A deficiency in vitamin ________ may result in night blindness as well as dry, flaky skin.
A. A
B. B12
C. C
D. D
E. E
Answer: A
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Which of the following is NOT a result of parasympathetic stimulation?
A) elimination of urine B) salivation C) increased peristalsis of the digestive viscera D) dilation of the pupils
In which lobe of the cerebrum does the angular gyrus lie?
What will be an ideal response?
For a B cell to be activated, it must __________.
a. be bound by a helper T cell at a class II MHC and bind an antigen to a surface antibody b. bind an antigen to a surface antibody c. undergo the process of opsonization d. be bound by a helper T cell at a class II MHC
Select the correct sequence of events that occur during inspiration
A) External intercostals and diaphragm contract, size of thoracic cavity increases, gas pressure in the lungs decreases, air flows in. B) Internal intercostals and diaphragm contract, size of thoracic cavity increases, gas pressure in the lungs decreases, air flows in. C) External intercostals and diaphragm contract, size of thoracic cavity increases, gas pressure in the lungs increases, air flows in. D) Internal intercostals and diaphragm contract, gas pressure in the lungs decreases, size of thoracic cavity increases, air flows in.