What occurs when gamma motor neurons to a muscle are activated?
A. The muscle lengthens.
B. The muscle spindle goes slack.
C. Action potential firing increases in afferent neurons from the muscle spindles.
D. The contractile ends of intrafusal fibers elongate.
E. Extrafusal muscle fibers within that muscle are inhibited from contracting.
Answer: C
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Arnold enters a darkened movie theater on a sunny summer afternoon. It takes many minutes for his eyes to adapt to the darkness because
A. the rods in the eye work only in bright light, and it takes time for the cones to work in weak light. B. the iris takes time to close after being subjected to bright light. C. it takes some time for the retina to rebuild its rhodopsin stores from opsin and retinal. D. the optic nerve fatigues in bright light, and it takes time to recover.
The loose connective tissue component of a mucous membrane is called the
A) lamina densa. B) basal lamina. C) areolar lamina. D) lamina propria. E) mucina lamina.
Anaerobic exercise is endurance-type exercise
Indicate whether the statement is true or false
Fatty acids are catabolized in a process called
A. glycolysis. B. lipogenesis. C. beta oxidation. D. gluconeogenesis. E. ketogenesis.