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Upper Limb > Cutaneous Nerves and Drainage > Flashcards

Cutaneous Nerves and Drainage Flashcards

0
Q

What nerve supplies the arm laterally?

A

C5

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1
Q

What nerves supply the region at the base of the neck, extending laterally over the shoulder?

A

C3 and C4

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2
Q

What nerve supplies the forearm laterally and the thumb?

A

C6

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3
Q

What does dermatome C7 supply?

A

the middle and ring fingers (or the middle three fingers) and the middle of the posterior surface of the thumb

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4
Q

What does dermatome C8 supply?

A

the little finger, the medial side of the hand, and the forearm

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5
Q

What supplies the middle of the forearm to the axilla?

A

T1

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6
Q

What does dermatome T2 supply?

A

a small part of the arm and the skin of the axilla

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7
Q

What is the brachial plexus?

A

a major nerve network formed by the anterior rami of the C5-T1 spinal nerves

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8
Q

Most cutaneous nerves of the upper limb are derived from what?

A

brachial plexus

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9
Q

The cutaneous nerves to the shoulder are derived from what?

A

cervical plexus

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10
Q

What is the cervical plexus?

A

a nerve network consisting of series of nerve loops formed between adjacent anterior rami of the first four cervical nerves

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11
Q

What are the segments of the supraclavicular nerves?

A

C3 and C4

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12
Q

What does the supraclavicular nerves innervate?

A

the skin over clavicle and superolateral aspect of the pectoralis major

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13
Q

What are the segments of the posterior cutaneous nerve of the arm?

A

C5-C8

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14
Q

Which nerves are branches of the radial nerve?

A

posterior cutaneous nerve of the arm, posterior cutaneous nerve of the forearm, and inferior lateral cutaneous nerve of the arm

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15
Q

What does the posterior cutaneous nerve of the arm innervate?

A

the skin on the posterior surface of the arm

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16
Q

What are the segments of the posterior cutaneous nerve of the forearm?

A

C5-C8

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17
Q

What does the posterior cutaneous nerve of the forearm innervate?

A

the skin on the posterior surface of the forearm

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18
Q

What are the segments of the superior lateral cutaneous nerve of the arm?

A

C5 and C6

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19
Q

What nerve is the terminal branch of the axillary nerve?

A

superior lateral cutaneous nerve of the arm

20
Q

What does the superior lateral cutaneous nerve of the arm innervate?

A

the skin over the lower part of the deltoid and on the lateral side of the midarm

21
Q

What are the segments of the inferior lateral cutaneous nerve of the arm?

A

C5 and C6

22
Q

What does the inferior lateral cutaneous nerve of the arm innervate?

A

the skin over the inferolateral aspect of the arm

23
Q

What are the segments of the lateral cutaneous nerve of the forearm?

A

C6 and C7

24
Q

What does the lateral cutaneous nerve of the forearm innervate?

A

the skin on the lateral side of the forearm

25
Q

What nerve is the terminal branch of the musculocutaneous nerve?

A

lateral cutaneous nerve of the forearm

26
Q

What are the segments of the medial cutaneous nerve of the arm?

A

C8-T2

27
Q

From where does the medial cutaneous nerve of the arm and the forearm arise?

A

medial cord of the brachial plexus

28
Q

What does the medial cutaneous nerve of the arm innervate?

A

the skin on the medial side of the arm

29
Q

What nerve unites in the axilla with the lateral cutaneous branch of the 2nd intercostal nerve?

A

medial cutaneous nerve of the arm

30
Q

What are the segments of the intercostobrachial nerve?

A

T2

31
Q

The intercostobrachial nerve is a branch of what?

A

2nd intercostal nerve

32
Q

What does the intercostobrachial nerve innervate?

A

skin on the medial surface of the arm

33
Q

What are the segments of the medial cutaneous nerve of the forearm?

A

C8 and T1

34
Q

What does the medial cutaneous nerve of the forearm innervate?

A

the skin on the anterior and medial surfaces of the forearm

35
Q

What forms the floor of the axilla?

A

axillary fascia

36
Q

What supports the axillary fascia and pulls it and the skin inferior to it upward during abduction of the arm?

A

suspensory ligament of axilla

37
Q

What forms the base of the palmar aponeurosis?

A

superficial transverse metacarpal ligament

38
Q

What are the main superficial veins of the upper limb?

A

cephalic and basilic veins

39
Q

What forms communications between the superficial and deep veins?

A

perforating veins

40
Q

Where do the cephalic and basilic veins originate?

A

subcutaneous tissue on the dorsum of the hand from the dorsal venous network

41
Q

What are the main superficial veins of the upper limb?

A

cephalic and basilic veins

42
Q

Where do the cephalic and basilic veins orginate?

A

subcutaneous tissue on the dorsum of the hand from the dorsal venous network

43
Q

What are perforating veins?

A

form communications between superficial and deep veins

44
Q

What is the course of the cephalic vein?

A

ascends along lateral wrist, forearm and arm, passes between the deltoid and the pectoralis major (deltopectoral groove), and enters the clavipectoral triangle

45
Q

Where does the cephalic vein terminate?

A

axillary vein

46
Q

What is the course of the median cubital vein?

A

communicates with the cephalic vein anterior to the elbow, passes obliquely across anterior elbow, and joins basilic vein

47
Q

What is the course of the basilic vein?

A

ascends along medial forearm, runs parallel to brachial artery, and merges with accompanying veins of brachial artery to form the axillary vein

Upper Limb (8 decks)

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