A constant blood supply to this organ is a priority of the circulatory system:
a. heart.
b. kidney.
c. brain.
d. muscle.
e. liver.
C
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The internal structure that permits stiffening of the penis consists of three columns of ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following hormones is NOT matched correctly with the cells that secrete it?
A. lactotrophs: prolactin B. somatotrophs: growth hormone C. gonadotrophs: FSH, LH D. thyrotrophs: thyroxine, triiodothyronine E. corticotrophs: ACTH
If neuron X causes hyperpolarization, then what does it cause in a postsynaptic neuron?
a. Increased PNa+ and PK+ b. Increased PK+ or PCl- c. Increased influx of protein anions d. Increased permeability to calcium ions e. Either b or c
The deep groove on the ventral surface that extends the length of the spinal cord is the
A) anterior median fissure. B) central canal. C) central sulcus. D) longitudinal fissure.