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LBBBI15 > REFLEXES AND REACTION TIME > Flashcards

REFLEXES AND REACTION TIME Flashcards

1
Q
  • Are voluntary unlike reflexes
  • Involves higher brain functions
A

Reaction Time

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2
Q

An involuntary action which is an instantaneous response to a stimulus

a) reflex
b) axon
c) neuron
d) synapse

A

Reflex

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3
Q

A reflex occurs via neural pathways in the nervous system known as:

a) neural arcs
b) neuron
c) axon
d) gag reflex

A

Neural arcs

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4
Q

produced via single synapses between sensory axon and motor neurons

a) somatic nervous system
b) muscle stretch reflexes
c) spinal reflexes
d) somatic reflexes

A

Spinal reflexes

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5
Q

where neurons connect and communicate with each other

a) reflex
b) axon
c) neuron
d) synapse

A

Synapse

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6
Q

nerve cells that communicate information to the CNS and the rest of the body

a) reflex
b) axon
c) neuron
d) synapse

A

Neuron

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7
Q

part of the neuron that carries information to and from the spinal cord

a) reflex
b) axon
c) neuron
d) synapse

A

Axon

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8
Q

contraction of a muscle in response to its passive stretching

a) physiologic or action tremor
b) superficial reflexes
c) neuron
d) muscle stretch reflexes

A

Muscle Stretch Reflexes

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9
Q

Where is the cell body of the sensory axon located to illicit a patellar reflex?

a) skin
b) oral cavity
c) dorsal root ganglion in the lumbar region of the spinal cord (L2 to L4)
d) spinal cord

A

Dorsal root ganglion in the lumbar region of the spinal cord (L2 to L4)

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10
Q

Important in protecting the body from harmful stimuli

a) corneal reflex
b) gag reflex
c) stretch reflex
d) withdrawal reflex

A

Withdrawal Reflex

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10
Q

causes flexion of your leg AWAY from the stimulus

A

Flexor muscles

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11
Q

there is an [opposite/same] reaction in the opposite leg to enhance
postural support

A

opposite

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12
Q
  • More complex than a regular myotatic reflex (It involves four neurons)
  • Results in a longer delay between stimulus perception

a) ciliospinal reflex
b) achilles reflex
c) vasomotor reflex
d) pupillary reflex

A

Pupillary Reflex

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13
Q

[Miosis/Mydriasis]

Pupillary constriction

A

Miosis

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14
Q

[Miosis/Mydriasis]

Pupillary dilatation

A

Mydriasis

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15
Q

rapid dilation of the ipsilateral pupil (by 1 to 2 mm) with a painful or startling stimulus

a) pupillary reflex
b) carotid sinus reflex
c) ciliospinal reflex
d) gag reflex

A

Ciliospinal Reflex

16
Q

Contact with the cornea initiates 2 reflexes:

a) ciliospinal reflex
b) blink reflex
c) corneal reflex
d) blink reflex and tear production

A
  • blink reflex (corneal reflex)
  • tear production
17
Q
  • AKA the oculocephalic reflex (doll’s eye reflex)
  • Used to test CN Nerves III, VI, VIII

a) withdrawal reflex
b) gag reflex
c) auditocephalogyric reflex
d) synapse

A

Auditocephalogyric Reflex

18
Q
  • AKA the pharyngeal reflex
  • bilateral pharyngeal muscle contraction and
    elevation of the soft palate

a) corneal reflex
b) gag reflex
c) cough reflex
d) withdrawal reflex

A

Gag Reflex

19
Q

have receptor organs in the skin rather than in muscle fibers

A

Skin Reflex Arcs

20
Q

A positive plantar reflex is called:

a) withdrawal reflex
b) miosis
c) babinski sign
d) brudzinskis sign

A

Babinski sign

21
Q

A positive plantar reflex is a sign of a disease of the:

A

pyramidal tract (corticospinal tract)

22
Q

[TRUE/FALSE]

Sensory neurons = perceive a stimulus

A

TRUE

23
Q

[TRUE/FALSE]

Motor neurons = coordinate an action

A

TRUE

24
Q

Neurons that help in the integration of sensory information and motor activity

a) interneurons
b) afferent neurons
c) sensory neurons
d) synapse

A

Interneurons

25
Q

Where are the receptor organs of the skin reflex arcs located?

A

Skin

26
Q

What is the function of the gag reflex?

a) flexion of your leg AWAY from the stimulus
b) attempt to eliminate foreign objects from the oral cavity
c) blink reflex (corneal reflex) and tear production
d) dorsal root ganglion in the lumbar region of the spinal cord (L2 to L4)

A

Attempt to eliminate foreign objects from the oral cavity

27
Q

Spinal reflexes use how many neurons?

a) three
b) two
c) one
d) four

A

Two

LBBBI15 (10 decks)

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