AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

THE NERVOUS AND ENDOCRINE SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a neuron, impulses move
A
from dendrite to axon
B
from cell body to dendrite
C
from axon to cell body
D
None of the above
Explanation: 

Detailed explanation-1: -The electrical impulses are received by the dendrites of the neurons. The dendrites transfer these impulses to the cell body from which they emerge. The axon receives the impulses from the cell body and transfers them to the axonal end.

Detailed explanation-2: -A motor neuron sends an impulse to a muscle or gland, and the muscle or gland then reacts in response. Nerve impulses begin in a dendrite, move toward the cell body, and then move down the axon. A nerve impulse travels along the neuron in the form of electrical and chemical signals. The axon tip ends at a synapse.

Detailed explanation-3: -This impulse then travels through the cell body to the axon which transmits it to the next neuron. Therefore, the pathway of a nerve impulse through a neuron is first a dendrite then the cell body and finally the axon. So, the correct answer is option (D), Dendrite → cell body → axon.

Detailed explanation-4: -Within a neuron, the impulse moves to the tip of an axon and causes the release of neurotransmitters, chemicals that act as messengers. Neurotransmitters pass through the synapse, the gap between two nerve cells, and attach to receptors on the receiving cell.

Detailed explanation-5: -Final answer: The electrical impulse travels in a neuron from Dendrite → cell body → axon → axonal end.

There is 1 question to complete.