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Systems: MSK AB > Shoulder and Elbow Anatomy > Flashcards

Shoulder and Elbow Anatomy Flashcards

1
Q

Describe the arterial vasculature of the arm and forearm.

A
  • Subclavian artery
  • Axillary artery
  • Brachial artery
  • Radial and ulnar arteries
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2
Q

What does the shoulder girdle consist of?

A
  • Scapula
  • Clavicle
  • Associated musculature
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3
Q

Where do the muscles which move the scapula take their attachment from?

A

The trunk

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4
Q

Name the dorsal muscles.

A
  • Levator scapulae
  • Rhomboids
  • Latissmus dorsi
  • Trapezius
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5
Q

Describe the position of serratus anterior.

A

It is a ventrolateral muscle which attaches to the medial border of the scapula

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6
Q

What is the action of serratus anterior?

A

Protracts and stabilise the pectoral girdle

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7
Q

What is the ventral musculature of the trunk..

A
  • Pectoralis major

- Serratus anterior

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8
Q

What is the action of the ventral musculature?

A

Adduction

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9
Q

What actions occur as a result of glenohumeral rhythm?

A
  • Abrduction of the humerus

- Upward rotation of the scapula

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10
Q

What produces the contour of the shoulder?

A

Deltoid muscle

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11
Q

What movements is the deltoid responsible for?

A
  • Involved in almost all movement of the arm at the glenohumeral joint
  • Chiefly abduction
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12
Q

Name the posterior group of the short scapular muscles.

A
  • Supraspinatous
  • Infraspinatous
  • Teres minor
  • Teres major
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13
Q

What is the action of the posterior short scapular muscles?

A
  • Abduction

- External rotation

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14
Q

What muscle is found in the anterior group of the short scapular muscles?

A

Subscapularis

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15
Q

What is the action of the anterior short scapular muscles?

A

Internal rotation

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16
Q

What muscle spans the posterior surface of the humerus??

A

Triceps brachii

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17
Q

What is the action of triceps brachii?

A

Extends the arm and forearm

18
Q

What is the antagonist of the triceps?

A

Biceps brachii

19
Q

What are the attachments of biceps brachii?

A

Scapula to the radius

20
Q

What does the attachment of the biceps at the radius allow?

A

Flexion and supination of the forearm

21
Q

What action does brachialis have?

A

Powerful flexor of the elbow

22
Q

What action does brachioradialis have?

A

Strong flexor but only in the mid position

23
Q

What movements is the ulna involved in at the forearm?

A

Flexion and extension of the elbow joint

24
Q

What movements is the radius involved in at the forearm?

A
  • Flexions and extension of the elbow joint

- Prontation and supination

25
Q

How is the radius able to be involved in pronation and supination?

A

Moves around the ulna by articulating at the superior and inferior radioulnar joints

26
Q

What is the most powerful supinator?

A

Biceps brachii

27
Q

What are the antagonists of biceps brachii (supinator power)?

A
  • Pronator teres

- Pronator quardatus

28
Q

What roots form the brachial plexus?

A

C5-T1

29
Q

Name the trunks of the brachial plexus.

A
  • Superior
  • Middle
  • Inferior
30
Q

Name the divisions of the brachial plexus.

A
  • Anterior

- Posterior

31
Q

Name the cords of the brachial plexus.

A
  • Lateral
  • Posterior
  • Medial
32
Q

Names the branches of the brachial plexus.

A
  • Musculocutaneous
  • Axillary
  • Median
  • Radial
  • Ulnar
33
Q

What is the root value of musculocutaneous nerve?

A

C5-7

34
Q

What is the root value of axillary nerve?

A

C5-6

35
Q

What is the root value of median nerve?

A

C5-T1

36
Q

What is the root value of radial nerve?

A

C5-T1

37
Q

What is the root value of ulnar nerve?

A

C8-T1

38
Q

What cord does the ulnar nerve come from?

A

Medial cord

39
Q

What cord does the radial nerve come from?

A

Posterior cord

40
Q

What cord does the median nerve come from?

A

Medial and lateral cord

41
Q

What cord does the axillary nerve come from?

A

Posterior cord

42
Q

What cord does the musculocutanoeus nerve come from?

A

Lateral cord

Systems: MSK AB (43 decks)

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