Elbow Joint

Question 1

Coracobrachialis (C)

Answer 1

Long and slender muscle of anterior arm.
Its function is to flex and adduct the arm at the shoulder joint
coracoid to humerus

Question 2

Triceps Bracchi (a)

Answer 2

M - A three headed muscle on the posterior aspect of the arm
O -
Long - infraglenoid tubercle of scapula
Medial - posterior humerus
Lateral - Posterior humerus
I - Olecranon of ulna and fascia of forearm
N - Radial Nerve
A -
Elbow - extension
Shoulder - extension and adduction/

Question 3

Brachialis (B)

Answer 3

M - Fusiform in the anterior compartment of the arm
O - Distal half of the anteriro surface of humerus
I - Coronoid process of the ulna
A - Flexion of arm at the elbow

Question 4

Brachioradialis (B)

Answer 4

M - Fusiform muscle loacted in the lateral posterior forearm
O - Lateral aspect of the distal end of the humerus
I - Lateral aspect of the distal radius
N - Radial nerve
A - Strongest in semi pronation of the forearm

Question 5

Supinator (B)

Answer 5

M - Spiral muscle contained in the posterior compartment of the forearm.
O - Lateral epicondyle of humerus, radial collateral and annular ligament
I - Lateral, posterior and anteriro surfaces of the proximal radiu s
N - Interosseus nerve
A- Forearm Supination

Question 6

Pronator Teres (B)

Answer 6

M - Fusiform muscle found in the anterior forearm
O - medial humerus and coronoid process of ulna
I - Lateral surface of the radius
N - Median
A - pronation of the forearm at the proximal radio ulna joint (some elbow flexion)

Question 7

Which bones make up the Elbow Joint

Answer 7

Ulna
Radius
Humerus

Question 8

What kind of joint is the elbow joint?

Answer 8

Synovial Uniaxial Hinge Joint

Question 9

What are the bony landmarks of the humerus? ant and post

Answer 9

Ant
- Lateral epicondyle
- Medial epicondyle
- Coronoid fossa
- Capitulum
- Trochlea
Post
- Olecranon fossa

Question 10

Bony landmarks of the Ulna? ant and post

Answer 10

Ant
- Trochlea notch
- Ulna tuberosity
- Coronoid process
Post
- Olecranon

Question 11

Radius bony landmarks ant and post?

Answer 11

• Radial head
• Radial tuberosity

Question 12

What are the articulating surfaces for the humeroradial joint

Answer 12

The capitulum of the humerus and the radial head of the radius

Question 13

What are the articulating surfaces of the proximal radioulnar joint?

Answer 13

The proximal ends of the radius and ulanr articualte to form the proximal radioulnar joint.
- the radial head articualtes with the radial notch of the ulna

Question 14

What three ligametns support the Elbow Joint

Answer 14

Ulnar collateral ligament
Radial collateral ligament
Annular ligament

Question 15

What are the Attachments for the Ulnar collateral ligaments?

Answer 15

O - Medial epicondyle of the humerus
I - Cornonoid process of the Ulnar
It is triangular in shape and is comprised of a anterior, posterior and inferior band

Question 16

Origin insertion of radial Collateral ligament

Answer 16

O - Lateral epicondyle of humerus
I - Blends with the annular ligament, supinator and extesnor carpi radialis brevis.

Question 17

Origin insertion of Annular ligaemnt

Answer 17

The annular ligament holds the radius and ulna together at their proximal atatchments to the humerus.

Question 18

What are the articualting surfaces of the Humeroulna joint

Answer 18

Ant
- the cornoid process of ulna with the coronoid fossa of the humerus
- the trochjlea of humerus with the trochlea notch of ulna
Post
- Olecranon of the ulna and the olecranon fossa of the Humerus

Question 19

What Kiind of joint is the radioulna joint

Answer 19

synovial pivot joint