Shoulder and Elbow

Front

What is the function of the rhomboids?

Back

The rhomboids retract the scapula, pulling it towards the spine, and assist in stabilizing the shoulder blade.

Front

Identify the primary action of the infraspinatus muscle.

Back

The infraspinatus is responsible for external rotation of the shoulder joint.

Front

What is the anatomical location of the radiohumeral joint?

Back

The radiohumeral joint is located between the radius and the humerus, allowing for flexion, extension, and rotation of the forearm.

Front

Describe the radial collateral ligament.

Back

The radial collateral ligament is a cordlike band that provides lateral stability to the elbow joint, originating from the lateral epicondyle of the humerus and attaching to the annular ligament and olecranon process.

Front

What is the primary function of the teres major muscle?

Back

The teres major muscle assists in the internal rotation, adduction, and extension of the shoulder joint.

Front

Define the term 'scapula'.

Back

The scapula, or shoulder blade, is a flat, triangular bone located on the posterior side of the rib cage, connecting the humerus with the clavicle.

Front

What role does the supraspinatus play in shoulder movement?

Back

The supraspinatus initiates abduction of the arm and stabilizes the shoulder joint.

Front

Explain the significance of the humeroulnar joint.

Back

The humeroulnar joint is a hinge joint that allows for flexion and extension of the elbow.

Front

What is the function of the annular ligament?

Back

The annular ligament encircles the head of the radius, providing stability and allowing for rotation during pronation and supination of the forearm.

Front

Identify the main muscles involved in shoulder adduction.

Back

The main muscles involved in shoulder adduction include the latissimus dorsi, pectoralis major, and teres major.