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Endocrine System
Test Description: Anatomy and Physiology, Endocrine system Hormones
Instructions: Answer all questions to get your test result.
1) Which of the following is least descriptive of the hypothalamus?
A
controls the secretion of the anterior pituitary gland
B
secretes releasing hormones
C
secretes ACTH, TSH, and gonadotropins
D
synthesizes oxytocin and ADH
2) Insulin and glucagon
A
are secreted by the beta cells of the islets of Langerhans.
B
are secreted in response to declining plasma levels of glucose.
C
elevate blood glucose.
D
are secreted by the pancreas and are concerned with the regulation of blood glucose.
3) Steroids
A
are secreted by the adrenal medulla.
B
include the glucocorticoids, mineralocorticoids, and androgens.
C
are secreted by the pancreas.
D
stimulate the membranes of the target cells to produce the second chemical messenger, cAMP.
4) The adrenal medulla
A
secretes steroids.
B
secretes iodine-containing hormones.
C
is controlled primarily by ACTH.
D
is part of the “fight-or-flight” response.
5) Iodine-containing hormones
A
regulate metabolic rate.
B
include thyroid-stimulating hormone (TSH).
C
are secreted by the hypothalamus as releasing hormones.
D
are steroids.
6) Antidiuretic hormone (ADH) and oxytocin
A
are secreted by the islets of Langerhans.
B
are secreted by the neurohypophysis.
C
stimulate the kidney to excrete Na+ and water.
D
are mineralocorticoids.
7) Portal capillaries carry releasing hormones from the brain to the
A
posterior pituitary gland.
B
neurohypophysis.
C
anterior pituitary gland.
D
pancreas
8) Which of the following is the response to low plasma levels of calcium?
A
secretion of the beta cells of the islets of Langerhans
B
secretion of PTH
C
secretion of calcitonin
D
inhibition of the adenohypophyseal release of ACTH
9) What is the stimulus for the release of insulin?
A
high plasma levels of glucose
B
low blood volume
C
low plasma levels of glucose
D
high plasma levels of potassium
10) The adrenal cortex
A
secretes ADH and oxytocin.
B
is an extension of the sympathetic nervous system.
C
is the target gland of ACTH.
D
secretes catecholamines.
*select an answer for all questions
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