MSK Session 3- The Arm And Cubital Fossa Flashcards Preview

SOPHIE'S ESA 2 > MSK Session 3- The Arm And Cubital Fossa > Flashcards

Flashcards in MSK Session 3- The Arm And Cubital Fossa Deck (20)
Loading flashcards...
0
Q

What are the proximal attachments of the heads of the biceps?

A
  • long head- attaches at the supraglenoid tubercle of the scapula.
  • short head- attaches to the coracoid process
1
Q

What are the three anterior arm muscles and what is their primary function?

A

Biceps brachii, brachialis, coracobrachialis

Flexion

2
Q

What are the 2 action of the biceps?

A
  • flexion of the forearm at the elbow

- supination of the flexed forearm

3
Q

What is the innervation of the biceps brachii?

A

Musculocutaneous nerve (C5,6,7)

4
Q

What are the proximal and distal attachments of the brachialis?

A
  • proximal- distal half of the humerus

- distal- coronoid process and ulna tuberosity.

5
Q

What is the action of the brachialis muscle?

A

Flexion of the forearm at the elbow, at all positions

6
Q

What is the innervation of the brachialis?

A

Musculocutaneous nerve (C5,6,7)

7
Q

What is the proximal and distal attachments of coracobrachialis?

A
  • proximal- coracoid process

- distal- middle third of the medial humerus

8
Q

What are the two main functions of coracobrachialis?

A

-flexion and adduction of the arm

9
Q

What is the innervation of the coracobrachialis?

A

Musculocutaneous nerve (C5,6,7)

10
Q

What are the two posterior arm muscles and what is their innervation?

A

Triceps brachii and anconeus

Radial nerve

11
Q

What is the action of triceps? (2)

A

Extension of the forearm at the elbow joint

Steadies the head of the humerus during abduction

12
Q

What is the action of anconeus? (2)

A

Aids the triceps during extension

Abducts the ulna during pronation

13
Q

What is the main artery supplying the arm?

A

Brachial artery

14
Q

When does the axillary artery becomes the brachial artery?

A

Once it has passed the inferior border of teres major.

15
Q

What are the three branches of the brachial artery and when do they arise?

A
  • radial and ulnar arteries arise in the apex of the cubital fossa
  • profunda brachii artery arises at the inferior border of teres major and lies with the radial nerve in the radial groove of the humerus.
16
Q

List the progression of veins (distal to proximal)

A

Median antebrachial vein
Median cubital vein
Basilic and cephalic veins
Axillary vein

17
Q

What are the 5 borders of the cubital fossa?

A

Superior- imaginary line between the medial and lateral epicondyle
Medial- pronator teres
Lateral- Brachioradialis
Roof- skin, fascia and bicipital aponeurosis
Floor- brachialis and supinator

18
Q

What are the contents of the cubital fossa from lateral to medial?

A

Bicipital tendon
Brachial artery
Median nerve

19
Q

What is strange about Brachioradialis?

A

It is a flexor of the forearm at the elbow, but is innervated by the radial nerve.

Decks in SOPHIE'S ESA 2 Class (74):