233.
Vitreous humor is
A
Colloid
B
Watery fluid
C
Mucoid connective tissue
D
All of the above
Answer :
All of the above
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234.
Anesthetics reduce pain by blocking the transmission of nerve impulses. The kind of chemicals working as anesthetics are those that block
A
only the voltage-gated sodium channels in membranes
B
only the voltage-gated potassium channels in membranes
C
only the neuro-transmitter receptors
D
voltage-gated sodium and potassium channels and neuro-transmitter receptors
Answer :
voltage-gated sodium and potassium channels and neuro-transmitter receptors
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235.
One of the examples of the action of the autonomous nervous system is
A
swallowing of food
B
pupillary reflex
C
peristalsis of the intestine
D
knee-jerk response
Answer :
peristalsis of the intestine
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