Anatomy test 3 Flashcards

1
Q

the central nervous system consists of the

A

brain and spinal cord

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2
Q

“fight or flight” situations are dominated by the

A

sympathetic NS

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3
Q

the supporting and the connecting cell of the nervous systems are

A

neuroglial cells

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4
Q

the small space between the neurons is called the

A

synaptic cleft

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5
Q

the protective coverings of the brain and spinal cord are

A

meninges

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6
Q

the substances released as axonal endings to propagate a nervous impulse is called the

A

neurotransmitter

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7
Q

the autonomic NS is divided into the

A

sympathetic and parasympathetic

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8
Q

synaptic vesicles store

A

neurotransmitters

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9
Q

the numbers of pairs of spinal nerves are

A

31

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10
Q

neurons that have one main dendrite and one axon are called

A

bipolar

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11
Q

gaps in the myelin sheath in the PNS are called

A

nodes of Ranvier

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12
Q

the function of Schwann cells is to

A

produce myelin

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13
Q

the branch of a neuron that carries a nerve impulse away from the cell body is the

A

axon

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14
Q

ion channels open and close due to the presence of

A

gates

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15
Q

afferent fibers conduct nerve impulses from

A

peripheral receptors

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16
Q

the spinal cord is continuous with the

A

brain

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17
Q

autonomic visceral reflexes involve

A

heart rate, BP

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18
Q

fine control of body coordination and balance is a function of the

A

cerebellum

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19
Q

the brainstem is made up of the

A
  1. midbrain
  2. pons
  3. medulla oblongata
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20
Q

cerebrospinal fluid NEVER has

A

blood/red blood cells

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21
Q

damage to the cerebellum would result in

A

loss of motor skills

weak muscles, slurred speech

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22
Q

the reticular activating system functions to

A

control wakefulness

when you sleep and wake up when you hear the baby cry or a burglar

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23
Q

the hypothalamus controls

A
  1. heart rate
  2. BP
  3. temperature
  4. weight
  5. hunger
  6. reproduction
  7. sleep
  8. growth
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24
Q

the cerebral hemispheres are connected internally by the

A

corpus collosum

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25
Q

damage to the cribriform plate of the ethmoidbone owuld most likely result in the loss of

A

smell

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26
Q

midbrain

A
  1. auditory

2. visual reflexes

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27
Q

limbic system

A

emotions & expression

28
Q

hypothalamus

A

maintains homeostasis of the body

29
Q

thalamus

A

directs sensory info

30
Q

diecephalon

A
  1. thalamus
  2. hypothalamus
  3. pituitary glands
31
Q

conscious awareness of external or internal stimuli defines the

A

sensory NS

32
Q

white matter of the NS is composed of

A

mylinated neurons

33
Q

type A neuron

A
  1. the motor neuron
  2. mylin covering
  3. very fats
34
Q

a ganglion contains

A

cell bodies

35
Q

the thalamus, hypothalamus, and the pituitary glad are located in the

A

diencephalon

36
Q

endorphins and enkephalins are neuropeptides that

A

reduce pain

37
Q

a typical pain neurotransmitter is

A

fast/rapid

substance P

38
Q

the cuada equina is

A

bundle of spinal nerves

39
Q

cerebrospinal fluid normally circulates in the

A

central canal

40
Q

in the adult, the spinal cord extends from the medulla to the

A

2nd lumbar vertebrae

41
Q

an afferent neuron is a

A

sensory neuron

usually unipolar

42
Q

the diameter of a spinal cord is slightly larger in the

A

cervical and lumbar enlargement

43
Q

the innermost layer of the meninges

A

pia mater

44
Q

the contralateral reflex that helps you to keep your balance when the flexor reflex is initiated is the

A

withdrawal reflex

*day of test

45
Q

a spinal nerve is covered from the inside out with

A
  1. myelin
  2. endoneurium
  3. perineurium
  4. epineurium
46
Q

the function of the choroid plexus

A

produces cerebrospinal fluid

47
Q

the function of the arachnoid villi is to

A

absorb cerebrospinal fluid

48
Q

between the foramen magnum and the pons is the

A

medulla oblongata

49
Q

during the depolarization phase of an action potential, what is the primary activity

A

sodium rushes in

50
Q

during the depolarization phase of the action potential, what situations exist

A

the cell becomes more positive

51
Q

during the REpolarization phase of the action potential, which situations exist

A
  1. potassium rushes out

2. cell becomes more negative

52
Q

the safety center is located in the

A

hypothalamus

53
Q

spinal nerves are considered mixed, meaning

A

they contain both sensory and motor neurons

54
Q

1 Olfactory

A

sensory

S: impulses associated with smell

55
Q

2 Optic

A

sensory

S: impulses associated with vision

56
Q

3 Oculomotor

A

primarily motor

M: raise eyelids, move eyes, adjust amount of light in eye, focus lenses

57
Q

4 Trochlear

A

primarily motor

M: impulses that move the eyes

58
Q

5 Trigeminal

  1. Opthalmic division
  2. Maxillary division
  3. Mandibular division
A

mixed

  1. S: tear glands, scalp, forehead, upper eyelids
  2. S: upper teeth, upper gum, upper lip, lining of palate, skin of face
  3. S: skin of jaw, lower teeth, lower gum
    M: chewing muscles
59
Q

6 Abducens

A

primarily motor

move eyes

60
Q

7 Facial

A

mixed

S: taste of tongue
M: facial expression, tear glands, salivary glands

61
Q

8 Vestibulocochlear

  1. Vestibular branch
  2. Cochlear branch
A

sensory

  1. equilibrium
  2. hearing
62
Q

9 Glossopharyngeal

A

mixed

S: impulses from the pharynx, tonsils, tongue, carotid arteries
M: swallowing, salivary glands

63
Q

10 Vagus

A

mixed

Somatic motor: speech, swallowing, impulses to heart, smooth muscles, glands in thorax & abdomen
S: impulses from pharynx, larynx, esophagus, viscera of thorax and abdomen

64
Q

11 Accessory

  1. Cranial branch
  2. Spinal branch
A

primarily motor

  1. muscles of soft palate, pharynx, larynx
  2. muscles of neck and back
65
Q

12 Hypoglossal

A

primarily motor

muscles that move the tongue