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Anatomy > Spinal Cord Exam 3 > Flashcards

Spinal Cord Exam 3 Flashcards

1
Q

The spinal cord is apart of what system

A

Central nervous system

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2
Q

The spinal cord is a link between the

A

Brain and the rest of the body

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3
Q

The spinal cord is protected by the

A

Vertebral canal and meninges and CSF

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4
Q

The CSF is housed in the

A

Subarachnoid space

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5
Q

Where does the spinal cord end?

A

At L1 level of the vertebral column, conus medullaris

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6
Q

Mostly neuronal cell bodies on inside, butterfly shaped

A

Gray matter

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7
Q

Posterior wings are

A

Dorsal horns

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8
Q

Anterior wings are

A

Ventral horns

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9
Q

White matter is mostly

A

Myelinated axons on outside

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10
Q

In unipolar neurons, the cell body has a

A

Single process attached

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11
Q

What divides the peripheral and central process

A

Single process

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12
Q

Carries sensation from skin to cell body

A

Peripheral process

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13
Q

Carries information away from cell body to spinal cord

A

Central process

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14
Q

In unipolar neurons, cell bodies are located…

A

Outside the spinal cord and form ganglia

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15
Q

In multipolar neurons, these neurons have a

A

Single axon and many dendritic processes

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16
Q

Relay impulses to muscles, glands, or other neurons

A

Multipolar

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17
Q

Functional classification of neurons

A

Sensory, motor, or interneurons

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18
Q

Also referred to as afferents

A

Sensory neurons

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19
Q

Sensory neurons characteristics

A

Carry sensation from skin to CNS,
unipolar neurons,
Cell bodies form ganglia

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20
Q

In sensory neurons, their axonal processes….

A

Enter the spinal cord

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21
Q

Motor neurons referred to as

A

Efferents, away from CNS

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22
Q

Motor neurons are…

A

Multipolar, deliverer impulses to muscles and glands.

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23
Q

In motor neurons, their cell bodies are in the…

A

Spinal cord and their axons project out to their targets

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24
Q

Also referred to as association neurons

A

Interneurons

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25
Q

Multipolar neurons and entirely located within the CNS

A

Interneurons

26
Q

Function of interneurons

A

Receive info from sensory neurons and decide what to do with it.
May decide to send the info up to the cerebral cortex for awareness or to motor neurons for motor response.

27
Q

Dorsal horns are comprised of cell bodies of

A

Interneurons, which receive input from afferents

28
Q

Ventral horns are comprised of cell bodies of

A

Motor neurons which deliver impulses to muscles and glands

29
Q

Clusters of cell bodies of unipolar neurons are…

A

Dorsal root ganglia

30
Q

Comprised of central processes of unipolar neurons

A

Dorsal roots

31
Q

Comprised of axons of motor neurons

A

Ventral roots

32
Q

Spinal nerves are where

A

Dorsal roots and ventral roots join

33
Q

Spinal nerves contain the….

A

Peripheral processes of unipolar neurons and axons of motor neurons

34
Q

Region of the spinal cord with a pair of spinal nerves attached to it

A

Spinal cord segment

35
Q

The spinal cord is protected by the same…

A

3 meninges found around the brain, and CSF

36
Q

In the spinal cord, the pia matter is attached to the

A

Surface of spinal cord

37
Q

In spinal cord, arachnoid mater is __ around the spinal cord with…

A

Loose, subarachnoid space containing CSF

38
Q

In spinal cord, the dura mater is

A

The thick outer layer

39
Q

Spinal nerves pass through the..

A

Intervertebral foramen

40
Q

The spinal cord has segments defined by the…

A

Attachment of a pair of spinal nerves

41
Q

There are how many cervical segments?

A

8

42
Q

The thoracic region has how many pairs of spinal nerves

A

12

43
Q

What region of spinal cord provides most of the innervation of the upper extremities

A

Cervical

44
Q

What region of the spinal cord provides the most innervation of the lower extremities and what region contributes to the lower extremities

A 
Most= lumbar 
Contributes= sacral
45
Q

The lumbar region has how many pairs of spinal nerves

A

5

46
Q

The sacral region of spinal cord has how many pairs of spinal nerves

A

5

47
Q

One pair of spinal nerves for sensory around anus

A

Coccygeal region

48
Q

What regions are enlarged for the extremities

A

Cervical and lumbar

49
Q

The spinal cord ends at the

A

Conus medullaris, L1

50
Q

The spinal cord has a collection of

A

Nerve roots at the end called cauda equina

51
Q

Order of spinal cord regions….

A 
Cervical
Thoracic
Lumbar
Sacral
Coccygeal
52
Q

Spinal nerves leave the…

A

Vertebral canal by passing through intervertebral foramina

53
Q

Conus medullaris

A

End of spinal cord

54
Q

Collection of ventral and dorsal roots

A

Cauda equina

55
Q

In a newborn, the spinal cord fills the

A

Vertebral canal and spinal nerves pass laterally through the intervertebral foramina

56
Q

Into adulthood, the vertebral column continues to….

A

Lengthen after spinal cord has reached its full length

57
Q

In an adult, the spinal cord fills closer to the…

A

End, the spinal nerves have to descend within the vertebral canal before they can pass through the intervertebral foramen

58
Q

Interior end of the spinal cord

A

Conus medullaris

59
Q

conus medullaris is located between

A

L1 and L2 vertebrae

60
Q

Extension of pia mater off conus medullaris is called

A

Filum terminale

61
Q

Horses tail, comprised of nerve roots from interior end of spinal cord

A

Cauda equina

62
Q

Lumbar puncture, spinal tap, is performed below

A

L1 level, removes CSF from around spinal cord

Anatomy (25 decks)

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