Nervous System

Question 1

____ neurons carry nerve impulses TO the CNS

Answer 1

Sensory

Question 2

Another word for a motor neuron

Answer 2

Efferent neuron

Question 3

The portion of the cerebrum responsible for vision

Answer 3

Occipital lobe

Question 4

The void running down the centre of the spinal cord

Answer 4

Central canal

Question 5

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

Answer 5

Somatic

Question 6

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

Answer 6

Autonomic

Question 7

Shorter branches of a neuron which receive nerve impulses

Answer 7

Dendrites

Question 8

The lobe of the cerebrum responsible for hearing and smelling

Answer 8

Temporal lobe

Question 9

___ matter in the spinal cord contains bundles of myelinated axons

Answer 9

White

Question 10

The portion of the cerebrum responsible for thinking

Answer 10

Frontal lobe

Question 11

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

Answer 11

Cell body

Question 12

The ____ period occurs when sodium and potassium ions are being returned to their resting potential concentrations

Answer 12

Refractory

Question 13

Portion of the nervous system that is not the CNS

Answer 13

PNS

Question 14

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

Answer 14

Corpus callosum

Question 15

During resting potential, ____ is the most common ion inside of the cell

Answer 15

Potassium

Question 16

___ endings are at the end of the axon

Answer 16

Synaptic

Question 17

A long extension of a nerve cell which transmits nerve impulses

Answer 17

Axon

Question 18

The Nodes of ______ are breaks between myelinated sections of the axon

Answer 18

Ranvier

Question 19

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

Answer 19

Depolarization

Question 20

During resting potential, _____ is the most common ion outside of the cell

Answer 20

Sodium

Question 21

The “master gland”

Answer 21

Pituitary gland

Question 22

The coated portions of the axon are called ____ cells

Answer 22

Schwann

Question 23

The portion of the cerebrum responsible for understanding speech

Answer 23

Parietal lobe

Question 24

After an action potential, sodium and potassium are returned to their resting potential state by the process of ________

Answer 24

Active transport

Question 25

A portion of the brain stem

Answer 25

Medulla oblongata

Question 26

A substance which coats the axons of nerve cells

Answer 26

Myelin

Question 27

Synaptic ______ contain the neurotransmitters within the axon ends

Answer 27

Vesicles

Question 28

An involuntary response which bypasses the brain

Answer 28

Reflex

Question 29

The three protective membranes around the spinal cord

Answer 29

Meninges

Question 30

The ventral root conducts nerve impulses _____ from the spinal cord

Answer 30

Away

Question 31

_____ transmission occurs because of the myelinated nature of the axon

Answer 31

Saltatory

Question 32

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

Answer 32

Synapse

Question 33

Spinal ____ is found in the central canal and surrounding the spinal cord

Answer 33

Fluid

Question 34

The part of the brain responsible for conscious thought

Answer 34

Cerebrum

Question 35

____ transmitters make the post synaptic membrane more permeable to sodium and therefore more likely to produce an action potential

Answer 35

Excitatory

Question 36

A type of neuron found only in the CNS

Answer 36

Interneuron

Question 37

There are _______ cranial nerves attached to the brain

Answer 37

12

Question 38

Another word for a sensory neuron

Answer 38

Afferent

Question 39

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

Answer 39

Acetylcholine

Question 40

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

Answer 40

Parasympathetic

Question 41

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

Answer 41

Repolarization

Question 42

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

Answer 42

Noradrenalin

Question 43

A component of the CNS (two words)

Answer 43

Spinal cord

Question 44

There are 31 pairs of _____ nerves

Answer 44

Spinal

Question 45

The name given to the nerve impulse that passes along a neuron

Answer 45

Action potential

Question 46

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

Answer 46

Enzymes

Question 47

The sodium/potassium pump requires the energy molecule _____

Answer 47

ATP

Question 48

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

Answer 48

Neurotransmitter

Question 49

_____ transmitters make the post synaptic membrane less permeable to sodium and therefore less likely to produce an action potential

Answer 49

Inhibitory

Question 50

The portion of the nervous system which produces the fight or flight response

Answer 50

Sympathetic

Question 51

The dorsal root looks different than the ventral root due to the presence of an enlargement called the dorsal root ______

Answer 51

Ganglion

Question 52

_____ matter in the spinal cord contains mostly cell bodies

Answer 52

Grey

Question 53

The part of the brain responsible for balance

Answer 53

Cerebellum

Question 54

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

Answer 54

Hypothalamus

Question 55

The dorsal root conducts nerve impulses _____ the spinal cord

Answer 55

Toward

Question 56

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

Answer 56

Thalamus

Question 57

Nerves are bundles of individual cells called

Answer 57

Neurons

Question 58

One component of the CNS (one word)

Answer 58

Brain

Question 59

____ neurons carry nerve impulses AWAY from the CNS

Answer 59

Motor

Question 60

The voltage inside a neuron at resting potential is approximately ______

Answer 60

-70 mV