Arm And Elbow

Question 1

Which condyle of the distal humerus articulates with the ulna?

Answer 1

Trochlea

Question 2

Which condyle of the distal humerus articulates with the radius?

Answer 2

Capitulum

Question 3

What type of joint is the elbow joint?

Answer 3

Synovial; hinge

Question 4

What three fossae on the distal humerus prevent excessive flexion and extension?

Answer 4

Olecranon fossa (extension), radial and coronoid fossae

Question 5

What are the stabilizing ligaments of the elbow joint?

Answer 5

Ulnar collateral, radial collateral and annular ligaments

Question 6

Which muscles are part of the anterior compartment of the brachium?

Answer 6

Biceps brachii, coracobrachialis and brachialis

Question 7

Which groove does the tendon of the long head of biceps brachii pass through?

Answer 7

Intertubercular groove

Question 8

What is the function of the biceps brachii?

Answer 8

Elbow flexion

Question 9

What is the function of the coracobrachialis?

Answer 9

Flexion and medial rotation of glenohumeral joint

Question 10

What structure does the brachialis attach distally to?

Answer 10

Ulnar tuberosity

Question 11

What is the function of the brachialis?

Answer 11

Flexion of the elbow joint

Question 12

What is the motor innervation of the anterior arm?

Answer 12

Musculocutaneous nerve

Question 13

What is the sensory innervation of the anterior arm?

Answer 13

Brachial plexus branches

Question 14

Which muscles make up the posterior compartment of the brachium?

Answer 14

Triceps brachii, anconeus

Question 15

What are the functions of the triceps brachii?

Answer 15

Extension of the elbow, adduction from long head only

Question 16

What is the function of the anconeus?

Answer 16

Elbow extension and stabilization

Question 17

What gives motor innervation to the posterior arm?

Answer 17

Radial nerve

Question 18

What nerve gives sensory information to the posterior arm?

Answer 18

Brachial plexus nerve

Question 19

Which blood vessel supplies the posterior arm and the anterior arm?

Answer 19

Brachial artery (anterior) and deep brachial artery (posterior)

Question 20

What borders the cubital fossa laterally and medially?

Answer 20

Brachioradialis (lateral), pronator teres (medial)

Question 21

What are the contents of the cubital fossa?

Answer 21

Tendon of biceps brachii, brachial artery, median nerve