AP BIOLOGY

ANIMAL PHYSIOLOGY

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which part of a neuron RECIEVES information?
A
axon
B
dendrite
C
cell body
D
axon terminal
Explanation: 

Detailed explanation-1: -Dendrites receive synaptic inputs from axons, with the sum total of dendritic inputs determining whether the neuron will fire an action potential.

Detailed explanation-2: -Dendrites receive input from many other neurons and carry those signals to the cell body. If stimulated enough, a neuron fires an action potential-an electrical impulse that then stimulates other neurons. Large networks of these neurons communicate with each other to generate thoughts and behavior.

Detailed explanation-3: -Dendrites extend out from the cell body and receive messages from other nerve cells. An axon is a long single fiber that transmits messages from the cell body to the dendrites of other neurons or to other body tissues, such as muscles.

Detailed explanation-4: -Synapses: Dendrites receive signals from other neurons at specialized junctions called synapses. There is a small gap between two synapsed neurons, where neurotransmitters are released from one neuron to pass the signal to the next neuron.

Detailed explanation-5: -It is shown that dendrites have extensive connections with the axons in the form of axodendritic synapses, which form an important mode of communication between neurons (see Synapse below and Ch. 6, p. 110). They are the chief sensors of a neuron, in the sense that the dendrites receive the incoming signals first.

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