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A&P LAB > Vision: eye lab > Flashcards

Vision: eye lab Flashcards

1
Q

cone-shaped termination of the spinal cord

A

conus medullaris

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2
Q

what is the ending of the subarachnoid space

A

blind sac filled with cerebral spinal fluid

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3
Q

thin strand of pia mater that extends from the conus medullaris to the coccyx

A

filum terminale

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4
Q

sensory cutaneous regions intervated by a single pair of spinal nerves

A

dermatomes

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5
Q

how we tested normal function of spinal nerve

A

tuning fork and areas of dermatomes
vibration = good

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6
Q

describe the arrangement of the dura mater in the brain and spinal cord

A

BRAIN
2 layers
-outer periosteal layer- connects to skull
-meningeal layer

SPINAL CORD
one layer - not attached to vertebrae
-epidural space - adipose tissue for cushion

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7
Q

what is the ventral root associated with

A

motor

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8
Q

list from highest sensory density to lowest

A

fingertip
face
arm
leg

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9
Q
A
  1. white matter
  2. gray matter
  3. dorsal root
  4. dorsal root ganglion
  5. spinal nerve
  6. dorsal ramus
  7. ventral ramus
  8. white and gray rami communications
  9. ventral root
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10
Q

what did touching nose with eyes open and closed and touching fingers with arms extended out assess

A

coordination

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11
Q

what did putting your right leg on your left shin and sliding it down to the floor and doing a figure 8 pattern assess

A

coordinated movement and balance

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12
Q

biceps reflex test

A

tests function of C5 and C6 levels of spinal cord

normal response:
contraction of biceps brachii
flexion of forearm

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13
Q

triceps reflex test

A

tests function of C7 and C8 levels of spinal cord

normal response:
contraction of triceps brachii muscle
extension of forearm

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14
Q

what do stretch reflexes reduce the risk of

A

muscle damage from overextension

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15
Q

patellar reflex test

A

tests function of L2, L3, and L4 levels of spinal cord

normal response:
contraction of quadriceps femoris muscle
extension of leg

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16
Q

ankle jerk (achilles) reflex test

A

tests function of S1 and S2 levels of spinal cord

normal response:
contraction of gastrocnemius and soleus muscle
plantar flexion

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17
Q

what is the plantar reflex test also known as

A

negative babinski reflex

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18
Q

babinski test

A

S1 and S2

to a lesser degree
L4 and L5

normal response:
plantar flexion of foot

not normal:
extension of great toe / spreading or abduction of other toes

19
Q

what reflex test do babies show badly..why

A

babinski / plantar reflex test

nerve fibers are not completely myelinated

20
Q

what does a positive babinski test mean for a child or adult

A

damage to descending (motor) tracts in spinal cord

21
Q

What is the primary motor area also called

A

precentral gyrus

22
Q

where is the primary motor area located

A

frontal lobe anterior to central sulcus

23
Q

function of the primary motor area

A

initiate all voluntary motor functions

24
Q

body regions map to correlate cortical region with part of body it controls

A

motor homunculus

25
Q

what informs brain to sense movement, action, and location

A

proprioception

26
Q

transverse myelitis caused inflammation of spinal cord…how does this effect stretch reflex tests

A

increased reflexes
spasticity
babinski signs
spinal shock

27
Q

what structure contracts as a result of a stimulus

A

a

28
Q

what structure is located in the CNS, receives sensory impulses and sends out motor impulses

A

c

29
Q

what structure delivers nerve impulses to an effector organ

A

d

30
Q

what structure responds to a stimulus

A

e

31
Q

what structure delivers nerve impulses to the CNS

A

b

32
Q

hyperopia

A

shorter eye shape

focused behind retina

fixed by convex lens (+)

33
Q

myopia

A

long, oval eye shape

focus in front of retina

fixed by concave lens (-)

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44
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A&P LAB (9 decks)

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