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Anatomy And Phys 1 > Exm 3 (ch 13) > Flashcards

Exm 3 (ch 13) Flashcards

1
Q

cerebrospinal fluid function and produced where

A

Produced in apendical cells, provides protection

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2
Q

The meninges are composed of three layers and surround the entire CNS:

A

Dura matter, arachnoid mater, pia mater

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3
Q

outer layer, thickest and toughest,
continuous with the epineurium

A

Dura mater

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4
Q

contains interstitial fluid (fluid between cells) within dura mater

A

Subdural space

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5
Q

fluid filled subarachnoid space
between here and the pia mater(fluid is cerebrospinal fluid produced in the ventricles of the brain)

A

Arachnoid mater

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6
Q

covers the spinal cord and is the innermost
layer

A

Pia mater

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7
Q

extension of the pia mater that fuses with arachnoid and inner surface of the dura mater on each side to help suspend the spinal cord and prevent movement

A

Denticulate ligament

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8
Q

blunt inferior end of the cord

A

Conus medullaris

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9
Q

nerves in vertebral canal inferior to
the conus medullaris

A

Cauda equina

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10
Q

extension of the pia mater that
forms a fibrous attachment to the coccyx

A

Filum terminal

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11
Q

nerves of the arms

A

Cervical enlargement

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12
Q

nerves of the legs

A

Lumbar enlargement

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13
Q

CT surrounds the entire nerve

A

Epuneurium

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14
Q

CT surrounds
bundles of nerve
fascicles(axons)

A

Perineurium

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15
Q

individual
nerve fibers (individual
axons)

A

Endoneurium

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16
Q

How does information travel in the spinal cord?

A

• White matter tracts conduct nerve impulses to and from the brain
• Gray matter receives and integrates incoming and outgoing
information to perform spinal reflexes.

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17
Q

groove of the spinal cord on the
anterior side (ventral aspect)

A

Anterior median fissure

18
Q

dorsal surface of the spinal cord

A

Posterior median sulcus

19
Q

Outer spinal cord is myelinated ascending and descending
white matter axons
• Bundles of fibers form columns of funiculi

A

Notes

20
Q

The inner spinal cord is made up of grey matter

A

Cell bodies of nuerons

21
Q

has cerebrospinal fluid(CSF) and is
continuous with the fourth ventricle of the medulla
oblangata in the brain

A

Central canal

22
Q

Posterior grey horns contain axons of incoming sensory
neurons as well as cell bodies of interneurons

A

Notes

23
Q

Anterior grey horns contain somatic motor nuclei which
are clusters of cell bodies of somatic motor neurons that
provide nerve impulses

A

N

24
Q

One neuron carries impulses from
sensory receptors to the CNS

A

Posterior root

25
Q

Another neuron carries the
impulse from the CNS to the effector

A

Anterior root

26
Q

Some tracts send things to the brain and somethings away to the body 

A

Ascending and descending tractss

27
Q

Ascending a descending tracts come from what mater

A

White

28
Q

So above the dura mater of the
spinal cord at the region of the
____ above the dura
mater of the spinal cord usually
between the L3 and L4 vertebrae

A

Epidural space

29
Q

Sensory and motor

A

Mixed nerves, which exits intervertebral canals

30
Q

one synapse between a
motor neuron and a sensory neuron
• All ipsilateral

A

Monosynaptic

31
Q

more than one synapse
• Contains a sensory neuron, an interneuron
entirely within the CNS, and a motor neuron

A

Polysynaptic

32
Q

same side

A

Ipsilateral

33
Q

opposite side

A

Contralateral

34
Q

neural circuit
simultaneously contracts one muscle and
relaxes its antagonists

A

Reciprocal innervation

35
Q

no function from neck down

A

C1 to C3

36
Q

allows breathing due to the diaphragm

A

C4-C5

37
Q

some arm and chest muscle control

A

C6-C7

38
Q

intact arm function

A

T1-T3

39
Q

most thigh muscles and can walk with
long leg braces

A

T10-L1

40
Q

most other leg muscles and allows for
walking with short leg braces

A

L1-L2

Anatomy And Phys 1 (39 decks)

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