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Anaphy Lab > Nervous System > Flashcards

Nervous System Flashcards

1
Q

Quadriceps are also?

A

Knee extensions

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2
Q

change in cell structure and function

from generalized to specialized.

A

Differentiation

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3
Q

changes an organism

undergoes through time

A

Development

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4
Q

n increase in size of all or part of the

organism.

A

Growth

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5
Q

consists of the brain and spinal

cord

A

CNS

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6
Q

consists of all

the nervous tissue outside the CNS

A

PNS

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7
Q

T or F

Sensory -> PNS -> Motor-> CNS

A

F

Sensory -> CNS-> motor ->

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8
Q

T or F

motor division is divided into somatic and autonomic systems.

A

T

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9
Q

innervates cardiac muscle, smooth muscle, and glands and is

mostly under involuntary control.

A

Autonomic NS

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10
Q

innervates skeletal muscle and is

mostly under voluntary control.

A

Somatic NS

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11
Q

T or F
autonomic nervous system is divided into sympathetic and
parasympathetic divisions

A

T

Sympathetic-fight or flight
Parasympathetic- rest or digesting

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12
Q

contains both sensory and motor

neurons, which can function independently of the CNS.

A

ENS

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13
Q

What are the glial cells?

A

astrocytes, ependymal cells, microglia, oligodendrocytes, and Schwann cells.

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14
Q

T or F

Neurons are multipolar, bipolar, or unipolar

A

T

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15
Q

the support cells of the nervous system.

A

Glial Cells

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16
Q

receive stimuli and conduct action potentials.

A

Neurons

consists of: Cell body, Dendrites and Axon

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17
Q

Axons are either unmyelinated or myelinated

A

Myelin Sheaths

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18
Q

forms the cortex and nuclei in the brain and ganglia in the PNS.

A

Gray Matter

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19
Q

forms nerve tracts in the CNS and nerves in the PNS.

A

White Matter

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20
Q

results from the charge difference

across the membrane of cells.

A

Resting Membrane Potential

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21
Q

T or F
resting membrane potential is set by leak ion channels and
the sodium-potassium pump.

A

T

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22
Q

occurs when the charge across the cell

membrane is briefly reversed

A

Action Potential

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23
Q

Chemically gated and ________________ion channels generate the
action potential.

A

Voltage Gated

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24
Q

the functional units of the nervous system.

A

Reflex Arcs

25
Q

T or F
A simplest reflex arc consists of a sensory receptor, a sensory
neuron, interneurons, a motor neuron, and an effector organ;

the complex reflex arcs do not involve interneurons.

A

F
Complex yung may INTERNEURONS

Simplest NO INTERNEURON

26
Q

consists of

nerves and ganglia outside the CNS.

A

PNS

27
Q

brain and spinal cord

A

CNS

28
Q

has a central gray part organized into horns and a

peripheral white part forming nerve tracts

A

Spinal Cord

29
Q

The knee-jerk reflex occurs when the___________

A

quadriceps femoris muscle

is stretched.

30
Q

T or F

withdrawal reflex don’t removes a body part from a painful stimulus.

A

F

it removes the body part

31
Q

the most

important branch of the cervical plexus.

A

phrenic nerve

32
Q

plexus supplies nerves to the upper limb.

A

Brachial plexus

33
Q

supplies nerves to the lower limb

A

lumbosacral plexus

34
Q

functions include involuntary and voluntary

movements

A

Somatic Motor

35
Q

has sympathetic and

parasympathetic divisions

A

autonomic nervous system

36
Q

Preganglionic cell bodies of the _______________lie in the

thoracic and upper lumbar regions of the spinal cord.

A

Symphathetic NS

37
Q

three types of neurons

A

Multipolar
Bipolar
Unipolar

38
Q

three parts of a neuron.

A

Cell body, Dendrites, Axon

39
Q

Main Components of NS

A

Central NS

Peripheral NS

40
Q

destroy both microbes and cellular debris.

A

Microglia

is a Phagocytes

41
Q

different

glial cells.

A

Astrocytes, Ependymal, Microglia, Shwann Cells, and Oligodendrites

42
Q

messenger at the synapse

A

neurotransmitters

43
Q

two or more neurons synapse with the same postsynaptic

neuron

A

converging

pathway

44
Q

the axon from one neuron divides and synapses

with more than one other postsynaptic neuron

A

diverging pathway

45
Q

e simplest reflex is the

A

stretch reflex

46
Q

AKA patellar reflex

A

knee-jerk reflex

47
Q

A reflex arc generally has five basic components:

A

(1)sensory receptor;
(2) sensory neuron;
(3) in some
reflexes, interneurons,
(4) motor neuron
(5) effector organ

48
Q

AKA nerve cells

receive stimuli, conduct action potentials, and transmit signals to other neurons
or effector organs.

A

Neurons

49
Q

the nerves to

the diaphragm.

A

phrenic nerves

50
Q

T or F

The left phrenic nerve would be cut to paralyze the left side of the diaphragm.

A

T

51
Q

basic functional unit of the NS

smallest pathway capable of receiving stimulus yielding response

A

Reflex arc

52
Q

basic anatomic unit

A

neurons

53
Q

neurons located between 2 communicating neurons

connect spinal motor to sensory neurons

A

interneurons

translate signals into stimulus

54
Q

ionic basis of RMP

Na+ is more concentrated inside
T or F?

A

F- outside yung Na+

inside is K+

55
Q

rapid changes in the membrane potential that spreads rapidly along the fiber membrane

A

AP

56
Q

its function is to send impulse from one cell to another

A

nerve excitation or nerve impulses

57
Q

5 stages of AP

A

resting potential, threshold, rising phase, falling phase, recovery

58
Q

released in DESCENDING PATHWAY

inhibitory

A

endorphins

Anaphy Lab (11 decks)

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