What disease is caused by the absence of enteric neurons in the distal large intestine?
A. Hirschprung disease
B. multiple endocrine neoplasia type 2
C. spastic colon
D. gastroenteritis
A
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In horses, ________________________________________ is the time in which none of the feet contact the ground
Fill in the blank(s) with correct word
The amount of air that can be expired forcefully above or beyond the normal tidal volume is the
A. tidal volume. B. forced expiratory vital capacity. C. inspiratory reserve volume. D. residual volume. E. expiratory reserve volume.
Why is the rate of CO2 exchange roughly equivalent to that of O2 despite its less steep pressure gradient?
A. CO2 diffuses much more rapidly out of the cells. B. CO2 binds to O2 and moves across the respiratory membrane simultaneously. C. CO2 is more soluble in water than is O2. D. CO2 is actively transported into the alveoli.
After having the flu, a patient starts making anti-flu virus antibodies. This is an example of
A. artificial active immunity. B. natural active immunity. C. artificial passive immunity. D. natural passive immunity.