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Anatomy3651 > Spinal Cord and Spinal Nerves > Flashcards

Spinal Cord and Spinal Nerves Flashcards

1
Q

The ____ ___ is the end of the spinal cord

A

conus medullaris

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2
Q

The two types of multipolar neurons are what?

A

interneurons, motor neurons

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3
Q

Interneurons are completely within the ______

A

CNS

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4
Q

The dorsal root and ventral root join together to form the ____ _____

A

spinal nerve

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5
Q

Many points of contact of pairs of spinal nerves form a ____ ____ _____

A

spinal cord segment

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6
Q

___ ____ is attached to the surface of the spinal cord

A

pia mater

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7
Q

____ ____ is loose around the spinal cord with subarachnoid space containing CSF

A

arachnoid mater

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8
Q

The cervical region has ___ pairs of spinal nerves

A

8

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9
Q

the thoracic region has ____ pairs of spinal nerves

A

12

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10
Q

The lumbar region has ___ pairs of spinal nerves

A

5

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11
Q

the coccygeal region has ___ pairs of spinal nerves

A

1

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12
Q

the cervical region nerves innervate the __ ____

A

upper extremities

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13
Q

the lumbar region nerves innervate the ___ _____

A

lower extremities

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14
Q

The sacral region nerves innervate the ____ _____n

A

lower extremities

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15
Q

the coccygeal region nerves innervate around the ____

A

anus

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16
Q

The spinal cord ends at ____

A

L1

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17
Q

Below L1 is the start of what?

A

cauda equina (dorsal and ventral roots

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18
Q

The spinal cord is also called what?

A

conus meddularis

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19
Q

The conus medullaris, or, inferior end of the spinal cord, is between what vertebrae?

A

L1 and L2

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20
Q

What is known as 1 synapse of a reflex?

A

monosynaptic reflex

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21
Q

Reflexes involve what type of neuron?

A

unipolar (and interneurons)

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22
Q

In a monosynaptic reflex, the ____ is lengthened and the ____ stretches

A

tendon, muscle

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23
Q

What is known as many synapses involved in a reflex and occurs after exposure to pain?

A

polysynaptic reflex

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24
Q

Polysynaptic reflexes involve what types of neurons?

A

unipolar, interneurons

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25
____ is a network of spinal nerves that allow the nerves in our bodies to be formed from various levels of spinal nerves
plexus
26
What is the upper extremity plexus?
brachial
27
What is the lower extremity plexus?
lumbosacral
28
Where is the extra C8 nerve located?
between C7 and T1
29
How many roots are in the brachial plexus?
5
30
what are the 5 brachial plexus roots?
C5, C6, C7, C8, T1
31
What are the 3 brachial plexus trunks?
superior, middle, inferior
32
How many brachial trunks are there?
3
33
How many brachial cords are there?
3
34
What are the 3 brachial cords?
lateral, posterior, middle
35
The superior trunk splits into what roots?
lateral, posterior
36
The middle trunk splits into what roots?
lateral, posterior
37
The inferior trunk splits into what cords?
medial, posterior
38
The lateral cord is composed of what trunks?
the anterior superior and middle
39
The posterior cord is composed of what trunks?
posterior superior, middle, and inferior
40
The medial cord is composed of what trunks?
anterior of inferior
41
How many nerves/branches are there?
3
42
What are the 3 nerves/branches?
musculocutaneous, median, ulnar
43
An injury at the lateral cord would affect what nerves?
musculocutaneous, 1/2 of median
44
An injury at the posterior cord would affect what nerves?
radial, axillary
45
An injury at the medial cord would affect what nerves?
ulnar, 1/2 of median
46
The musculotaneus nerve branches from what cord?
lateral
47
the median nerve branches from what cords?
1/2 lateral, 1/2 medial
48
The ulnar nerve branches from what cord?
medial
49
The radial nerve branches from what cord?
posterior
50
The axillary nerve branches from what cord?
posterior
51
What is the order of the brachial plexus components?
roots, trunks, divisions, cords, branches/nerves
52
The axillary nerve affects the sensory of what?
lateral shoulder
53
An injury to the axillary nerve would affect what movements?
shoulder abduction
54
The musculotaneous nerve affects the sensory of what?
anterior arm, lateral forearm
55
an injury to the musculotaneus nerve would affect what movements?
elbow flexion, supination
56
The radial nerve affects the sensory of what?
back of arm, forearm, hand
57
an injury to the radial nerve would affect what movements?
elbow, wrist, finger extension, supination
58
the median nerve affects the sensory of what?
palmar hand, digits 1,2,3, half of 4
59
an injury to the median nerve affects what movements?
wrist and finger, flexion, pronation
60
the ulnar nerve affects the sensory of what?
lateral hand
61
an injury to the ulnar nerve affects what movements?
finger abduction and adduction
62
the superior and inferior gluteal nerve innervate what muscle group?
gluteal
63
the femoral nerve affects the sensory of what?
anterior thigh, medial leg and foot
64
An injury to the femoral affects what movements?
hip flexion, knee extension
65
the obturator affects the sensory of what?
upper medial thigh
66
An injury to the obturator nerve affects what movement?
hip adduction
67
The sciatic nerve separates into what nerves?
tibial, common fibular
68
the tibial nerve affects the sensory of what?
plantar foot
69
an injury to the tibial nerve affects what movements?
hip extension, knee, plantar, and toe flexion
70
the common fibular nerve separates into what nerves?
superficial, deep
71
the superficial fibular nerve affects the sensory of what?
dorsum foot, not skin between toes 1 and 2
72
an injury to the superficial fibular nerve affects what movements?
eversion of foot
73
the deep fibular nerve affects the sensory of what?
between toes 1 and 2
74
an injury to the deep fibular nerve affects what movements?
dorsiflexion, extension of toes, inversion of foot
75
dorsiflexion, extension of toes, and inversion are affected by what nerve?
deep fibular
76
eversion of foot is affect by what nerve?
superficial fibular nerve
77
hip extension, and knee, plantar, and toe flexion are affected by what nerve?
tibial
78
hip adduction is affected by what nerve?
obturator
79
hip flexion and knee extension are affected by what nerve?
femoral
80
finger adduction and abduction are affected by what nerve?
ulnar
81
pronation, and wrist and finger flexion are affected by what nerve?
median
82
supination, and elbow, wrist, and finger extension are affected by what nerve?
radial
83
elbow flexion and supination are affected by what nerve?
muscolocutaneous
84
should abduction is affected by what nerve?
axillary
85
What cranial nerve innervates the lateral rectus?
6 (abducens)
86
What cranial nerve innervates the superior oblique?
4 (trochlear)
87
What cranial nerve innervates the inferior oblique, superior rectus, medial rectus, levator palpebrae superioris, and inferior rectus?
3 (oculomotor)

Anatomy3651 (33 decks)

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