Biological Bases of Behavior

Question 1

Define Biological Psychology

Answer 1

The scientific study of the links between biological and psychological processes.

Question 2

Define Neuron

Answer 2

Nerve cells.

Question 3

Define Dendrites

Answer 3

Branches of the neuron that receive messages and direct them toward the cell body.

Question 4

Define Axon

Answer 4

Neuron extension that passes messages through its branches.

Question 5

Define Myelin Sheath

Answer 5

A layer of fatty tissues that insulates axons on some neurons and speeds their impulses. If the myelin sheaths degenerates, multiple sclerosis results.

Question 6

Define Action Potential

Answer 6

The electrical charge that travels down an axon.

Question 7

Define Refractory Period

Answer 7

The recharge period after the neuron has fired.

Question 8

Define Threshold

Answer 8

The level of neural stimulation required to trigger an impulse.

Question 9

Define All-Or-None Response

Answer 9

Neurons either fire or they don’t.

Question 10

Define Synapse

Answer 10

The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron.

Question 11

Define Neurotransmitters

Answer 11

Chemical messengers that cross the synaptic gaps between neurons.