Which part of a neuron will have the highest density of voltage-gated Na+ channels?
a. the dendrites
b. the cell body
c. the axon hillock
d. the axon
e. the axon terminal.
C
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Intracellular fluid contains an abundance of
A) chloride and potassium. B) potassium and phosphate. C) sodium and phosphate. D) potassium and sulfate. E) magnesium and bicarbonate.
Describe the defecation reflex. Include the following in your answer : rectum, external anal sphincter, mass movement, and internal anal sphincter
What will be an ideal response?
Cephalic means
A. toward the middle or midline of the body. B. away from the surface. C. closer to the head. D. closer than another structure to the point of attachment to the trunk. E. toward the back of the body.
Angiotensin II
A. is a potent vasodilator. B. stimulates aldosterone secretion. C. is formed from angiotensin I by the action of renin. D. acts on the collecting ducts to increase reabsorption of water. E. decreases blood pressure.