b. Pancreas

c. Adrenal gland

d. Thyroid gland

e. Hypothalamus


Question 8

The major targets of growth hormone are:

Select one:

a. the adrenal glands

b. the liver and gallbladder

c. bones and skeletal muscles

d. the blood vessels


Question 9

The following are hormones produced in the hypothalamus EXCEPT:

Select one or more:

a. Anti-diuretic hormone (ADH)

b. Follicle-Stimulating Hormone (FSH)

c. Growth Hormone Inhibiting Hormone (GHIH)

d. Luteinizing Hormone (LH)

e. Corticotropin Releasing Hormone (CRH)

f. Growth Hormone Releasing Hormone (GHRH)


Question 10

In circumstances where the body requires prolonged or increased levels of a hormone, the DNA of target cells will specify the synthesis of more receptors on the surface of cells of the target organ. This is known as:

Select one:

a. cellular affinity

b. sensitivity increase

c. down regulation

d. up regulation

e. a stressor reaction


Question 11

What do hormones have in common?

Select one:

a. They are all lipid-soluble.

b. They bind to and interact with a receptor on or in the target cell.

c. They are bound to transport proteins ("escorts") in the blood.

d. They use the 2nd messenger mechanism (via a G-protein) to control the target cell.

e. They are made from cholesterol.


Question 12

All of the following hormones are lipid soluble EXCEPT:

Select one:

a. Thyroid hormone

b. Aldosterone

c. Insulin

d. Testosterone

e. Cortisol


Question 13

Which of these endocrine organs is largest in children and shrinks in adulthood?

Select one:

a. Kidneys

b. Pancreas

c. Adipose

d. Parathyroid gland

e. Thymus


Question 14

Which of the following hormones are triggered to be released in response to stress?

Select one or more:

a. Cholecalciferol

b. Luteinizing Homone

c. Melatonin

d. Cortisol

e. Epinephrine


Question 15

Thyroid hormone enters target cells in a manner similar to:

Select one:

a. growth hormone, because the thyroid works synergistically with thyroid hormone

b. glucagon, because the structure of glucagon is similar to that of thyroid hormone

c. steroid hormones, because both diffuse easily into target cells

d. insulin, because insulin is a small peptide

 Question 16

Osteocalcin is produced in the kidneys but targets the skeletal system.

Select one:




Question 17

The regulation of blood glucose levels is an example of humoral control of hormone release.

Select one:




Question 18

Calcitonin is produced in the kidneys but targets the bone.

Select one:




Question 19

The mineral iodine is necessary for the proper formation of atrial natriuretic peptide.

Select one:




Question 20

Lipid-soluble hormones attach to membrane-bound receptors.

Select one:




Question 21

Paracrines are long-distance chemical messengers that travel in blood to target cells.

Select one:




Question 22

Synergism occurs when one hormone acts in opposition to another hormone.

Select one:




Question 23

Water-soluble hormones have a short half-life.

Select one:




Question 24

Your neighbor's cat, Max, has been exhibiting some strange symptoms recently. He is:

lethargic (lacking energy)

urinating frequently

losing weight

constantly drinking water

Your neighbor took Max to the vet, where he received an immediate diagnosis of a condition that can effect humans as well as cats.

In your answer, tell me:

What was Max's diagnosis?

How would the vet have tested Max to determine his condition? (i.e. what did they test?)

Explain what endocrine gland(s) and hormone(s) are involved.


Question 25

What's the deal with the posterior pituitary? Some people say it is an endocrine gland, some people say it is not.

 Explain how the posterior pituitary is part of the endocrine system.


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