3/. The hypothalam0-hypophyseal portal system a. Allows hypothalamic releasing hormone to directly stimulate the anterior pituitary without entering the systemic circulation b. Provides...

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Biology

3/.Thehypothalam0-hypophyseal portal system
a.Allows hypothalamicreleasing hormone to directly stimulate the anterior pituitarywithout entering the systemic circulation
b.Provides a directlyblood supply between the hypothalamus and posterior pituitarygland
c.Allows for negativepituitary feedback regulation between the posterior and anteriorpituitary
d.None ofabove
4/An example of ashort-loop negative feedback is:
a.Cortisolinhibition of ACTHrelease
b.IGF inhibition ofGHRH release
c.TSH inhibition ofTRH release
d.Increased bloodglucose inhibition of insulin release
5/The structure ofthe thyroid gland is unique for an endocrine gland thatit:
a.Produces threehormones
b.Stores its hormonesas extrscellularcolloid
c.It does notparticipate in negative feedback regulation with thehypothalamus
d.Is actually anexocrine gland
6/Calcitonin, a hormone produced by C-cells(parafollicular)of the thyroid gland causes:
a.Decrease urinaryexcretion of calcium
b.Glucoseuptake
c.Increased calciumabsorption from the intestine
d.Increased calciumtransport from blood to bone
7Cortisol, which is secreted during thestress response, cause the following effects:
a.Fat catabolism(lipolysis) occurs in adiposetissue
b.Protein catabolismoccurs in muscle
c.Theimmusesystem issuppressed
d.All of the aboveare true

Answer & Explanation Solved by verified expert

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Hi Answer 3The hypothalam0hypophyseal portal system Answer Option A B a Allows hypothalamic releasing hormone to directly stimulate the anterior pituitary without entering the systemic circulation b Provides a directly blood supply between the hypothalamus and posterior pituitary gland Explanation It is a complex system of blood vessels in the microcirculation at the base of the brain which connects the hypothalamus with the anterior pituitary Its main function is to quickly transport and exchange of hormones between the hypothalamus and anterior pituitary See Answer

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