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Anatomy & Physiology > Reflexes > Flashcards

Reflexes Flashcards

1
Q

What is a reflex?

A

An automatic response to stimuli carried through a specific neural pathway

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2
Q

What is an innate reflex?

A

A reflex that is genetically determined & you’re born with

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3
Q

What is an acquired reflex?

A

A reflex that is learned over time based on experience

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4
Q

What type of reflex involves communication in the spinal cord?

A

Spinal reflex

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5
Q

What type of reflex involves the brainstem?

A

Cranial reflex

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6
Q

List the general components of a reflex arc

A

Sensory receptor
Afferent neuron
Integrating center (site of communication between sensory and motor)
Efferent neuron
Effector muscle or gland

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7
Q

What is a monosynaptic reflex?

A

The simplest type of reflex where the integrating center involves only a single synapse

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8
Q

What is a polysynaptic reflex?

A

A reflex that involves at least one interneuron in the integrating center

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9
Q

List the important innate somatic reflexes

A

Stretch reflex
Tendon reflex
Flexor (withdrawal) reflex
Crossed extensor reflex

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10
Q

This reflex causes contraction of a skeletal muscle in response to stretching of that muscle

A

Stretch reflex

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11
Q

What type of reflex arc does the stretch reflex use?

A

Monosynaptic

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12
Q

This reflex causes a muscle to relax in response to stretching of the tendon

A

Tendon reflex

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13
Q

What type of reflex arc does the tendon reflex use?

A

Polysynaptic

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14
Q

This reflex causes immediate withdrawal from painful stimulus

A

Flexor reflex

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15
Q

What type of reflex arc does the flexor reflex use?

A

Polysynaptic

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16
Q

What does ipsilateral mean in regards to reflexes?

A

Incoming and outgoing signals propagate into and out of the same side of the body

17
Q

What does contralateral mean in regards to reflexes?

A

Incoming signals propagate on the opposite side of the body of which the outgoing signal propagates

18
Q

This reflex occurs with the flexor reflex to help you maintain balance by activating muscles on the opposite side of the body as the stimulus

A

Crossed extensor reflex

19
Q

What type of reflex arc does the crossed extensor reflex use?

A

Polysynaptic

20
Q

What innate, somatic reflex is contralateral?

A

Crossed extensor reflex

21
Q

What division of the nervous system do reflexes take place in?

A

Autonomic

22
Q

A reflex arc involving more neurons travels faster: true or false

A

False

Anatomy & Physiology (43 decks)

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