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A And P > 3.1 > Flashcards

3.1 Flashcards

1
Q

Spinal cord function

A

Integration of reflexes

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2
Q

Meninges

A

Dura
Pia
Arachnoid

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3
Q

Gray matter

A

Neural cell bodies

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4
Q

White matter

A

Tracts (axons)

“Elevator”

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5
Q

Gracile fasciculus

A

Carries sensations of trunk position and movement, deep touch, visceral pain, and vibration

Below T6

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6
Q

Cuneate fasciculus

A

Carries sensations of movement, deep touch, visceral pain, and vibration

Above T6

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7
Q

Spinothamalic

A

Light touch, itch, temperature, pain, and pressure

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8
Q

Spinoreticular

A

Sensations of pain from injury

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9
Q

Spinocerebellar

A

Carries information on muscle position (proprioception)

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10
Q

Upper motor neuron

A

Originates in the brain

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11
Q

Lower motor neuron

A

Inner area muscle as part of NMJ synapse at grey horns

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12
Q

Corticospinal

A

Fine control of limbs

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13
Q

Tectospinal

A

Reflexive head movement

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14
Q

Reticulospinal

A

Balance and posture, regulation of awareness of pain

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15
Q

Vestibulospinal

A

Lateral: balance and posture

Medial: control of head position

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16
Q

Spinal nerves

A

Carry sensory input and motor output

17
Q

Dermatomes

A

Region of skin inner aged by spinal nerves

Can be used to locate spinal damage

18
Q

Somatic reflexes properties

A

Require stimulation
Rapid
Involuntary
Non-variable

19
Q

Reflex arc steps

A 
Stimulus 
Sensory neuron activation
Integration by interneuron
Motor neuron activation
Effectors response
20
Q

Proprioreceptors

A

Give info about muscle position

21
Q

Intrafusal fibers

A

Afferent neurons monitor rate of change (primary) and length (secondary)

22
Q

Alpha

A

Extrafusal fivers

23
Q

Gamma

A

Intrafusal

24
Q

Stretch reflex

A

As a muscle is stretched, tone increases
Maintains posture and balance and stabilizes movements
Can involve multiple neurons, or as little as two

25
Q

Monosynaptic reflex

A

Patellar reflex

No interneurons

26
Q

Withdrawal reflex

A

Stimulated by painful stimuli
Reciprocal inhibition
Contraction of agonists
Relaxation of antagonists

27
Q

Crossed extensor reflex

A

Painful stimulus to foot while walking

One side contraction, other relaxation

A And P (7 decks)

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