44 Arm Bones-Humerus

Question 1

What is the greater tubercle associated with?

Answer 1

Rotator cuff muscle attachment

The greater tubercle serves as an attachment point for several rotator cuff muscles.

Question 2

What is the lesser tubercle associated with?

Answer 2

Rotator cuff muscle attachment

The lesser tubercle also serves as an attachment point for rotator cuff muscles.

Question 3

What is the intertubercular sulcus (groove) the insertion point for?

Answer 3

• Latissimus dorsi
• Pectoralis major
• Teres major

This groove allows for the attachment of important muscles involved in shoulder movement.

Question 4

What does the deltoid tuberosity indicate?

Answer 4

Deltoid insertion on lateral humerus

The deltoid tuberosity is a prominent feature on the humerus where the deltoid muscle attaches.

Question 5

What is the lateral epicondyle the origin of?

Answer 5

Wrist extensors

The lateral epicondyle serves as the origin point for muscles that extend the wrist.

Question 6

What is the medial epicondyle the origin of?

Answer 6

Wrist flexors

The medial epicondyle serves as the origin point for muscles that flex the wrist.

Question 7

What does the olecranon fossa articulate with?

Answer 7

Olecranon process of ulna when elbow is extended

This fossa allows for the elbow joint’s extension by accommodating the olecranon process.

Question 8

What does the coronoid fossa articulate with?

Answer 8

Coronoid process of ulna when the elbow is flexed

This fossa accommodates the coronoid process during elbow flexion.

Question 9

What does the capitulum articulate with?

Answer 9

Head of radius

The capitulum is a rounded structure on the humerus that articulates with the radius.

Question 10

What does the trochlea articulate with?

Answer 10

Trochlear notch of ulna

The trochlea is a spool-shaped structure that interacts with the ulna at the elbow joint.

Question 11

Head of the humerus

Question 12

Humerus

Answer 12