When a person rises quickly from a lying position, there is
A. an increase in the frequency of action potentials produced by the baroreceptors.
B. an increase in vasomotor sympathetic stimulation to the blood vessels causing vasoconstriction.
C. reflexive slowing of the heart.
D. an increase of parasympathetic stimulation of the heart.
E. a decrease in heart rate and stroke volume.
B
You might also like to view...
Which statement about secretin is correct?
a. The most potent stimulus for its secretion is the presence of fat in the duodenum. b. It stimulates pancreatic enzyme secretion. c. It stimulates the secretion of bicarbonate. d. It stimulates the pancreatic acinar cells. e. None of the above
What tissue type makes up 50 percent of the total weight of the body?
A. Bone B. Muscle C. Connective tissue D. Epithelium
The ureter expands into the substance of the kidney as the ________.
A. renal corpuscle B. hilum C. renal capsule D. renal pyramid E. renal pelvis
Which directional term indicates the front side of the body?
What will be an ideal response?