Neural Communication

Question 1

Sensory Neurons?

Answer 1

Also known as Afferent which the sensory receptors send information about the environment to the brain and spinal cord.

Question 2

Motor Neurons

Answer 2

Conduct info. from brain and spinal cord to effectors-muscles and organs.

Question 3

Inter Neurons

Answer 3

Serve as intermediaries between sensory and motor neurons.

Question 4

Phrenology

Answer 4

Pseudoscience founded by Franz Gall where he believed bumps on head showed intelligence.

Question 5

Dendrites

Answer 5

Detect signals from axons of other neurons to cell body.

Question 6

Soma(cell body)

Answer 6

nucleus-DNA.

Question 7

Axon

Answer 7

long, thin fiber that transmits info from somas to other neurons, muscles and glands.

Question 8

Myelin Sheath

Answer 8

Increases speed of action potentials as they travel along axon.

Question 9

Nodes of Ranvier

Answer 9

Gaps in myelin sheath.

Question 10

Terminal button, Axon Terminal

Answer 10

chemical messengers in brain.

Question 11

Vesicles

Answer 11

Sacs in terminal button that store neurotransmitters.

Question 12

Synapse

Answer 12

tiny gap between two neurons into which neurotransmitters are released.

Question 13

Acetylcholine

Answer 13

Cause muscle contraction and involved in memory function-Alzheimer’s disease.

Question 14

Dopamine

Answer 14

“Pleasure chemical” released with food, drugs, and sex.

Question 15

Serotonin

Answer 15

Sleep and emotions-depression.

Question 16

Norepinephrine

Answer 16

Learning and memory-anxiety, fear, and depression.

Question 17

Endorphins

Answer 17

Regulates pain perception-Runner’s High

Question 18

Glutamate

Answer 18

Excitatory neurotransmitter involved in learning.

Question 19

GABA

Answer 19

Inhibitory neurotransmitter whose receptors respond to alcohol.

Question 20

Glia

Answer 20

Non-firing support cells that provide structural support and nutrition and remove cell waste.

Question 21

Refractory period

Answer 21

Minimum length of time after action potential during which another action potential can’t begin.

Question 22

What’s the resting membrane potential of a neuron?

Answer 22

-70mV

Question 23

Excitatory and Inhibitory

Answer 23

Increase/decrease likelihood that postsynaptic neuron is going to fire a signal called action potential. GABA and glutamate.