Thromboxane is a chemical mediator released by platelets. Thromboxane promotes the aggregation of platelets which results in platelet plug formation during hemostasis. Thromboxane would therefore be classified as a(n)
A.
neurotransmitter.
B.
paracrine chemical messenger.
C.
endorphin;.
D.
enkephalin.
E.
autocrine chemical messenger.
(
Question 2) All of the following are regulatory functions of the endocrine system except
A.
labor contractions.
B.
development of tissues.
C.
immune functions.
D.
metabolic rate.
E.
thermoregulation.
(
Question 3) The endocrine system is a system of ductless glands that secrete their products into the interstitial fluid.
Indicate whether the statement is true or false.
(
Question 4) The posterior pituitary secretes
A.
chiasmatic hormones.
B.
tropic hormones.
C.
transcriptional hormones.
D.
interstitial hormones.
E.
neurohormones.
(
Question 5) All of the following are characteristics of the pituitary gland except
A.
rests in the sphenoid bone.
B.
secretes several major hormones.
C.
influences the secretion of other endocrine glands.
D.
is regulated by the hypothalamus.
E.
located superior to the hypothalamus.
(
Question 6) Glucagon is synthesized by the ________ cells of the pancreas.
Fill in the blank(s) with the appropriate word(s).
(
Question 7) The hypothalamohypophysial portal system extends from the hypothalamus to the ________.
Fill in the blank(s) with the appropriate word(s).
(
Question 8) Another name for the anterior pituitary is the ________.
Fill in the blank(s) with the appropriate word(s).
(
Question 9) The ________ pituitary is a neural extension of the hypothalamus.
Fill in the blank(s) with the appropriate word(s).
(
Question 10) The amount of melatonin secreted by the pineal gland is regulated by
A. the stress response.
B. blood glucose levels.
C. a person's individual metabolic rate.
D. the amount of sleep a person gets.
E. the photoperiod (the daily amount of daylight).
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