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Comparative Anatomy > Vessels and Nerves of the Thoracic Limb > Flashcards

Vessels and Nerves of the Thoracic Limb Flashcards

1
Q

The main arterial blood supply to the thoracic limb arises within the thorax as the…

A

Subclavian artery

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2
Q

The subclavian artery is a terminal branch of ___ on the right side, and a direct branch of ___ on the left side

A

The brachiocephalic; the aorta

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3
Q

VCISA

A

Vertebral, costocervical, internal thoracic, superficial cervical and axillary

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4
Q

What does the superficial cervical artery supply

A

The superficial muscles of the base of the neck, the superficial cervical lymph nodes, the muscles of the scapula and shoulder

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5
Q

The brachial plexus is formed by…

A

The ventral branches of the 6-8 C and 1-2 T spinal nerves

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6
Q

What did we have to reflect to expose the vessels and nerves on the medial aspect of the arm

A

The superficial and deep pectoral muscles

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7
Q

The axillary artery extends from/to…

A

The first rib to the conjoined tendons of the teres major and latissimus dorsi

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8
Q

What are the 4 primary branches of the axillary

A

External thoracic, lateral thoracic, subscapular and cranial circumflex humeral

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9
Q

The external thoracic artery is distributed almost entirely on…

A

The superficial pectorals (with the nerve)

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10
Q

The lateral thoracic artery supplies…

A

Part of latissimus dorsi, deep pectoral, cutaneous trunci and thoracic mammae

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11
Q

What are the branches of the subscapular artery

A

Thoracodorsal, caudal circumflex humeral and circumflex scapula

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12
Q

What has to be transected to see the subscapular artery

A

The teres major

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13
Q

What does the thoracodorsal supply

A

Part of the teres major and latissimus dorsi (ends in the skin)

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14
Q

The caudal circumflex humeral artery supplies…

A

Triceps, deltoideus, coracobrachialis, and infraspinatus muscles and the shoulder joint capsule

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15
Q

The circumflex scapula supplies…

A

The subscapularis and infraspinatus

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16
Q

The cranial circumflex humeral supplies…

A

The biceps brachii and the joint capsule of the shoulder

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17
Q

After the cranial circumflex humeral artery, the axillary turns into the…

A

Brachial artery

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18
Q

Branches of the brachial artery

A

Deep brachial, bicipital, collateral ulnar, superficial brachial, transverse cubital and deep antebrachial

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19
Q

The brachial continues into the proximal forearm and gives off…

A

The common interosseus

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20
Q

The collateral ulnar artery supplies…

A

The triceps, ulnar nerve and the elbow

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21
Q

The superficial brachial artery continues on the forearm as the…

A

Cranial superficial antebrachial artery (medial and lateral branches)

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22
Q

All the nerves dissected contain…

A

Somatic efferent neurons to striated muscles and afferent neurons from these muscles

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23
Q

Cutaneous somatic afferents are only found in…

A

Musculocutaneous, axillary, radial, median and ulnar

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24
Q

Cranial pectoral nerves arise from…

A

Ventral branches of the 6-8 C spinal nerves

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25
Q

Cranial pectoral nerves innervate…

A

Superficial pectorals

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26
Q

Suprascapular nerve leaves…

A

The 6-7 C spinal nerve

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27
Q

Suprascapular nerve supplies…

A

Supraspinatus and infraspinatus

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28
Q

What did we have to transect to expose the supraspinatus nerve

A

Supraspinatus muscle

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29
Q

Subscapular nerve arises from…

A

6-7 C spinal nerve

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30
Q

Subscapular nerve innervates…

A

Subscapularis

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31
Q

Musculocutaneous nerve arises from…

A

6-8 C spinal nerves

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32
Q

What does the musculocutaneous nerve lie between

A

Biceps brachii cranially and brachial vessels caudally

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33
Q

Musculocutaneous supplies…

A

Coracobrachialis, biceps brachii and brachialis

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34
Q

A branch of the musculocutaneous nerve communicates with…

A

The median nerve

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35
Q

At the distal end of the brachialis, the musculocutaneous nerve gives off…

A

The medial cutaneous antebrachial nerve (usually removed with the skin)

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36
Q

Axillary nerve arises from…

A

Combined 7-8 C spinal nerves

37
Q

Axillary nerve innervates…

A

Teres major, teres minor, deltoideus, and part of subscapularis

38
Q

Thoracodorsal nerve arises from…

A

C7-T1 (primarily from C8)

39
Q

Thoracodorsal nerve innervates…

A

Latissimus dorsi

40
Q

Radial nerve arises from…

A

C7-T2

41
Q

The radial nerve is motor to…

A

All the extensor muscles of the elbow, carpal and phalangeal joints; also triceps, tensor fasciae antebrachii and anconeus

