BIOL 351 - Blood Vessels/Nerves of the Upper Limb

5 nerves of the upper limb

musculocutaneous, radial, axillary, median, ulnar

Nerve roots of the 5 nerves

Musculocutaneous = C5-C7

Radial = C5-T1

Axillary = C5, C6

Median = C6-T1

Ulnar = C8-T1

What does the musculocutaneous nerve innervate?

coracobrachialis, biceps brachii, brachialis

What does the radial nerve innervate?

all muscles of posterior compartment of arm and forearm

What does the radial nerve branch into?

superficial and deep radial nerve at cubital fossa

What does the median nerve innervate?

anterior compartment of the forearm (+carpal tunnel)

What does the ulnar nerve innervate?

flexor carpi ulnaris and part of flexor digitorum profundus

What does the axillary nerve innervate?

deltoid and smaller surrounding shoulder muscles

3 branches of aortic arch

brachiocephalic trunk, left common carotid, left subclavian arteries

2 branches of brachiocephalic trunk

right subclavian artery and right common carotid artery

What does the thoracic aorta supply?

thoracic viscera, muscles of chest and diaphragm, thoracic portion of spinal cord

Where does the thoracic aorta begin?

level of T5 vertebrae

3 branches of the subclavian arteries

thyrocervical trunk, internal thoracic artery, vertebral artery

What does the thyrocervical trunk supply?

muscles/tissues of the neck, shoulder, and upper back

What does the internal thoracic artery supply?

pericardium and anterior chest wall

What does the vertebral artery supply?

brain and spinal cord

What does the axillary artery supply?

muscles of pectoral region and axilla (armpit)

Where does the subclavian arteries become the axillary artery?

after passing the outer border of the first rib

Where does the axillary artery become the brachial artery?

When it passes the inferior margin of the teres major muscle

What does the brachial arteries supply?

upper limb

What does the brachial artery divide into, and where?

the radial artery and ulnar arteries at the cubital fossa

What do the radial and ulnar arteries supply?

forearm

Name this nerve.

Musculocutaneuous n

Name this nerve.

Radial n

Name this nerve.

axillary n

Name this nerve.

Median n

Name this nerve.

Ulnar n

Name these arteries.

subclavian aa.

Name these arteries.

axillary aa.

Name this artery.

brachial a

Name these arteries.

Lateral = radial a, medial = ulnar aof the forearm and hand.

12 veins of the upper limb

cephalic vein, median antebrachial vein, basilic vein, median cubital vein, radial vein, ulnar vein, brachial vein, axillary vein, basilic vein, brachiocephalic vein, superior vena cava, azygos vein

cephalic vein location

ascends along the radial side of the forearm

median antebrachial vein location

ascends on ulnar side

basilic vein location

ascends on the ulnar side

median cubital vein location

interconnects the cephalic and basilic vein

radial vein location

radial side

ulnar vein location

ulnar side

brachial vein location

merging of the radial and ulnar vein parallel to brachial artery

axillary vein components

basilic vein joins brachial vein to form axillary vein

brachiocephalic vein components

subclavian vein, external and internal jugular veins

superior vena cava components

right and left brachiocephalic veins

azygos vein location

ascends from the lumbar region over the right side of the vertebral column

Where does the azygos vein receive blood from?

hemiazygos vein

Name these veins, from top to bottom.

median cubital vein, median antebrachial vein, cephalic vein, basilic vein, radial vein, ulnar vein

Name these two veins.

Axillary vein on top, brachial vein below

Name these two veins.

Brachiocephalic vein on top, superior vena cava on bottom

Name these two veins.

Azygos vein on top, hemiazygos vein on bottom