Chapter 9 Review

Question 0

Astrocytes provide a protection of the brain called ______

Answer 0

Blood-brain barrier

Question 1

At a synapse, the neuron that is sending the action potential is ______

Answer 1

Presynaptic

Question 2

This lines the cavities of the brain in the CNS

Answer 2

Ependymal

Question 3

Produces the myelin in the CNS

Answer 3

Oligo dendrocytes

Question 4

Supports neurons in the ganglia

Answer 4

Satellite

Question 5

Star shaped and supports neurons in the CNS

Answer 5

Astrocytes

Question 6

Smallest size of the neuroglia

Answer 6

Microglia

Question 7

Forms neurolemma and myelin in PNS

Answer 7

Schwann

Question 8

The 3 functions of the nervous system are

Answer 8

Sensory, integration And motion

Question 9

The synaptic cleft is the space that a _____

crosses to initiate a response in a post synaptic neuron

Answer 9

Neurotransmitter

Question 10

What’s is the difference between a nerve and a tract?

Answer 10

Nerve-PNS
Tract- CNS
(Bundles of myelinated fibers)

Question 11

The insulating material of a neuron in the PNS is ______

Answer 11

Myeline

Question 12

Name 2 characteristics that would increase the speed of nerve transmission

Answer 12

1. Warmer temp
2. Larger diameter
3. Has myelin

Question 13

The body’s natural painkiller is _____

Answer 13

Endorphin

Question 14

A neurotransmitter that helps regulate moods is

Answer 14

Seritonion

Question 15

The “fight or flight” nervous system is _____

Answer 15

Sympathetic

Question 16

Describe the arrangement if the gray a white matter in the spinal cord

Answer 16

Gray-inside-unmyelinated

White-outside- myelinated

Question 17

Highly branched; input part of the neuron

Answer 17

Dendrite

Question 18

Unmyelinated gap in the myelin sheath

Answer 18

Node of ravier

Question 19

Bundle of many axons in the CNS

Answer 19

Tract

Question 20

Neuron that conveys info from a receptor to the CNS

Answer 20

Sensory(afferent)

Question 21

Group of cell bodies in the CNS

Answer 21

Nucleus

Question 22

Neuron that conveys info from the CNS to an effector

Answer 22

Motor neuron (efferent)

Question 23

Produces myelin sheath in PNS

Answer 23

Shwann cells

Question 24

Group of cell bodies in PNS

Answer 24

Ganglia

Question 25

Long, cylindrical process that conducts impulses toward another neuron

Answer 25

Axon

Question 26

The portion of the neuron containing the nucleus

Answer 26

Cell body

Question 27

Sac in which the neurotransmitter is stored

Answer 27

Synaptic vesicle

Question 28

Neuron located entirely within the CNS

Answer 28

Interneuron

Question 29

Substance used for communication at chemical synapses

Answer 29

Neurotransmitter

Question 30

Bundle of axons in the PNS

Answer 30

Nerve

Question 31

Rounded structure s the distal end of an axon terminal

Answer 31

Synaptic end bulb

Question 32

This type of neuron take impulses to muscles

Answer 32

Motor (efferent)

Question 33

An axon carries an impulse _____ from a cell body

Answer 33

Away

Question 34

A neurotransmitter must cross the ______ to initiate an impulse in a postsynaptic neuron

Answer 34

Synaptic cleft

Question 35

A motor neuron is an example of a ____ nerve

Answer 35

Efferent

Question 36

A myelinated neuron appears what color?

Answer 36

White

Question 37

MS is more common in

Answer 37

Women

Question 38

Membrane where inner an outer surfaces have equal amounts of electrical charge

Answer 38

Depolarized

Question 39

Membrane where an inner and outer surfaces have unequal amounts of electrical charge

Answer 39

Polarized

Question 40

Time during which a neuron can't be stimulated to initiate an impulse

Answer 40

Refractory period

Question 41

Ions found in high concentration inside the plasma membrane

Answer 41

k+ (potassium)

Question 42

Ions found in high concentration outside the plasma membrane

Answer 42

Na+ (sodium)

Question 43

The difference in electrical charges between the inside an outside of a plasma membrane

Answer 43

Resting potential (-70mV)

Question 44

The mechanism by which ions are moved through the plasma membrane from a lesser to greater concentration

Answer 44

Sodium pump