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Lab 10 Flashcards

1
Q

How many spinal nerves are there in each region

A

Cervical: 8
Thoracic: 12
Lumbar: 5
Sacral: 5
Coccygeal: 1

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2
Q

4 nerve plexus

A

Cervical, brachial, lumbar, sacral
Know how to label all the nerves in these plexi

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3
Q

How many pairs of spinal nerves are there

A

31

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4
Q

Significance of conus medullaris and cauda equina

A

Cauda equina causes severe pain, while conus medullaris is only mild to moderate pain

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5
Q

How far down vertebral column does spinal cord extend

A

Between first and second lumbar vertebrae

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6
Q

Ganglia

A

Collection of cell bodies

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7
Q

Dorsal root vs dorsal root ganglion

A

Ganglion are where the cell bodies of neurons are and the root is where the extensions/axons are.

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8
Q

Why is white matter on outside and gray on inside of spinal cord

A

Grey matter can respond to some stimuli from neurons without transmitting information to the brain

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9
Q

DAVE

A

Dorsal Afferent, Ventral Efferent

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10
Q

Lesser occipital

A

Ventral Rami: C2, C3
Serves skin on back and side of head&neck

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11
Q

Greater Auricular

A

C2, C3
Skin of ear and over parotid gland

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12
Q

Transverse cutaneous

A

C2, C3
Skin on front and side of neck

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13
Q

Supraclavicular (medial, intermediate, lateral)

A

C3, C4
Skin on shoulder and clavicular

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14
Q

Ansa Cervicalis (superior and inferior roots)

A

C1-C3
Infrahyoid muscles of neck

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15
Q

Segmental branches

A

C1-C5
Deep muscles of neck,

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16
Q

Phrenic

A

C3-C5
Diaphragm

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17
Q

Axillary

A

C5, C6
Skin of shoulder, Deltoid and teres minor

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18
Q

Musculocutaneous

A

C5-C7
Flexor muscles of anterior arm
skin on antereolateral forearm

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19
Q

Median

A

Medial cord: C8-T1
Lateral cord C5-C7
Flexor muscles of anterior forearm
lateral palm, fingers, lateral 2/3 of hand on ventral side and dorsum fingers 2&3

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20
Q

Ulnar

A

C8, T1
Flexor muscles of anterior forearm, most intrinsic muscles of hand, skin of medial third of hand

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21
Q

Radial

A

C5-C8, T1
Posterior muscles of arm and forearm, posterior and lateral skin of entire limb

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22
Q

Dorsal scapular

A

C5
Rhomboid and levator scapulae

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23
Q

Long throacic

A

C5-C7
Serratus anterior

24
Q

Suprascapular

A

C5, C6
Shoulder joint, supraspinatus and infraspinatus

25
Subscapular
C5, C6 Teres major and subscapularis
26
Pectoral (lateral and medial)
C5-T1 Pec major and minor
27
Femoral
L2-L4 Anterior, medial thigh, leg, foot, hip and knee joint
28
Obturator
L2-L4 Medial thigh, hip and knee joints
29
Lateral femoral cutaneous
L2, L3 Lateral thigh, peritoneum
30
Iliohypogastric
L1 Lower abdomen and hip, anterolateral abdominal wall
31
Ilioinguinal
L1 External genitalia, medial thigh, inferior abdominal muscles
32
Genitofemoral
L1, L2 Scrotum (males), labia majora (females), anterior thigh, middle inguinal
33
Sciatic
2 nerves (tibial and common fibular) L4-S3 Tibia, fibula, knee
34
Tibial
L4-S3 Posterior surface of leg and sole of foot
35
Common fibular
L4-S2 Anterior and lateral surface of leg, thigh, toe extensors
36
Superior gluteal
L4-S1 Gluteus medius, minimus, tensor fascia lata
37
Inferior gluteal
L5-S2 Gluteus Maximus
38
Posterior femoral cutaneous
S1-S3 Butt, posterior thigh, popliteal, calf, heel
39
Pudendal
S2-S4 Perineum, external anal sphincter
40
Origin in CNS Sympathetic
Thoracic and lumbar regions of SC
41
Origin in CNS Parasympathetic
Brain stem and sacral region of spinal cord
42
Location of ganglia Sympathetic
Primarily in 2 chains next to spinal cord
43
Location of ganglia parasymp
On or near target organ
44
Axon length sympathet.
Short preganglionic, long postganglionic
45
Axon length parasympath
Long preganglionic, short postganglionic
46
Degree of branching Sympathet.
Extensive
47
Degree of branching parasypath
Minimal
48
Preganglionic neurotransmitter Sympathet.
Release ACh
49
Preganglionic neurotransmitter parasympath
Release ACh
50
Postganglionic neurotransmitter sympath.
NE, ACh, Epi
51
Postganglionic neurotransmitter parasympath.
Release ACh
52
Effects of the division sympath
General and widespread
53
Effects of the division parasympath
Specific and local
54
Advantage of sympathetic trunk for activation of sympathetic responses
The synapse in the sympathetic trunk can be at the same level, higher, lower, or laterally which allows for super highway of information flow up and down. It means it only takes a for commands for widespread effects.
55
Know the sympathetic and parasympathetic effects on the designated organs
Activity 2b Table, picture from class

A&P Lab (8 decks)

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