Thoracic Limb Vessels

Question 1

Name the main branches of the thoracic limb

Answer 1

Subclavian artery (main supply), Axillary a., brachial a., median a.

Question 2

Name the deep (satellites to arteries of the thoracic limb

Answer 2

Median v
Brachial v
Axillary v
Subclavian v

Question 3

Superficial veins of thoracic veins

Answer 3

Accessory cephalic v
Cephalic v
Median cubital v
Axillobrachial v
Omobrachial v

Question 4

Branches of the Axillary Artery

Answer 4

External thoracic a. (May not be present in specimens)
Lateral thoracic a. (May not be present in specimens)
Subscapular a.
Cranial Circumflex humeral a.

Question 5

Branches of the Subscapular a.

Answer 5

1. Thoracodorsal a.
2. Caudal circumflex humeral a.

Question 6

Branches of the brachial artery

Answer 6

1. Deep brachial a.
2. Bicipital a.
3. Collateral ulnar a.
4. Superficial brachial a.
5. Transverse cubital a.
6. Common interosseous a.

Question 7

Branches of the Common interosseous a.

Answer 7

1. Cranial & caudal interosseous a.
2. Ulnar a.

Question 8

Branches of Median a.

Answer 8

1. Deep antebrachial a.
2. Radial a.

Question 9

Branches of radial a.

Answer 9

1. Dorsal & palmer common digital
2. Dorsal & palmer metacarpal
3. Axial/abaxial, dorsal/palmer proper digital

Question 10

Which branches associated with the axillary a. anastomose together?

Answer 10

Caudal circumflex humeral a.
Cranial circumflex humeral a.
Subscapular a.

Question 11

Where do the left and right subclavian aa. arise from?

Answer 11

Left subclavian a. - arises from aorta
Right subclavian a. - brachiocephalic trunk

Question 12

When does the subclavian aa. become the axillary a.?

Answer 12

Once it passes lateral to the first rib

Question 13

Subclavian gives rise to 4 branches before becomes axillary a.

Answer 13

1.) Vertebral a.
2.) Costocervical trunk a
3.) Superficial cervical a.
4.) Internal thoracic a.

Question 14

What muscle(s) does the external thoracic a. supply?

Answer 14

Superficial pectoral m.

Question 15

What muscle(s) does the lateral thoracic a. supply?

Answer 15

Deep pectoral, latissimus dorsi, cutaneous trunci, skin, and mammae in females

Question 16

What muscle(s) does the subscapular a. and its branches supply?

Answer 16

Subscapular a. - scapula, shoulder mm., long head of triceps, rhomboideus, trapezius
Thoracodorsal a. - latissimus dorsi, teres major, skin
Caudal circumflex humeral a. Triceps brachii, coracobrachialis, infraspinatus, shoulder joint

Question 17

What muscle(s) does the cranial circumflex humeral a. supply?

Answer 17

Biceps brachii, shoulder joint

Question 18

What is the main trunk in the brachial region?

Answer 18

Brachial a.

Question 19

What muscle(s) does the deep brachial a. supply?

Answer 19

Triceps brachii m.

Question 20

What muscle(s) does the bicipital a. supply?

Answer 20

Biceps brachii m.

Question 21

What muscle(s) does the collateral ulnar a. supply?

Answer 21

Triceps brachii, ulnar n., elbow

Question 22

What branch does the superficial brachial a. give rise to?

Answer 22

Cranial superficial antebrachial a.

Question 23

What muscle(s) does the transverse cubital a. supply?

Answer 23

Elbow and adjacent mm.

Question 24

What is the principal source of blood supply to the manus of the dog?

Answer 24

Median a.

Question 25

The superficial palmar arch is formed by which 2 arteries?

Answer 25

Median a. and caudal interosseous a.

Question 26

What are the four levels of arterial blood supply to the manus?

Answer 26

Dorsal-superficial
Dorsal -deep
Palmer-superficial
Palmer- deep

Question 27

What are the superficial branches of the arterial blood supply to the manus called?

Answer 27

Dorsal common digital a.
Palmer common digital a.

Question 28

What are the deep branches of the deep arterial blood supply to the manus called?

Answer 28

Dorsal metacarpal a.
Palmar metacarpal a.

Question 29

What are the branches of the arterial supply to the digits called?

Answer 29

The dorsal and palmer common digital aa.
Abaxial & axial dorsal proper digital aa.

Question 30

What branch of the median a. does the blood supply to the digits and manus come from?

Answer 30

Radial a gives rise to:
dorsal & palmer common digital arteries (superficial)
dorsal & palmer metacarpal (deep)
Axial/abaxial, dorsal/ palmer proper digital aa

Question 31

Where does the cephalic vein arise from?

Answer 31

The palmer aspect of the manus and then courses to the cranial aspect of the antebrachium where it joins the accessory cephalic vein

Question 32

What does the cephalic vein drain into?

Answer 32

External jugular vein

Question 33

What muscle in the shoulder region does the cephalic vein pass deep to?

Answer 33

Vein passes deep to brachiocephalicus m

Question 34

Explain the relationship of the axillobrachial and omobrachial veins to the cephalic vein

Answer 34

Once cephalic vein dives deep the Axillobrachial vein continues cranially, the axillobrachial vein then gives rise to the omobrachial vein which goes to external jugular and passes superficial to the brachiocephalicus m.

Question 35

What veins drain into the accessory cephalic veins?

Answer 35

Veins on the dorsal surface of the manus (dorsal common digital veins)

Question 36

What structure connects the brachial and median vein with the cephalic vein?

Answer 36

Median cubital vein