Aldosterone is produced by the
A. adrenal medulla.
B. adrenal cortex.
C. hypothalamus.
D. posterior pituitary.
Answer: B
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Sandwiched between the layer of circular and longitudinal muscle in the muscularis externa is the
A) mucosa. B) myenteric plexus. C) muscularis mucosa. D) submucosal plexus. E) submucosa.
The membrane-bound "middleman" that acts as an intermediary between the receptor and adenylate cyclase in the cAMP second-messenger system is a(n) ____________________
Fill in the blank(s) with correct word
High levels of estrogen directly stimulate the LH-secreting cells of the anterior pituitary
Indicate whether the statement is true or false
The nerve crucial for breathing that originates within the cervical plexus is called the ________ nerve
A) ansa cervicalis B) great auricular C) transverse cervical D) phrenic E) supraclavicular