Lecture 9

Question 1

Distinguish the origins of the left and right subclavian veins

Answer 1

Left subclavian is a direct branch from the aortic arch

Right subclavian is a branch from the brachiocephalic artery

Question 2

Name the location and branches of part 1 of the subclavian artery

Answer 2

medial to the anterior scalene muscle

Internal thoracic (mammary) A.
Vertebral A.
Thyrocervical arterial trunk

Question 3

Name the location and branches of part 2 of the subclavian artery

Answer 3

posterior to the anterior scalene muscle

Costocervial trunk (supreme intercostal and Deep cervical are it’s branches)

Question 4

Name the location and branches of part 3 of the subclavian artery

Answer 4

lateral to the anterior scalene muscle

Typically does not have branches

Question 5

What is the course and destination of the vertebral artery?

Answer 5

It passes through transverse foramina 6-1 and the foramen magnum

Unites with opposite vertebral artery to form the basilar artery(runs below the brain)

Question 6

What is the nerve that accompanies the transverse cervical artery?

Answer 6

CN IX (9)

Question 7

What is the direct continuation of the axillary artery? when does the axillary artery begin?

Answer 7

brachial artery ; when the subclavian artery passes under the first rib

Question 8

What branch(es) come off of part 1 of the axillary artery? how is part one defined?

Answer 8

the superior thoracic artery

superior to the pectoralis minor

Question 9

What branch(es) come off of part 2 of the axillary artery? how is part two defined?

Answer 9

The throacoacromial artery (trunk)

Lateral thoracic artery

part 2: deep to the pectoralis minor

Question 10

What branch(es) come off of part 3 of the axillary artery?how is part three defined?

Answer 10

posterior circumflex humeral artery

Anterior circumflex humeral artery

Part 3: inferior to the pectoralis minor

Question 11

describe how the axillary artery is divided into parts1-3

Answer 11

part1: superior to the pectoralis minor

Part 2: deep the the pectoralis minor

Part 3: inferior to the pectoralis minor

Question 12

What are the 2 branches of the subscapular artery?

Answer 12

the throacodorsal branch and the circumflex scapular branch

Question 13

What nerve runs with the thoracodorsal artery?

Answer 13

the thoracodorsal nerve

Question 14

Delineate the anatomical relationship of the deep brachial artery to the humerus.

Answer 14

The deep brachial artery wraps around the posterior surface of the humerus and has an ascending branch to the posterior circumflex humeral artery

Question 15

The deep brachial artery has a _____ _____ artery that supplies the ______ bone.

Answer 15

nutrient humeral ; humeral

Question 16

what is the major branch of the ulnar artery?

Answer 16

the common interosseous artery

Question 17

What are the 2 branches of the common interosseous artery?

Answer 17

The anterior and posterior interosseous arteries that run on either side of the interosseous membrane in the antebrachium

Question 18

Describe the blood return flow from the hand back to the subclavian vein.

Answer 18

Begins in the dorsal venous arch (from digits)

cephalic vein (drains the lateral side of the dorsal arch) and basilic vein (drains medial side of dorsal venous arch)

Axillary (union of basilic vein and venae comitantes) to subclavian (axillary once it passes under the clavicle) which forms one of the 2 brachiocephalic veins that become the vena cava

Question 19

Identify the anatomical position and clinical significance of the median cubital vein.

Answer 19

It lies superficial to the bicipital aponeurosis and serves as a useful venipuncture site.

Question 20

Identifiy the tributaries of the axillary veins

Answer 20

basilic vein and venae comitantes