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Anatomy > Chapter 41 > Flashcards

Chapter 41 Flashcards

1
Q

Spinal nerve plexuses are derived only from…

A

Ventral rami

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2
Q

Brachial plexus is formed directly from the ventral rami of spinal nerves…

A

C5, C6, C7, C8, T1

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3
Q

The ventral rami of C5 and C6 join to form the…

A

Upper trunk

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4
Q

The ventral rami of C7 continues as the…

A

Middle trunk

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5
Q

The ventral rami of C8 and T1 join to form the…

A

lower trunk

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6
Q

The anterior divisions of the upper and middle trunks join to form the…

A

Lateral cord

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7
Q

The anterior division of the lower trunk continues as the…

A

Medial cord

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8
Q

The three posterior divisions of the upper, middle, and lower trunks all join to form the …

A

Posterior cord

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9
Q

The cords give off a total of _ nerves and then continue distally as the _ major nerves of the upper limb

A

8; 4

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10
Q

Branches of the Ventral rami

A

dorsal scapular nerve

long thoracic nerve

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11
Q

Branches of the trunks

A

Nerve to the subclavius

Suprascapular nerve

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12
Q

Branches of the cords

A 
Lateral pectoral nerve
Medial pectoral nerve
Medial brachial cutaneous nerve
Medial antebrachial cutaneous nerve
upper subscapular nerve
thoracodorsal nerve
lower subscapular nerve
Axillary nerve
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13
Q

Nerves derived from the cords

A

musculocutaneous nerve
ulnar nerve
radial nerve
median nerve

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14
Q

Dorsal scapular nerve originates from

A

the ventral ramus of C5

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15
Q

What does the dorsal scapular nerve supply? (2)

A

rhomboid major and rhomboid minor muscles

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16
Q

The long thoracic nerve originates from what?

A

the ventral rami of C5, C6, and C7

17
Q

What does the long thoracic nerve supply?

A

serratus anterior muscle

18
Q

What does the suprascapular nerve supply? (2)

A

supraspinatus muscle and infraspinatus muscle

19
Q

What does the lateral pectoral nerve supply?

A

pectorals major muscle

20
Q

What does the medial pectoral nerve supply? (2)

A

pectoralis minor and pectorals major

21
Q

What does the medial brachial cutaneous nerve supply?

A

skin on the lower medial arm

22
Q

What does the medial antebrachial cutaneous nerve supply?

A

skin on the medial forearm

23
Q

What does the upper subscapular nerve supply?

A

subscapularis muscle

24
Q

What does the thoracodorsal nerve supply?

A

latissimus dorsi muscle

25
Q

What does the lower subscapular nerve supply? (2)

A

subscapularis muscle

teres major

26
Q

What does the axillary nerve supply? (2)

A

teres minor

deltoid

27
Q

What are the 3 inward extensions of the brachial fascia?

A

lateral intermuscular septum
medial intermuscular septum: anterior lamina
medial intermuscular septum; posterior lamina

28
Q

The 3 intermuscular septa divide the arm into what 3 compartments?

A

Anterior compartment
Medial Compartment (Neurovascular compartment)
Posterior compartment

Anatomy (13 decks)

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