The neurobiologist explained to the students, "The neural system is very much like the wires connecting your T.V. and stereo to the electrical outlet. If the wires were not covered with insulation, the signal would short circuit." The neurobiologist was describing the function of the
A) terminal button.
B) axon.
C) cell body.
D) myelin sheath.

Question

The neurobiologist explained to the students, "The neural system is very much like the wires connecting your T.V. and stereo to the electrical outlet.  If the wires were not covered with insulation, the signal would short circuit." The neurobiologist was describing the function of the
A) terminal button.
B) axon.
C) cell body.
D) myelin sheath.

Quizplus · Accepted Answer

The neurobiologist's analogy of insulation covering wires to prevent short circuits is referring to the myelin sheath. Just like the insulation on wires, the myelin sheath covers the axon of a neuron to prevent the electrical signal from short circuiting.

The Neurobiologist Explained to the Students, "The Neural System Is Very