Download Practice Quiz

Practice Quiz
Endocrine Physiology
Physiology Fall 2009
1. An individual suffering from
primary hyperthyroidism would
exhibit which of the following
symptoms?
a. increased T3 secretion
b. Weight loss
c. Hyperpigmentation
d. hypothermia
e. elevated levels of TSH
2. A fall (decrease) in plasma calcium
concentration should result in:
a. Increased parathyroid hormone
secretion
b. More conversion of Vitamin D to the
active hormone in the kidney
c. More excretion of Ca++ in urine
d. Decreased resorption of bones by
osteoclasts
3. Which of the following is released
from the anterior pituitary gland?
a. Leutinizing hormone
b. Prolactin
c. Oxytocin
d. Thyroid stimulating hormone
e. Dopamine
f. Vasopressin
g. Gonadotropin Releasing Hormone
4. Which of the following lead(s) to an
increase in cortisol?
a.
b.
c.
d.
e.
f.
g.
Increased adrenocortotropic hormone
Decreased corticotropin releasing hormone
Increased thyroid stimulating hormone
Prolonged exposure to cold
Psychological anxiety
Increased levels of Vasopressin
Cytokines from cells of the immune system
5. Cell of the adrenal cortex secrete
more aldosterone in response to
which of the following ?
a.
b.
c.
d.
e.
f.
g.
Increasing plasma concentration of Na+
Increasing plasma concentration of Ka+
Angiotensinogen
Angiotensin I
Angiontensin II
Renin
ACTH
6. Addison’s Disease is characterized by:
a. Increased cortisol
b. Disturbances in plasma electrolytes
c. Decreased adrenocorticotropic
hormone secretion
d. Less than normal aldosterone
secretion
e. Increased sodium excretion in the
urine
f. Patchy hyperpigmentation of skin
7. Which of the following hormones
travels in the blood bound to carrier
proteins?
a. Oxytocin
b. T4
c. Aldosterone
d. Leutinizing hormone
e. Estradiol
f. TSH
g. EPI
8. Gonadotropin releasing hormone is
synthesized in and released from the:
a. Anterior pituitary
b. Posterior pituitary
c. Adrenal medulla
d. hypothalamus
9. A 40 year old woman develops an
adenoma in the adenohypophysis
which secretes excessive amounts of
Growth Hormone. Which of the
following are to be expected:
a. She grows abnormally tall
b. Plasma levels of IGF-1 will be high.
c. Plasma levels of GHRH will be high
d. Bones of the face, hands, and feet will
gradually atrophy (get smaller.)
10. Which of the following is released
from the adrenal medulla?
a. Norepinephrine
b. Testosterone
c. Adrenocorticotropic hormone
d. Cortisol
e. Epinepherine
11. Which of the following reaches its
target cells by first entering capillaries
in the median eminence?
a. Norepinephrine
b. TSH
c. Adrenocorticotropic hormone
d. Cortisol
e. Dopamine
f. Somatostatin
g. Corticotropin Releasing Hormone.
12. Which ONE of the following
hormones is eliminated most rapidly
from the bloodstream?
a. Norepinephrine
b. TSH
c. Cortisol
d. T3
e. Estradiol
f. Aldosterone
13. What is the source of renin?
a. The adrenal cortex
b. The adrenal medulla
c. The anterior pituitary
d. Cell of the macula densa
e. Juxtaglomerular cells in the kidney
f. The liver
14. Drugs that block the activity of
angiotensin converting enzyme are
used to treat people with high blood
pressure. Blocking ACE will
a.
b.
c.
d.
Prevent the secretion of renin
Prevent the formation of Angiotensin I
Prevent the formation of Angiotensin II
Cause a person to become very thirsty.
15. Angiotensin II has the following
actions:
a. Suppresses thirst
b. Contracts smooth muscles of blood
vessels thereby raising blood pressure
c. Stimulates the secretion of aldosterone
d. Stimulates the secretion of cortisol
16. In patients with Hashimoto’s disease
the thyroid gland is destroyed by cells
of the immune system. Which of the
following would be elevated in the
blood of a person with untreated
Hashimoto’s disease ?
a.
b.
c.
d.
T3
T4
TSH
TRH
17. In patients with untreated
Hashimoto’s disease which of the
following would be expected?
a. high blood pressure
b. tachycardia (higher than normal heart
rate)
c. diarrhea
d. hypothermia
18. Which of the following hormones
cannot be effectively administered in
tablets taken orally?
a.
b.
c.
d.
e.
T3
TSH
Vasopressin
Cortisol
Growth hormone
19. Which of the following hormones
have receptors on the cell surface of
their target cells?
a.
b.
c.
d.
e.
f.
g.
h.
T3
TSH
TRH
EPI
Cortisol
Aldosterone
Insulin
Prolactin
20. Suppose a patient presents with
high levels of TSH and high levels of T3
and T4. The diagnosis is most likely
a.
b.
c.
d.
Primary hyposecretion
Secondary hyposecretion
Primary hypersecretion
Secondary hypersecretion.
Answers to Practice Quiz
•
•
•
•
•
•
•
•
•
•
1 ab
2 abd
3 abd
4 adefg
5 be
6 bdf
7 bce
8d
9b
10 ae
•
•
•
•
•
•
•
•
•
•
11 efg
12 a
13 e
14 c
15 bc
16 cd
17 d
18 bce
19 bcdgh
20 d