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Module 204 MSK & Immune system > T2 L2 Nerve and blood supply to upper limbs > Flashcards

T2 L2 Nerve and blood supply to upper limbs Flashcards

1
Q

What is the stem artery that supplies the upper limb?

A

Subclavian artery

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2
Q

Where does the right subclavian artery come from?

A

Brachiocephalic trunk

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3
Q

Where does the left subclavian artery come from?

A

Arch of aorta

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4
Q

What divides the subclavian artery?

A

Scalenus anterior

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5
Q

What are the 3 divisions of the subclavian in relation to the muscle?

A

1st part - medial to muscle
2nd part - behind muscle
3rd part - lateral to muscle

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6
Q

Where does the dorsal scapular artery come from?

A

The 2nd or 3rd division of the subclavian artery

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7
Q

Where does the thyrocervical trunk come from?

A

The 1st division of the subclavian artery

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8
Q

When does the subclavian artery end and what does it become?

A

Ends as it crosses outer border of 1st rib to become axillary artery

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9
Q

What divides the axillary artery?

A

Pectoralis minor

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10
Q

When does the axillary artery end and what does it become?

A

Ends at lower border of teres major to become brachial artery

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11
Q

What does the brachial artery supply?

A

Flexor

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12
Q

What is the large branch of the brachial artery?

A

Profunda brachii artery

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13
Q

Why is a fracture of the humerus significant?

A

It can cause trauma to profunda brachii artery

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14
Q

Describe the path of the profunda brachii artery

A

Passes behind humerus to enter posterior compartment to supply extensor muscles

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15
Q

Where does the brachial artery divide and into what?

A

Divides in cubital fossa into radial artery and ulnar artery

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16
Q

What muscle covers the radial artery?

A

Brachioradialis muscle which comes from humerus and inserts into styloid process of radius

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17
Q

Describe the path of the radial artery around the wrist

A

Through anatomical snuff box
Pierces first dorsal interosseous muscle
Deep palmar arch

18
Q

What muscle covers the ulnar artery?

A

Flexor carpi ulnaris

19
Q

Describe the main venous return

A

Into the axillary artery which drains into subclavian vein

20
Q

What are the 2 superficial veins?

A

Cephalic

Basilic

21
Q

What does the cephalic vein drain?

A

Lateral forearm

22
Q

What does the basilic vein drain?

A

Medial forearm

23
Q

What is the function of the median cubital vein?

A

Forms a bridge between cephalic and basilic vein at elbow

Drains forearm

24
Q

What are the roots forming the brachial plexus?

A

Ventral primary rami of C5 to T1

25
Q

What motor innervation does C5 have?

A

Shoulder abduction and adduction

26
Q

What motor innervation does C6 / C7 have?

A

Elbow flexion and extension

27
Q

What motor innervation does C7 / C8 have?

A

Wrist flexion and extension

28
Q

What motor innervation does C8 / T1 have?

A

Movement of digits

29
Q

What does each trunk of the brachial plexus divide into?

A 
Anterior division (axons to flexor compartments) 
Posterior division (axons to extensor compartments)
30
Q

What cords does the anterior trunk form?

A

Lateral and medial cords

31
Q

What cords does the posterior trunk form?

A

Posterior cord

32
Q

What are the cords named in relation to?

A

Position in relation to axillary artery

33
Q

What does the lateral cord terminate as?

A

Musculocutaneous nerve

Lateral part of median nerve

34
Q

What does the musculocutaneous nerve supply?

A

Motor - flexor muscles of arm

Sensory - lateral forearm

35
Q

What does the median nerve supply?

A

Motor - anterior forearm and lateral hand

Sensory - lateral palm hand, D1, D2, D3 and half of D4

36
Q

What does the medial cord terminate as?

A

Medial part of median nerve

Ulnar nerve

37
Q

What does the ulnar nerve supply?

A

Motor - medial side of anterior forearm and hand

Sensory - medial hand, half of D4 and D5

38
Q

What does the posterior cord terminate as?

A

Radial nerve

Axillary nerve

39
Q

What does the radial nerve supply?

A

Motor - posterior arm and posterior forearm

Sensory - posterior arm, posterior forearm and lateral dorsum of hand

40
Q

What does the axillary nerve supply?

A

Motor - deltoid and teres major

Sensory - badge area f arm

41
Q

What is a dermatome?

A

Individual area of skin innervated by a single spinal nerve

Module 204 MSK & Immune system (44 decks)

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