chapter 13 Flashcards

1
Q

mechanoreceptors

A

pressure

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2
Q

thermoreceptors

A

temperature

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3
Q

photoreceptors

A

light

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4
Q

proprioceptors

A

position sensing, stretch

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5
Q

chemoreceptors

A

chemicals in solution

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6
Q

nociceptors

A

pain

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7
Q

nerves

A

bundles of axons in PNS

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8
Q

tracts

A

bundles of axons in CNS

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9
Q

mixed nerves

A

contains axons of motor and sensory neurons

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10
Q

olfactory l

A

sensory- smell

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11
Q

optic ll

A

sensory- vision

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12
Q

oculomotor lll

A

primarily motor- move eyeball, constrict pupil, adjust lense

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13
Q

trochlear lV

A

primarily motor- move eyeball

sensory- proprioceptors

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14
Q

trigeminal V

A

Mixed NErve
sensory- skin/muscle around the eyes, nose, mouth, cheek, tounge
Motor- chewing muscles

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15
Q

Abducens Vl

A

motor- moves the eyeball

sensory- proprioception

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16
Q

Facial Vll

A

Mixed Nerve
motor- facial expression & glans (tear,saliva)
sensory- proprioception and taste

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17
Q

Vestibulocochlear Vlll

A

Primarily sensory- hearing and balance

motor- adjust hair cells

18
Q

Glossopharyngeal lX

A

Mixed nerve
sensory- taste and tongue sensation
motor- swallowing, speech, salivating

19
Q

vagus X

A

Mixed Nerve
Sensory- sensations of the thorax and abdominal organs, pharynx, epiglottis
motor- swallowing, coughing, speech, contraction of GI tract, slowing HR

20
Q

Accessory Xl

A

Primarily motor- swallowing, moving head and shoulders

sensory- proprioception

21
Q

Hypoglossal Xll

A

primarily motor- speech, swallowing

sensory- proprioception

22
Q

spinal nerves (how many are there)

A
8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccyx
23
Q

dermatome

A

an area of the skin the sensory nerve fiber of a particular spinal nerve innervates

24
Q

cervical plexus

A

C1- C4

innervates the skin and muscles of the neck, head, and superior shoulders and chest

25
Q

nerves on the cervical plexus

A

phrenic nerve

innervates diaphragm

26
Q

brachial plexus

A

C5-C8, T1

innervates the skin and muscles of the shoulders, superior thorax and upper limbs

27
Q

nerves on brachial plexus

A
axillary
musculocutaneous
median
radial
ulnar
28
Q

ulnar nerve

A

innervates hand flexors and medial hand

29
Q

median nerve

A

innervates forearm flexors and skin of anterior hand

30
Q

radial nerve

A

innervates the tricep muscle and forearm extensors and skin of posterior hand

31
Q

musculocutaneous nerve

A

innervates biceps, brachialis, and skin of anterior lateral forearm

32
Q

axillary nerve

A

innervates deltoid muscle and shoulder skin

33
Q

Lumbar plexus

A

L1-L4

innervates the skin and muscles of the anterolateral abdomen, external genitals, and part of lower limbbs

34
Q

nerves of lumbar plexus

A

femoral- thigh flexors and leg extensors

saphenous- extends length of leg from femoral to arch of foot to hallux

35
Q

sacral plexus

A

L4-L5, S1-S4

innervates skin and muscles of buttock and lower limbs

36
Q

nerves on sacral plexus

A

sciatic nerve

forms tibial and fibular branches to innervate the thigh, leg, and foot

37
Q

reflex activity

A

rapid, predicatable, involuntary unlearned motor responses to stimuli

38
Q

reflex activity does

A
  • protects body from harm
    -some reflexes coordinated in brain (brain stem) and some in spinal cord
    somatic and autonomic reflexes
39
Q

somatic reflexes

A

involve skeletal muscle contractions- like jerking hand from hot stove

40
Q

autonomic reflexes

A

not aware of- dilation of pupil

41
Q

components of reflex

A
1- receptor (skin)
2- sensory neuron
3- integration center (interneuron)
4- motor neuron
5- effector- muscle