Ch20 QUIZ Flashcards
0
Q
- Which of the following is TRUE regarding thyroid hormone & thyroid-stimulating hormone (TSH)?
a. Decreased anterior pituitary release of TSH stimulates its secretion
b. TSH is secreted in excess when stimulated by T4
c. TSH secretion is regulated by thyrotropin-releasing hormone
d. TSH secretion is controlled by positive feedback
A
c. TSH secretion is regulated by thyrotropin-releasing hormone
1
Q
- Which of the following is NOT a characteristic of a hormone?
a. Hormones have specific rates & rhythms of secretion
b. Hormones operated independent of feedback systems
c. Hormones affect only cells with appropriate receptors
d. Kidneys excrete hormones
A
b. Hormones operated independent of feedback systems
2
Q
- Which of the following is NOT one of the three responses of hormones when they interact with the receptor?
a. Acting on preexisting channel-forming proteins to alter membrane permeability
b. Activating preexisting proteins through a second-messenger system
c. Activating genes to cause protein synthesis
d. Acting on genes for DNA replication
A
d. Acting on genes for DNA replication
3
Q
- Which of the following terms means “obvious changes in cell function that result from stimulation by a particular hormone?”
a. Up-regulation
b. Down-regulation
c. Direct effects
d. Permissive effects
A
c. Direct effects
4
Q
- Which of the following is NOT a second messenger?
a. DAG
b. cAMP
c. Norepinephrine
d. IP3
A
c. Norepinephrine
5
Q
- Which of the following is TRUE statement regarding the hypothalamus?
a. It is divided into two nuclei
b. It is connected to the anterior pituitary by a single membrane
c. It is connect to the posterior pituitary by blood vessels
d. The pituitary gland is located in the sella turcica
A
d. The pituitary gland is located in the sella turcica
6
Q
- Which of the following is NOT part of the posterior pituitary?
a. Median eminence
b. Stalk
c. Pars distalis
d. Infundibular process
A
c. Pars distalis
7
Q
- Which of the following is secreted by the posterior pituitary?
a. Oxytocin
b. Calcitonin
c. Thyroid-stimulating hormone (TSH)
c. Parathyroid hormone
A
a. Oxytocin
8
Q
- Which of the following hormones is secreted by the anterior pituitary?
a. Androgen
b. Prolactin
c. Thyroid
d. Oxytocin
A
b. Prolactin
9
Q
- Which of the following is NOT found in the thyroid gland?
a. C cells
b. Follicles
c. Isthmus
d. Chromophilis
A
d. Chromophilis
10
Q
- Which of the following is a TRUE statement regarding the parathyroid gland(s)?
a. There are at least 6 to 10 pairs of glands
b. They are large & make up the majority of the thyroid gland
c. They produce thyroid hormone
d. Parathyroid hormone (PTH) is the most important factor in CA++ regulation
A
d. Parathyroid hormone (PTH) is the most important factor in CA++ regulation
11
Q
- Which of the following is NOT one of the three type of hormone-secreting cells in the pancreas?
a. Alpha
b. Beta
c. F
d. Delta
A
c. F
12
Q
- A person is diagnosed with DM & is unable to produce insulin. Which of the following cells in the pancreas are most likely damaged in this person?
a. Beta
b. Alpha
c. C peptide
d. Delta
A
a. Beta
Beta cells synthesize insulin
13
Q
- A person has hyperglycemia (increased blood glucose). Which of the following is a TRUE statement regarding glucagon?
a. It is produced by beta cells
b. Hyperglycemia will inhibit glucagon release
c. Glucagon decreases blood glucose
d. It inhibits lipolysis
A
b. Hyperglycemia will inhibit glucagon release
14
Q
- Which of the following is NOT an effect of glucocorticoids?
a. Metabolic
b. Hypertensive
c. Anti-inflammatory
d. Growth suppression
A
b. Hypertensive
