Week 8 - Endocrine

Question 1

Aldosterone ________.
Select one:

a. is secreted by the neurohypophysis
b. functions to increase sodium reabsorption
c. presence increases potassium concentration in the blood
d. production is greatly influenced by ACTH

Answer 1

b

Question 2

Gluco-neo-genesis (formation of new glucose molecules from non-carbohydrate sources) occurs in the liver due to the action of ________.

Select one:

a. aldosterone
b. insulin
c. secretin
d. cortisol

Answer 2

d

Question 3

The most important regulator of electrolyte concentrations in extracellular fluids is \_\_\_\_\_\_\_\_.
Select one:
a. insulin
b. aldosterone
c. glucagon
d. cortisol

Answer 3

b

Question 4

When it becomes necessary to enlist the fight-or-flight response, a hormone that is released during the alarm phase of the general adaptation syndrome is ________.

Select one:

a. estrogen
b. adrenaline
c. thyroid
d. renin

Answer 4

b

Question 5

ADH ________.
Select one:

a. increases urine production
b. promotes dehydration
c. is produced in the adenohypophysis
d. is inhibited by alcohol

Answer 5

d

Question 6

ACTH ________.

Select one:

a. is secreted by the posterior pituitary
b. is secreted by the anterior pituitary
c. secreted by the adrenal medulla
d. secreted by the pancreas

Answer 6

b

Question 7

Which of the following is not a category of endocrine gland stimulus?

Select one:

a. enzyme
b. humoral (relating to body fluids and/or immune response)
c. neural
d. hormonal

Answer 7

a

Question 8

Mineralocorticoid is to aldosterone as glucocorticoid is to ________.

Select one:

a. testosterone
b. estrogen
c. cortisol
d. adrenaline

Answer 8

c

Question 9

The major targets of growth hormone are \_\_\_\_\_\_\_\_.
Select one:
a. the blood vessels
b. the adrenal glands
c. the liver
d. bones and skeletal muscles

Answer 9

d

Question 10

The parathyroid glands maintain adequate levels of blood calcium. This is accomplished through ________.

Select one:

a. blocking the action of growth hormone
b. targeting the bone and activating osteoclasts so that calcium will be released
c. targeting the osteoblasts so that calcium will be released
d. slowing the activity of tissues that require calcium for activity

Answer 10

b

Question 11

Growth hormone:

Select one:

a. promotes long bone growth during formative years
b. secretion results in a decrease in muscle mass
c. is also called somatostatin
d. is regulated by humoral mechanisms

Answer 11

a

Question 12

The posterior pituitary gland secretes

Select one:

a. TSH
b. FSH
c. ADH
d. ACTH

Answer 12

c

Question 13

Cells of the adrenal cortex produce

Select one:

a. aldosterone
b. adrenaline
c. insulin
d. ACTH

Answer 13

a

Question 14

The hormone which increases the reabsorption of sodium ions and water from the urine is

Select one:

a. insulin
b. cortisol
c. aldosterone
d. adrenaline

Answer 14

c

Question 15

The enzyme renin is responsible for the activation of

Select one:

a. erythropoetin
b. cortisol
c. angiotensin
d. adrenaline

Answer 15

c

Question 16

Insulin, is synthesised by the beta cells of the pancreas. This hormone is released:

Select one:

a. when the body’s glucose level drops
b. when the body’s glucose level rise
c. in excessive amounts in obese people.
d. in response to severe physical stress (i.e. - a 25 km run)

Answer 16

b

Question 17

The thyroid hormone contains the mineral

Select one:

a. iodine
b. potassium
c. sodium
d. iron

Answer 17

a

Question 18

Which of the following is not a hormone from the anterior pituitary?

Select one:

a. ADH
b. TSH
c. growth hormone
d. ACTH

Answer 18

a

Question 19

When blood glucose levels fall

Select one:

a. peripheral cells take up less glucose
b. insulin is secreted
c. glucagon is released
d. protein synthesis decreases

Answer 19

c

Question 20

The islets of Langerhans produces hormones in which organs?

Select one:

a. kidney
b. liver
c. pancreas
d. heart

Answer 20

c