Lecture 9

Question 1

Label the two in black

Answer 1

• Right subclavian (RSC) - on the left of pic

– comes directly off bc (brachicephalic)

-LSC (on right of pic looking at me)

– direct branch from aortic arch

Question 2

Label what is in black

Answer 2

Axillary a.

Question 3

Subclavian arteries have 3 divisions in relation to the anterior scalene muscle.

Part one is ______ to the anterior scalene m.

Part 2 is _____ to the anterior scalene m.

Part 3 is ______ to the anterior scalene m.

Answer 3

1) medial
2) posterior
3) lateral

Question 4

Subclavian arteries have 3 divisions in relation to the anterior scalene muscle.

What are the branches of part 1, part 2, and part 3?

Answer 4

1) - Internal thoracic (mammory) a
- vertebral artery
- thyrocervical arterial trunk
2) costocervical trunk (supreme intercostal and deep cervical)
3) no branches

Question 5

Label the branches of part 1 and part 2 of subclavian arteries.

Answer 5

• top pink = vertebral a
• middle pink = thyrocervical trunk
• lower pink = internal thoracic a

purple = costocervical trunk (part 2)

Question 6

• Vertebral artery passes through transverse formainal of which vertebrae?
• It also passes through ______
• Unites with opposite vertebral artery to form ________.

Answer 6

• C6 - 1
• formen magnum
• basilar artery

Question 7

Label the Part 1 subclavian branches? (off of the thyrocervical trunk)

1) Dark blue =
2) Green =
3) Light blue =

Answer 7

1) suprascapular a (supplies supra- and infraspinatus m)
2) transverse cervical artery (supplies rhomboids)
3) Inferior thyroid artery

Question 8

What is the companion nerve of the transverse cervical artery?

Answer 8

CN IX = glossopharyngeal

Question 9

Subclavian artery is renamed the axillary artery when?

Answer 9

At the lateral border of first rib

Question 10

Axillary artery is split into 3 parts by the pectoralis minor muscle.

1) Part one is ______ to the muscle
2) Second part is _____ to the muscle
3) Third part is _____ to the muscle.

Answer 10

1) superior
2) deep
3) inferior

Question 11

Label branch of the first part of axillary artery and what it supplies.

Answer 11

Superior thoracic artery

• posterior aspects of intercostal spaces 1 & 2 and part of serratus ant

Question 12

Label branches of the 2nd part of axillary artery and what it supplies or branches into

Answer 12

• Thoracromial a (left side)

– Pectoral, deltoid, acromial, and clavicular branches

• Lateral thoracic (lower)

–supplies pectoral m, lymph nodes and breast

Question 13

Label branches of the 3rd part of axillary artery and what it supplies/divides into

Answer 13

1) Posterior circumflex humeral artery
- passes around posterior aspect of surgical neck of humerus
- anastomoses with 2)
- supplies dletoid and triceps
2) Anterior circumflex humeral artery
3) Subscapular artery
- branches into the thoracodorsal a (supplies the latissimus) and
- cirumflex scapular a

Question 14

• What nerve runs with posterior circumflex humeral artery?
• What does does the posterior circumflex humeral artery occupy?

Answer 14

• Axillary nerve
• quadrilateral space

Question 15

1) ___ artery is a continuation of the axillary artery at the inferior border of teres major muscle.
2) What are the two main branches of this artery?

Answer 15

1) Brachial
- runs medial to median nerve in arm
- runs lateral to medial nerve in forearm
- passes deep to bicipital aponeurosis
2) Radial and ulnar arteries

Question 16

1) What is the first branch of the brachial artery?
2) What runs along with it?

Answer 16

1) Deep brachial artery – wraps around posterior surface of humerus
2) Radial nerve in the radial groove
- supplies posterior compartmemtn of arm
- branches into ascending branch of posterior circumflex humeral a AND descending branch becomes radial recurrent

Question 17

Radial artery enters wrist and hand to form the ________.

Answer 17

Deep palmar arch

Question 18

1) What is the main branch off of the ulnar artery?
2) Ulnar artery also entrers wrist and hand to form _____.

Answer 18

1) Common interosseous artery
- this turns into A/P interosseous arteries
2) superficial palmar arch

Question 19

1) Which vein drains the lateral side of the palmar arch?
2) medial side?

Answer 19

1) cephalic v – in superficial fascia of antebrachium and brachium (on lateral side)
2) basilic v – in deep fascia of brachiam (medial side)

Question 20

Which vein comes together with vena comitantes to form the axillary vein?

Answer 20

Basilic v

Question 21

What does the axillary vein turn into after passing under the clavicle?

Answer 21

Brachiocephalic v (and jugular v)

• there are 2 brachiocephalic veins but ONLY 1 brachiocephalic artery

Question 22

The two brachiocephalic veins form what?

Answer 22

Superior vena cava