Ch 14 Lec 2 - Spinal Cord and Spinal Nerves Flashcards Preview

Anatomy > Ch 14 Lec 2 - Spinal Cord and Spinal Nerves > Flashcards

Flashcards in Ch 14 Lec 2 - Spinal Cord and Spinal Nerves Deck (50):
1

these braid off ventral rami

nerve plexuses

2

regions where nerve plexuses are found

cervical, lumbar, sacral

3

most blank nerves are all isolated

thoracic

4

the cervical plexus goes through blank and blank and part of blank

c1-c4, c5

5

cervical plexus is not the only blank that goes through the cervical blank

plexus, vertebrae

6

plexus that innervates certain muscles of neck and torso

cervical plexus

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nerve of cervical plexus that goes to the diaphragm

phrenic nerve

8

the phrenic nerve goes through blank blank and blank

c3, c4, c5

9

other plexus that comes off the cervical vertebrae

brachial plexus

10

brachial plexus goes through these vertebrae

c4-c8 and t1

11

innervates the chest, upper back, and arm

brachial plexus

12

structure of brachial plexus that goes to anterior muscles of arms and skin of forearm

musculocutaneous

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structure of brachial plexus that goes to muscles of forearm, hands, and skin of hands

ulnar nerve

14

brachial plexus structure that is the same function as the ulnar nerve

medial nerve

15

structure of the brachial plexus that goes to posterior muscles of arms and skin of forearms and hands

radial nerve

16

last thoracic, lumbar, sacral, and coccygeal nerves make up this plexus

lumbosacral plexus

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lumbosacral plexus may be split into blank and blank plexuses

lumbar, sacral

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innnervate the lower limb regions

lumbosacral plexus

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lumbosacral plexus structure that goes to adductors of leg

obturator nerve

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lumbosacral plexus structure that sends motor impulses to leg and thigh and receives sensory from skin of leg and thigh

femoral nerve

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lumbosacral plexus structure that goes to muscles and skin in thighs, legs, and feet

sciatic nerve

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rapid automatic involuntary motor response to stimuli

reflex

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reflexes help preserve blank

homeostasis

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reflexes occur at blank or blank

spinal cord, brain stem

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reflexes do not require blank processing

cerebral

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reflexes can be blank by cerebral control

modified

27

four classifications of reflexes

by development, site of processing, nature of motor response, complexity of circuit

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classification of reflex that is genetic or learned

by development

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this means built in

genetically

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means acquired through repetition and/or experience

learned

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birds have a genetic reflex to be afraid of blank

snakes

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classification of reflexes that are spinal or cranial

site of processing

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classification of reflexes that are somatic or visceral

nature of motor response

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influences the skeletal muscle system

somatic

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influences the involuntary systems such as smooth muscle and glands

visceral

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the production of adrenaline reflex

visceral

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classification of reflex that may be monosynaptic or polysynaptic

complexity of neural circuit

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1 synapse

monosynaptic

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two or more synapses

polysynaptic

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boxing reflexes are blank

polysynaptic

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first step of a reflex arc, the blank is stimulated by a detectable environmental blank

receptor, stimulus

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second step of reflex arc, the blank stimulates a blank neuron that sends a signal to the blank for processing

Receptor, sensory, CNS

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in step three of the reflex arc, the blank from sensory neuron to another neuron

transmission

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in the fourth and fifth steps of a reflex arc, a blank is stimulated and sends a signal to a blank

motor neuron, effector

45

a reflex stimulated by the stretching of a muscle

stretch reflex

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blank are receptors that detect stretching

muscle spindle fibers

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the effector is the blank of the muscle in a stretch reflex

contraction

48

the blank reflex is a stretch reflex

patellar

49

the function of the patellar reflex is to prevent muscles from being blank and prevent one from falling blank

overstretched, forward

50

a patellar reflex falls into what classifications

innate, somatic, monosynaptic, spinal