One-way valves are found in which blood vessels?
a. capillaries
b. veins
c. arteries
d. arterioles
b. veins
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Which of the following is true about the number of binding sites per functional antibody unit?
A) IgD contains 4 binding sites. B) IgA contains 6 binding sites. C) IgG contains 6 binding sites. D) IgM contains 10 binding sites.
How would a hemorrhage immediately affect the activity of the baroreceptors?
A. The baroreceptors would decrease their rate of firing to all medullary cardiovascular center cell types. B. The baroreceptors would increase their rate of firing to cells in the medulla oblongata that activate sympathetic pathways and decrease their rate of firing to cells in the medulla oblongata that activate parasympathetic pathways. C. A hemorrhage would not affect the activity of the baroreceptors. D. The baroreceptors would decrease their rate of firing to cells in the medulla oblongata that activate sympathetic pathways and increase their rate of firing to cells in the medulla oblongata that activate parasympathetic pathways. E. The baroreceptors would increase their rate of firing to all medullary cardiovascular center cell types.
Arrange the following in order from largest to smallest.(1) Dipeptide(2) Protein(3) Amino acid(4) Polypeptide
A. 1, 2, 3, 4 B. 2, 4, 3, 1 C. 4, 1, 2, 3 D. 2, 4, 1, 3 E. 3, 1, 4, 2
Sensory neurons of the PNS are
A. Multipolar B. Unipolar C. Bipolar D. None of the above