Course

General Biology

Study Pack

Set 49 Nervous Systems

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Question 1

(Multiple Choice)

Free
In a cephalized invertebrate,the system that transmits "efferent" impulses from the anterior ganglion to distal segments is the

A)central nervous system.
B)peripheral nervous system.
C)autonomic nervous system.
D)parasympathetic nervous system.
E)sympathetic nervous system.

Answer

Question 2

(Multiple Choice)

Free
Exercise and emergency reactions include

A)increased activity in all parts of the peripheral nervous system.
B)increased activity in the sympathetic, and decreased activity in the parasympathetic, branches.
C)decreased activity in the sympathetic, and increased activity in the parasympathetic, branches.
D)increased activity in the enteric nervous system.
E)reduced heart rate and blood pressure.

Answer

Question 3

(Multiple Choice)

Free
In the human knee-jerk reflex,as the calf is raised from the vertical toward the horizontal,the muscles of the quadriceps (flexors on the ventral side of the thighs)and the muscles of the hamstring (extensors on the dorsal side of the thighs)are

A)both excited and contracting.
B)both inhibited and relaxed.
C)excited and inhibited, respectively.
D)inhibited and excited, respectively.

Answer