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Questions and Answers
What type of joint is formed between the trochlea of the humerus and the trochlear notch of the ulna?
What type of joint is formed between the trochlea of the humerus and the trochlear notch of the ulna?
- Ball and socket joint
- Gliding joint
- Hinge joint (correct)
- Pivot joint
What reinforces the anterior surface of the elbow joints?
What reinforces the anterior surface of the elbow joints?
- Muscles (correct)
- Cartilage
- Ligaments
- Tendons
Where is the ulnar collateral ligament located?
Where is the ulnar collateral ligament located?
- Lateral wall of the capsule
- Attached to the olecranon process
- Medial wall of the capsule (correct)
- Attached to the radial notch of the ulna
What is the function of the anular ligament in the elbow joint?
What is the function of the anular ligament in the elbow joint?
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How does the synovial membrane divide the elbow joint?
How does the synovial membrane divide the elbow joint?
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What forms fatty pads between the synovial membrane and the fibrous layer of the capsule?
What forms fatty pads between the synovial membrane and the fibrous layer of the capsule?
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Which type of movement occurs between the humerus and the ulna at the elbow joint?
Which type of movement occurs between the humerus and the ulna at the elbow joint?
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Study Notes
Elbow Joint Structure
- A hinge joint is formed between the trochlea of the humerus and the trochlear notch of the ulna.
Supporting Structures
- The anterior surface of the elbow joint is reinforced by the brachialis muscle.
- The ulnar collateral ligament is located on the medial aspect of the elbow joint.
Ligament Function
- The annular ligament surrounds the head of the radius and holds it in place in the elbow joint.
Elbow Joint Capsule
- The synovial membrane divides the elbow joint into two compartments: the superior radioulnar joint and the inferior humeroulnar joint.
- Fatty pads, known as fat pads, are located between the synovial membrane and the fibrous layer of the capsule.
Joint Movement
- The elbow joint allows for flexion and extension movements between the humerus and the ulna.
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