PHYSIOLOGY II TEST BANK 2026
TESTED QUESTIONS WITH CORRECT
ANSWERS
◉ Hormone. Answer: Chemical messengers, mostly those manufactured
by the endocrine glands, that are produced in one tissue and affect
another
◉ Hormone classification. Answer: Peptides (insulin glycagon), steroids
(corticoids, testosterone, estrogen), and amino acid derivatives (thyroid
hormones)
◉ endocrine signaling. Answer: secreted molecules diffuse into the
bloodstream and trigger responses in target cells anywhere in the body
◉ hydrophilic hormones. Answer: -Water soluble hormones
-Cannot cross the membrane
-Rely on membrane receptor activation
-Membrane proteins produce second messengers
◉ hydrophobic hormones. Answer: -penetrate plasma membrane and
enter nucleus
-act directly on the genes changing target cell physiology
-estrogen, progesterone, thyroid hormone act on nuclear receptors
, -take several hours to days to show effect due to lag for protein synthesis
◉ secondary messengers. Answer: Messengers that relay signal
information from the receptor-ligand complex to the interior of the cell.
◉ To regulate the posterior pituitary, the hypothalamus releases this.
Answer: Anti-diuretic hormone (ADH) and oxytocin
◉ Growth hormone. Answer: hormone secreted by anterior pituitary
gland that stimulates growth of bones
◉ Adrenocorticotropic hormone (ACTH). Answer: Stimulates adrenal
cortex to secrete glucocorticoids
◉ Thyroid Stimulating Hormone (TSH). Answer: stimulates secretion
from thyroid gland
◉ Prolactin. Answer: stimulates milk production in mammary glands
◉ antidiuretic hormone (ADH). Answer: Hormone produced by the
neurosecretory cells in the hypothalamus that stimulates water
reabsorption from kidney tubule cells into the blood and
vasoconstriction of arterioles.