Exam 5 IClicker Questions

Question 1

what is the release point for hormones synthesized in the hypothalamus, with ultimate release from the posterior pituitary

Answer 1

capillary plexus

Question 2

What hormone stimulates GH secretion

Answer 2

dopamine

Question 3

What inhibitor is lost in PPID horses

Answer 3

dopamine

Question 4

Which of the following will stimulate GH secretion?

• hyperglycemia
• somatostatin
• decreased fatty acids
• somatomedins

Answer 4

decreased fatty acids

Question 5

What will inhibit ADH secretion

• increased plasma osmolarity
• hypervolemia
• decreased blood pressure
• pain

Answer 5

hypervolemia

Question 6

Which thyroid hormone is produced in the largest quantities?

Answer 6

thyroxine

Question 7

Which enzyme oxidizes iodidie to iodine within the follicular lumen

• deiodinase
• thyroid peroxidase
• thryoid proteases
• tyrosine deiodinase

Answer 7

thyroid peroxidase

Question 8

Which pancreatic cell typr produces glucagon

Answer 8

alpha cell

Question 9

What will inhibit insulin secretion

Answer 9

fasting

Question 10

What effect does insulin have on free fatty acid storage in adipose tissue

Answer 10

increase

Question 11

What will stimulate glucagon secretion?

Answer 11

amino acids

Question 12

What is the most important form of Ca for biological activity

Answer 12

Ionized calcium

Question 13

What is an action of PTH?

• stimulates phosphate reabsorption in the kidneys
• inhibits bone reabsorption
• stimulates vitamin D synthesis in kidneys
• inhibits Mg reabsorption in kidneys

Answer 13

stimulates vitamin D synthesis in kidneys

Question 14

What is an intermediate compound in the synthesis of melatonin

Answer 14

serotonin

Question 15

Which essential fatty acid is used to synthesize prostanoids with 3 double bonds

Answer 15

Eicosapentaenoic acid

Question 16

Regarding homeostasis, what would be considered the effector in the maintenance of arterial blood pressure

• heart
• baroreceptors in the aorta
• medulla oblongata

Answer 16

heart

Question 17

what hormone type is derived from fatty acids

Answer 17

Eicosanoids

Question 18

Where is the signal peptide degraded during the process of peptide/protein hormone synthesis

Answer 18

endoplasmic reticulum

Question 19

Where would the protein/peptide process occur

Answer 19

golgi

Question 20

If a higher hormone concentration is required to reach 50% of the maximal response, what has happened to hormone synthesis

Answer 20

decreased

Question 21

With which hormone receptor system is protein kinase A associated

Answer 21

Adenylyl cyclase system

Question 22

With which hormone receptor system is protein kinase C associated

Answer 22

phospholipase C system

Question 23

What hormone provides tonic inhibition for TSH release

Answer 23

Dopamine

Question 24

In hyperthyroidism, what would the expected level of circulating TSH be if the disorder is located in the hypothalamus or pituitary

• high
• low
• no change

Answer 24

high

Question 25

What is the predominant catecholamine produced by the adrenal medulla

Answer 25

Epinephrine

Question 26

How much Epinephrine is produced via the adrenal medulla

Answer 26

80%

Question 27

How much Norepinephrine is produced via the adrenal medulla

Answer 27

20%

Question 28

What will stimulate aldosterone secretion

Answer 28

decrease in ECF volume

Question 29

What effect will cortisol have on glycogenesis in the liver

• increase
• decrease
• no change

Answer 29

increase

Question 30

Which dysfunction is associated with cushing’s syndrome

Answer 30

adrenal tumor