Psych Ch. 3 Test

Front 1

the system that relays messages in form of electrochemical impulses throughout the body is called ______.

Back 1

the nervous system

Front 2

the system which consists of a number of glands which secrete chemicals into the bloodstream is called ___.

Back 2

the endocrine system

Front 3

what transmits electrical information, transmits chemical information, and communicates through neurotransmitters

Back 3

a neuron

Front 4

the short fibers which extend from the neuron allowing it to receive messages from other neurons are ______.

Back 4

dendrites

Front 5

neurons that have a myelin sheath are

Back 5

interneurons

Front 6

if the dendrite is the "input" structure of the neuron, the output strugture is the

Back 6

axon

Front 7

for a period of .001 second after firing, a neuron cannot fire again. this period is called the

Back 7

absolute refractory period

Front 8

the period in which the neuron begins to pump sodium ions out of the cell and can only fire if the incoming message is extremely powerful is called the

Back 8

relative refractory period

Front 9

which of the following perform most of the work of the nervous system

Back 9

interneurons

Front 10

the neurotrasmitter that excites other neurons

Back 10

acetylcholine

Front 11

a schizophreic is mostly likely to have a problem with which of the neurotransmitters?

Back 11

serotonin

Front 12

what would most likely happen if something prevented the release of acetylcholine

Back 12

paralysis

Front 13

a person, after drinking several cups of strong coffee, develops coffee nerves, or jitters. this probably is due to

Back 13

the ability of caffeine to inhibit enzymes which break down excitory neurotransmistters

Front 14

Despite its dangers, a young man continues to take cocaine ebcause of the feelings of euphoria it produces for him. this powerful arousal of his nervous system is probably due to cocaine's ability to ____

Back 14

prevent neurotransmitters from being reabsorbed into the synaptic vesicles

Front 15

the cerebellum does what?

Back 15

corrdinates actions so that movements are efficient

Front 16

the hippocampus is involved with

Back 16

putting memories into permanent storage

Front 17

What part of the brain allows humans to use language?

Back 17

forebrain

Front 18

The part of the brain which interprets visual information is the ___

Back 18

occipital lobe

Front 19

the structure that connects the two hemispheres of the cerebal cortex is the ___

Back 19

corpus callosum

Front 20

the part of the brain that receives sensations of touch, balance, and bodily position is the ____

Back 20

parietal lobe

Front 21

the peripheral nervous system consists of the ____ and the ____ nervous system

Back 21

somatic; autonatic

Front 22

the autonomic nervous system has two divisons:

Back 22

sympathetic and parasympathetic

Front 23

The two hormones which keep the blood-sugar level properly balanced are ____

Back 23

insulin and glucaon

Front 24

What part of the brain cuold be compared to a switchboard receiving calls from all over the country and tehen direcing the paths of these incoming calls?

Back 24

thalamus

Front 25

LSD reduces the activity of ____, causing an increase in neural impulses in the brain that leads to hallucinations.

Back 25

serotonin