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IONM > Anatomy > Flashcards

Anatomy Flashcards

1
Q

Nuclei

A

Bundles of cell bodies in the CNS

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2
Q

Ganglia

A

Bundles of cell bodies in the PNS

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3
Q

Schwann Cells

A

Myelinate axons in the PNS

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4
Q

Oligodendrocytes

A

Myelinate cells in the CNS

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5
Q

White matter

A

Myelin covered axons

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6
Q

Grey matter

A

Unmyelinated neuron structures

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7
Q

Nerve

A

Bundle of axons in the PNS

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8
Q

Tract

A

Bundle of axons in the CNS

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9
Q

Sensory Neurons

A

Send info to the CNS

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10
Q

Motor neurons

A

Carry info from the CNS to glands, organs, and muscles

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11
Q

Somatic nervous system

A

Part of the PNS that controls the voluntary systems (afferents from skin, muscles, joints)

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12
Q

Autonomic Nervous System

A

Part of the PNS that controls involuntary muscles such as cardiac and smooth muscle

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13
Q

CNS

A

Brain and Spinal cord

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14
Q

Brainstem is composed of…

A

Mesencephalon (midbrain), pons, medulla oblingata

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15
Q

Inside of the cell charge

A

-70mV

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16
Q

What maintains the resting state in a cell

A

Sodium/Potassium pump

17
Q

Activation Threshold

A

When an action potential is fired -55mV

18
Q

Axon Hillock

A

Where the soma and axon meet and summation of of IPSP and EPSPs occur

19
Q

Efferent signals go towards…

A

The effector cell

20
Q

Afferent signals go towards…

A

The brain

21
Q

Motor Cortex

A

Pre central gyrus

22
Q

Somatosensory cortex

A

Post central gyrus

23
Q

Conus Medullaris

A

Bottom of the spinal cord, typically around T12-L2

24
Q

Cauda Equina

A

(Horses Tail) bundle of nerve roots past the conus medullaris that exit out the lumbar vertebrae

25
Q

Myotomal level

A

All the muscles innervated by a nerve root

26
Q

How many arteries provide blood supply to the dorsal column?

A

2 posterior spinal arteries

27
Q

How many arteries perfuse the anterior 2/3 of the spinal cord?

A

1 anterior spinal artery

28
Q

ACA perfuses what part of the brain?

A

Medial part of the brain

29
Q

MCA perfuses what part of the brain?

A

Lateral parts

30
Q

3 types of sensory information transmitted by the Dorsal column

A

Vibration, fine touch, proprioception

IONM (5 decks)

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