nervous system

Question 1

the brain stem

Answer 1

medulla oblongata

Question 2

the portion of the cerebrum responsible for vision

Answer 2

occipital

Question 3

the portion of the brain responsible for maintaining homeostasis within the body

Answer 3

hypothalamus

Question 4

there are 31 pairs of _____ nerves

Answer 4

spinal

Question 5

a component of the CNS

Answer 5

brain / spinal cord

Question 6

the nodes of _______ are breaks between myelinated sections of the axon

Answer 6

Ranvier

Question 7

after an action potential, sodium and potassium are returned to their resting potential state by the process of _____ (2 words)

Answer 7

Active transport

Question 8

these substances break down neurotransmitters in the synaptic cleft after their release

Answer 8

Enzymes

Question 9

the three protective membranes around the spinal cord

Answer 9

meninges

Question 10

________ neurotransmitters make the post synaptic membrane more permeable to Na+ and therefore more likely to produce an action potential

Answer 10

Excitatory

Question 11

the portion of the brain that receives all information from the senses (exept for smell)

Answer 11

Thalamus

Question 12

a substance which coats the axons of nerve cells

Answer 12

myelin

Question 13

the ventral root conducts nerve impulses ________ from the spinal cord

Answer 13

away

Question 14

a chemical that is released to transmit a nerve impulse from one nerve cell to the next

Answer 14

Neurotransmitter

Question 15

shorter branches of a neuron which receive nerve impulses

Answer 15

Dendrites

Question 16

a horizontal section that connects the right and left hemispheres of the brain

Answer 16

Corpus callosum

Question 17

_______ matter in the spinal cord contains mostly cell bodies

Answer 17

grey

Question 18

the stage of action potential where sodium ions begin to move into the cell

Answer 18

Depolarization

Question 19

neurons carry nerve impulses AWAY from the CNS

Answer 19

Motor / efferent

Question 20

the central part of the neuron, where most activities related to the maintenance of the cell occur

Answer 20

Cell body

Question 21

the sodium / potassium pump requires the energy molecule ________

Answer 21

ATP

Question 22

axon ______ are at the end of an axon

Answer 22

Terminals

Question 23

_______ matter in the spinal cord contains bundles of myelinated axons

Answer 23

white

Question 24

the portion of the cerebrum responsible for thinking

Answer 24

cerebrum

Question 25

the space between the axon ends of one nerve cell and the dendrites of a neighbouring cell

Answer 25

Synapse / synaptic cleft

Question 26

the portion of the cerebrum responsible for understanding speech

Answer 26

Parietal lobe

Question 27

__________ transmission occurs because of the myelinated nature of the axon

Answer 27

Saltatory

Question 28

the coated portions of the axon are called ______ cells

Answer 28

Schwann

Question 29

during resting potential, _______ is the most common ion outside of the cell

Answer 29

Sodium (Na+)

Question 30

_________ transmitters make the post synaptic membrane less permeable to Na+ and therefore less likely to produce an action potential

Answer 30

Inhibitory

Question 31

the name given to the "nerve impulse" that passes along a neuron (2 words)

Answer 31

Action potential

Question 32

the stage of action potential where potassium ions begin to move out of the cell

Answer 32

Repolarization

Question 33

the dorsal root looks different then that ventral root due to the presence of an enlargment called the dorsal root _______

Answer 33

Ganglion

Question 34

another word for "motor" neuron

Answer 34

Efferent

Question 35

another word for "sensory" neuron

Answer 35

Afferent

Question 36

the dorsal root conducts nerve impulses ________ the spinal cord

Answer 36

Toward

Question 37

the portion of the nervous system which produces the "fight or flight' response

Answer 37

Sympathetic

Question 38

the portion of the nervous system which is "involuntary" (not under your conscious control)

Answer 38

Autonomous

Question 39

the void running down the centre of the spinal cord (2 words)

Answer 39

Central canal

Question 40

the part of the brain responsible for conscious thought

Answer 40

Frontal lobe

Question 41

the ______ period occurs when sodium and potassium ions are being returned to their resting potential concentrations

Answer 41

Refractory

Question 42

the ________ nervous system contains all the nerves that effect the skeletal muscles and sensory organs

Answer 42

somatic

Question 43

the "master gland"

Answer 43

Pituitary

Question 44

the voltage inside a neuron at resting potential is approximately _____

Answer 44

-70m V

Question 45

Nerves are bundles of individual cells called ______

Answer 45

Neurons

Question 46

one component of the CNS

Answer 46

Brain / spinal cord

Question 47

the portion of the nervous system which puts you into a more relaxed state

Answer 47

Parasympathetic

Question 48

during resting potential, _______ is the most common ion inside of the cell

Answer 48

Potassium (K+)

Question 49

a neurotransmitter released in response to the parasympathetic nervous system - puts you into a relaxed state

Answer 49

Acetylcholine

Question 50

an involuntary response which bypasses the brain

Answer 50

Reflex

Question 51

the lobe of the cerebrum responsible for hearing and smelling

Answer 51

Temporal lobe

Question 52

a type of neuron found only in the CNS

Answer 52

Interneuron

Question 53

______ contain the neurotransmitters within the axon terminals

Answer 53

Vesicles

Question 54

a neurotransmitter released by the sympathetic nervous system to induce the fight or flight response

Answer 54

noradrenalin

Question 55

the part of the brain responsible for balance

Answer 55

Cerebellum

Question 56

portion of the nervous system that is not the CNS

Answer 56

peripheral