Two regions of the hypothalamus that are associated with the posterior pituitary are the
A. primary plexus and pars distalis.
B. paraventricular nucleus and supraoptic nucleus.
C. supraoptic nucleus and pars distalis.
D. primary plexus and paraventricular nucleus.
E. pars tuberalis and pars intermedia.
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Question 2) In which order would blood flow through these structures as it travels from the hypothalamus to the pituitary gland?
a: Primary plexus
b: Secondary plexus
c: Hypophyseal portal veins
A. a - b - c
B. a - c - b
C. c - a - b
D. b - a - c
E. c - b - a
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Question 3) Within the infundibulum, the axons from neurons extending into the posterior pituitary are known as the
A. hypothalamo-hypophyseal tract.
B. primary plexus.
C. secondary plexus.
D. supraoptic portal system.
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Question 4) The hormone oxytocin is synthesized in the
A. anterior pituitary.
B. posterior pituitary.
C. paraventricular nucleus.
D. pineal gland.
E. nucleus of the solitary tract.
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Question 5) The pituitary gland is located _________ to the hypothalamus and is connected by the ________.
A. superior, thalamus
B. inferior, infundibulum
C. inferior, epithalamus
D. posterior, infundibulum
E. superior, pars nervosa and primary plexus
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Question 6) As someone starts to develop in puberty, most cells in their reproductive organs are probably starting to express
A. more receptors for sex hormones.
B. fewer receptors for sex hormones.
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Question 7) Once a structure is fully grown and mature, it will probably
A.
up-regulate its receptors for growth hormone, as it no longer receives as much of the ligand.
B.
up-regulate its receptors for growth hormone, as it no longer needs to continue to grow at a fast rate.
C.
down-regulate its receptors for growth hormone, as it no longer receives as much of the ligand.
D.
down-regulate its receptors for growth hormone, as it no longer needs to continue to grow at a fast rate.
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Question 8) The part of the brain that functions as a master control center of the endocrine system is the
A. pineal gland.
B. cerebral cortex.
C. spinal cord.
D. hypothalamus.
E. adrenal cortex.
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Question 9) When the activity of one hormone requires that of a second hormone, the interaction is said to be _________.
Fill in the blank with correct word.
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Question 10) When the effects of one hormone reinforce the activity of another hormone on the same target cell, the interaction is said to be
A. agonistic.
B. antagonistic.
C. synergistic.
D. permissive.
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