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anat and p > Spinal Cord > Flashcards

Spinal Cord Flashcards

1
Q

Where does the spinal cord start

A

Inferior to the medulla oblongata

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2
Q

Where does the spinal cord end?

A

Between L1 L2

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3
Q

Sulcus

A

Narrow groove

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4
Q

Fissure

A

Wider groove

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5
Q

Conus medullaris

A

Thin, conical spinal cord below L enlargement

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6
Q

Cauda Equina

A

Nerve root extending below the conus medullaris

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7
Q

Filum Terminae

A

Thin thread of Fibrous Tissue that attaches to the coccygeal ligament

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8
Q

Cervical Enlargement

A

Nerves for shoulders and limbs

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9
Q

Lumbar enlargement

A

Nerves for pelvis and lower limbs

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10
Q

Meninges

A

Membranes that isolate spinal cord from surroundings

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11
Q

Dura matter

A

The outer layer that is thick and durable and a thin cord

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12
Q

Arachnoid

A

Spider Webbed layer

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13
Q

Pia Mater

A

Inner most layer

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14
Q

What is meningitis

A

Bacteria in the meninges

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15
Q

Where is the epidural space

A

Between the Dura matter and walls of the vertebrae canal

Contains loose connective tissue and adipose tissue

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16
Q

Where is Cerebrospinal fluid

A

Circulates in subarachnoid space contains collagen and elastin fiber

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17
Q

Longitudty

A

Dura matter fuses with periosteum of occipital bone

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18
Q

Laterally

A

denticulate ligaments connect pia matter

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19
Q

Ventral roots

A

Contains Axons of Motor Nerves

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20
Q

Dorsal root

A

Contains axons of sensory nerves

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21
Q

Dorsal root ganglia

A

Big bulge on the dorsal root

22
Q

What is Gray Matter made of

A

Cell bodies dendrites synapses

23
Q

What is white matter made of

A

Myelin makes the color Axons of ascending sensory and descending

24
Q

What are the sections of gray matter

A 
The gray horn:
Posterior- Somatic and Visceral sensory Nuclei 
Anterior- Somatic Motor Nuclei 
Lateral- Visceral Motor 
Gray Commissure:
Axon crossing
25
Q

The gray horn:

A

Posterior- Somatic and Visceral sensory Nuclei
Anterior- Somatic Motor Nuclei
Lateral- Visceral Motor

26
Q

Gray Commissure:

A

Axon crossing

27
Q

Epineurium

A

Outer layer

28
Q

Perineurium

A

Middle, surrounds the facicle

29
Q

Endoneurium

A

Entire individual axon

30
Q

Permotormes

A

Each pair of spinal nerves motors a specific region of the body

31
Q

Nerve plexus

A

Complex and woven networks of nerve fibers that controls skeletal muscles cervical muscles brachial muscles and lumbar sacral muscles

32
Q

Cervical plexus

A

Consists of C1 through C5

33
Q

Phrenic Nerve

A

Helps control breathing

34
Q

Brachial plexus

A

C5 through T1

35
Q

Lumbar plexus

A

T 12 through L4

36
Q

Sacral plexus

A

L5 through S4

37
Q

Sensory neurons

A

10 million and they deliver to the CNS

38
Q

Motor neurons

A

I have 1 million delivers commands CNS to effectors

39
Q

Interneurons

A

2 billion they do both

40
Q

Divergence

A

Fast info

41
Q

Convergence

A

Into 1

42
Q

Serial processing

A

Move info

43
Q

Parallel

A

One to many

44
Q

Reverbratius

A

Positive feedback

45
Q

What is a reflex

A

The automatic response coordinated with the CNS

46
Q

Development Reflexes

A

Innate or required

Born or learned

47
Q

Information processing Reflex

A

Spinal reflex or cranial reflex

48
Q

Neural Circuitry

A

Monosynaptic polysynaptic neurons

49
Q

Polysynaptic

A

More complicated includes includes Interneurons

50
Q

Reciprocal inhibition

A

Action Potential in one inhibits the other

51
Q

The Babinski Reflex

A

Normal in an infant but indicates CNS damage in adults

anat and p (11 decks)

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