SA Thoracic Vessels and Nerves

Question 1

Main supply to the paw in thoracic limb?

Answer 1

Median a.

Question 2

First branch off the axillary artery?

Answer 2

External thoracic a.

Question 3

External thoracic a. supplies…?

Answer 3

almost the entire superficial pectoral

Question 4

Which artery runs caudally across the axillary lymph node?

Answer 4

Lateral thoracic a.

Question 5

Lateral thoracic a. supplies what?

Answer 5

Latissimus dorsi, deep pectoral and cutaneous trunci

Question 6

What does the subscapular artery supply?

Answer 6

Subscapularis, part of the teres major and the scapula

Question 7

Branches off of the subscapular a.?

Answer 7

Thoracodorsal a. and the Caudal circumflex humeral a.

Question 8

Throacodorsal a. supplies what?

Answer 8

teres major and latissimus dorsi

Question 9

Caudal circumflex humeral a. supplies what?

Answer 9

triceps, deltoideous, coracobrachialis, infraspinatus, and should joint capsule

Question 10

Cranial circumflex humeral a. supplies?

Answer 10

biceps brachii m. and the shoulder joint

-collateral circulation with caudal circumflex humeral a.

Question 11

After the cranial circumflex humeral a. branches off the axillary a., the axillary a. becomes which a.?

Answer 11

Brachial a.

Question 12

Deep brachial a. supplies?

Answer 12

• dives deep into the brachium, triceps m.

- runs caudal to supply the triceps brachii muscle

Question 13

Bicipital a. supplies?

Answer 13

biceps and brachialis m.

Question 14

Collateral ulnar a. supplies?

Answer 14

triceps m. and caudal elbow (joint capsule)

Question 15

Superficial brachial- a. supplies?

Answer 15

superficial brachium (cranial surface)

Question 16

Transverse cubital a. supplies?

Answer 16

cranial elbow, dives deep into elbow joint

Question 17

Common interosseous a.

Answer 17

is short, dives b/t radius and ulna. Ulnar, caudal interosseous, cranial interosseous

Question 18

Median a. supplies?

Answer 18

• supplies the palmar surface of the paw
• passes through the carpal canal
• gives off the radial a.
• gives off superficial palmar arch and deep antebrachial a.

Question 19

Arterial supply to the manus

Answer 19

Dorsal surface is small arteries. Palmar surface is the median artery.

Question 20

Vein in thoracic limb used for catheters and venipuncture

Answer 20

cephalic v.

Question 21

Brachial plexus

Answer 21

• ventral branches of C6-T2
• somatic/sensory & motor innervation to the forelimb
• axillary region

Question 22

Cranial and caudal pectoral n.

Answer 22

superficial and deep pectoral m.

Question 23

Lateral thoracic n.

Answer 23

cutaneous trunci m.

important for neuro exams

Question 24

Thoracodorsal n.

Answer 24

latissimus dorsi m.

Question 25

Suprascapular n.

Answer 25

supplies the infraspinatus and supraspinatus m.

Question 26

Subscapular n.

Answer 26

multiple branches, travel into the subscapularis m.

Question 27

Musculocutaneous n.

Answer 27

coracobrachialis m., biceps brachii m., brachialis m.

-sensory to the medial aspect of the antebrachium

Question 28

Axillary n.

Answer 28

• teres major, teres minor, deltoideus, part of the subscapularis (shoulder stabilizers)
• runs w/ the caudal circumflex humeral a.
• sensory to the caudal scapular region and craniolateral brachium

Question 29

Radial n.

Answer 29

• *weight bearing**
• extensors of the elbow, carpus and digits
• deep and superficial br.
• superficial br. runs w/ cephalic v.
• superficial gives off the lateral cutaneous antebrachial n.
• autonomous innervation to the dorsal manus

Question 30

Median n.

Answer 30

• common trunk w/ ulnar n.
• pronator teres m., pronator quadratus m., FCR, SDF, parts of DDF
• Runs through the carpal canal to supply sensory to the palmar aspect of the paw

Question 31

Ulnar n.

Answer 31

• FCU m., parts of the DDF m.
• passes through carpal canal
• sensory innervation to the lateral surface of the metacarpus and 5th digit

Question 32

Innervation of the Glenohumeral Joint

Answer 32

axillary n. & suprascapular n.