42
Q

On the lateral side, at the distal 3rd of the arm, the radial nerve terminates as…

A

A deep and superficial branch

43
Q

The median and ulnar nerves arise from…

A

A common trunk from C8-T2 (median cranial, ulnar caudal)

44
Q

The common trunk of the median and ulnar nerves lies on…

A

The medial head of the triceps

45
Q

What nerve leaves the ulnar nerve near the middle of the arm

A

Caudal cutaneous antebrachial nerve

46
Q

The brachial artery in the forearm gives rise to…

A

Common interosseous and median artery

47
Q

What are the 3 main branches of the common interosseous

A

Ulnar, cranial interosseous and caudal interosseous

48
Q

The ulnar artery supplies…

A

The ulnar and humeral heads of the deep digital flexor and the flexor carpi ulnaris

49
Q

What did we have to transect to expose the caudal interosseous

A

The pronator quadratus

50
Q

What does the median artery give off

A

Deep antebrachial and radial artery

51
Q

After the common interosseous, the brachial artery turns into the…

A

Median artery

52
Q

What is the principle source of blood to the paw

A

The median artery

53
Q

What did we have to transect to expose the deep antebrachial artery

A

Humeral head of deep digital flexor

54
Q

What does the deep antebrachial artery supply

A

Flexor carpi radialis, deep digital flexor, flexor carpi ulnaris, and the superficial digital flexor

55
Q

Arteries of the axillary branch

A

Ext thoracic, lat thoracic, subscapular (thoracodorsal and caudal circumflex humeral), and cranial circumflex humeral

56
Q

Arteries of brachial branch

A

Deep brachial, bicipital, collateral ulnar, superficial brachial, common interosseous (cranial inter, caudal inter, and ulnar)

57
Q

Arteries of median branch

A

Deep antebrachial and radial

58
Q

External thoracic a. muscle

A

Superficial pectoral

59
Q

Lateral thoracic a. muscle

A

Deep pectorals, latissimus dorsi, cutaneous trunci

60
Q

Subscapular a. muscle

A

Subscapularis, teres major

61
Q

Caudal circumflex humeral a. muscle

A

Deltoideus, coracobrachialis, infraspinatus, triceps

62
Q

Thoracodorsal a. muscle

A

Latissimus dorsi

63
Q

Deep brachial a. muscle

A

Triceps

64
Q

Bicipital a. muscle

A

Biceps brachii, brachialis

65
Q

Superficial brachial a. muscle

A

Dorsum of forepaw

66
Q

Collateral ulnar a. muscle

A

Triceps

67
Q

Common interosseous a. muscle

A

Digital extensor muscles

68
Q

Ulnar a. muscle

A

Deep digital flexor, flexor carpi ulnaris

69
Q

Caudal interosseous a. muscle

A

Pronator quadratus

70
Q

Deep antebrachial a. muscle

A

Flexor carpi radialis, flexor carpi ulnaris, superficial digital flexor, deep digital flexor

71
Q

Median a. muscle

A

Paw

72
Q

Radial a. muscle

A

Deep vessel of paw

73
Q

Suprascapular n. origin

A

C6, C7

74
Q

Suprascapular n. muscle innervation

A

Supraspinatus, infraspinatus

75
Q

Subscapular n. origin

A

C6, C7

76
Q

Subscapular n. muscle innervation

A

Subscapularis

77
Q

Musculocutaneous n. origin

A

C6, C7, C8

78
Q

Musculocutaneous n. muscle innervation

A

Coracobrachialis, biceps brachii, brachialis

79
Q

Axillary n. origin

A

C7, C8

80
Q

Axillary n. muscle innervation

A

Teres major, teres minor, deltoideus, part of subscapularis

81
Q

Thoracodorsal n. origin

A

C7, C8, T1

82
Q

Thoracodorsal n. muscle innervation

A

Latissimus dorsi

83
Q

Radial n. origin

A

C7, C8, T1, T2

84
Q

Radial n. muscle innervation

A

Triceps brachii, tensor fasciae antebrachii, anconeous, common digital extensor, lateral digital extensor, supinator, extensor carpi ulnaris, extensor carpi radialis, ulnaris lateralis, abductor digiti I longus

85
Q

Median n. origin

A

C8, T1, T2

86
Q

Median n, muscle innervation

A

Pronator teres, flexor carpis radialis, superficial digital flexor, pronator quadratus, 3 head of deep digital flexor

87
Q

Ulnar n. origin

A

C8, T1, T2

88
Q

Ulnar n. muscle innervation

A

Flexor carpi ulnaris, ulnar and humeral heads of deep digital flexor

Comparative Anatomy (27 decks)

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