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Human Lab > LAb 4 Human Reflexes > Flashcards

LAb 4 Human Reflexes Flashcards

1
Q

Transmits the afferent impulse to cns

A

Sensory neuron

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2
Q

Either monosynaptic or polysnaptic region within cns

A

Integration center

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3
Q

Conducts efferent impulses from the integration center to an effector

A

Motor neuron

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4
Q

Muscle fiber or gland that responds to the efferent impulse

A

Effector

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5
Q

Synapses directly to motor neuron

A

Monosynaptic

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6
Q

Involve at least one interneuron in between sensory and motor neuron

A

Polysynaptic reflexes

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7
Q

Difference

A

Conduction time

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8
Q

Time consumed in peripheral nerve

A

Latent period

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9
Q

Portion of latency consumed in the cord

A

Nuclear delay

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10
Q

Reflex same side of body

A

Ipsilateral response

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11
Q

Other side of body response while the other is the stimuli

A

Contra lateral response

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12
Q

Subject sit on edge of desk with both feet off the floor. Using a hammer

A

Patellar reflex

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13
Q

Patella stretches what tendon

A

Quadriceps

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14
Q

Patellar reflex stimulates

A

Stretch receptors

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15
Q

Afferent impulse in sensory fiber of the femoral nerve leading to the

A

Lumbar and spinal cord

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16
Q

Patellar reflex is

A

Monosynaptic

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17
Q

Interneuron to relax antagonistic hamstring muscle

A

Inhibitory interneuron

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18
Q

What does patellar tendon tests

A

Function of femoral nerve and spinal cord segments L2-L4

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19
Q

Absence or decrease of reflex in patellar is called

A

Westphal’s sign

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20
Q

Set of fingers interlock into hook like form and out infront of Chest, pulling to opposite side

A

Jendrassik maneuver

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21
Q

Elicits a larger reflex

A

Jendrassik maneuver

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22
Q

Opposite of starch reflex

Contracts and activates Golgi tendon (proprioreceptor)

A

Golgi reflex

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23
Q

The activation of one muscle eight he simultaneous inhibition of firs antagonistic muscle

A

Reciprocal inhibition

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24
Q

Composed of 3-10 intrafusal muscle that lack myofilaments in central region and are non contractile

A

Muscle spindle

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25
Q

Type 1a fibers primary sensory. Type 2 fibers secondary sensory interested by

A

Gamma efferent fibers

26
Q

Contractile Muscle fibers are innervated by

A

Alpha efferent fibers

27
Q

Activating the motor neuron gives the muscle spindle the function to protect the skeletal muscles from over extending

A

Alpha efferent motor neuron

28
Q

A contracted muscle may stay contracted because of

A

Alpha gamma interaction

29
Q

Causes intrafusal fibers to contact

A

Alphas for neurons

30
Q

Cause muscle spindle to contrac this relieving slack that the music espindle develops when the muscle is on contacting state

A

Gamma motor neurons

31
Q

Also known as ankle jerk reflex

A

Achilles reflex

32
Q

Occurs when Achilles’ tendon is tapped while the foot is Dorsi-reflex

A

Achilles reflex

33
Q

What nerve root does Achilles check

A

S1-s2

34
Q

Site of stimulation

A

Receptor

35
Q

Jerking of the forearm occurs, tricep tendons hit with hammer.

A

Triceps Reflex

36
Q

tricep reflex stimulates

A

C6-C7 reflex arcs

37
Q

bicep brachii, jerking of the forearm

A

Biceps Reflex

38
Q

bicep reflex stimulates

A

C5-C6

39
Q

the arm is resting, jerking of forearm when the brachioradialis tendon is hit with hammer

A

brachioradialis reflex

40
Q

brachioradialis reflex stimulates

A

C5-C6

41
Q

Tapping on the forehead, primitive reflex

A

Glabellar Reflex

42
Q

if blinking occurs persistently during glabellar reflex this condition is called (abnormality)

A

Myerson’s sign

43
Q

afferent reflex is transmitted by the —- and efferent signals come back to oricularis oculi muscle via.. that causes blinking

A

trigeminal nerve— facial nerve

44
Q

Glabellar reflex is often seen

A

Parkinson’s Disease

45
Q

a finding elicited by a reflex test that verifies the presence and absence of prob in corticospinal tract also known as finger flexor reflex

A

hoffman reflex

46
Q

upper limb equivalent of babinski’s sign

A

hoffman reflex

47
Q

Babinski sign indicates a dysfunction at

A

upper motor neuron

48
Q

hoffman is analogous to

A

spinal stretch reflex

49
Q

test involves tapping the nail or flicking the terminal phalanx of the 3rd and 4th finger, positive sign with flexion of the phalanx

A

hoffman’s reflex

50
Q

2 important neurological test

A

plantar and babinksi

51
Q

stimulates which receptor

A

cutaneous receptors in the lateral aspect of the sole of the foot

52
Q

normal sign.. causes the toes to flex and move closer together

A

plantar reflex

53
Q

abnormal response, toes flare out and indicates damage to

pyramidal tract

A

babinksi sign

54
Q

in bright light the circular muscles of the iris contract and the pupil constricts, controlled by parasympathetic

A

pupillary reflex

55
Q

whether each pupil constricts when lighted up

A

direct pupillary reflex

56
Q

whether each pupil constricts with light shone into the other eye

A

consensual pupillary reflex

57
Q

convey information from the photoreceptors to the optic nerve which connects to the pretectal nucleus of the high midbrain

A

retinal ganglion

58
Q

why assessing tests in both eyes important

A

test to check on brain stem function damage

59
Q

lack of pupillary reflex can be caused by

A

optic nerve damage, oculomotor, brain death, depressant drugs, (barbituates)

60
Q

test when eyelashes are touched

A

palpebral reflex

Human Lab (12 decks)

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