Course

Introductory Biology

Study Pack

Set 27 Communication And Control 1 The Nervous System

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Question 1

(Multiple Choice)

Free
An organ or group of cells that responds to a motor neuron is a/an:

A) effector.
B) receptor.
C) glial cell.
D) sensory organ.

Answer

Question 2

(Multiple Choice)

Free
A section of a neuron's membrane becomes temporarily positive on the inside when:

A) ion channels open and sodium ions rush in.
B) ion channels open and potassium ions rush in.
C) negatively charged proteins exit the cell.
D) neurotransmitters enter the cell.

Answer

Question 3

(Multiple Choice)

Free
In a reflex such as the "knee jerk" or patellar reflex, the efferent signal travels through the:

A) spinal cord.
B) motor neuron.
C) sensory neuron.
D) interneuron.

Answer