L6 Anatomy

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Questions and Answers

Which of the following bones articulate at the elbow joint?

Humerus and radius (correct)

Humerus and femur

Radius and femur

Ulna and scapula

What is one of the primary ligaments associated with the elbow joint?

Radial collateral ligament (correct)

Coracoacromial ligament

Patellar ligament

Achilles tendon

Which movement is primarily produced by the muscles around the elbow joint?

Rotation and circumduction

Elevation and depression

Flexion and extension (correct)

Abduction and adduction

Which of the following correctly classifies the elbow joint?

Hinge joint Signup and view all the answers

Which muscle is primarily responsible for elbow flexion?

Biceps brachii Signup and view all the answers

Which muscle of the forearm is responsible for flexing and abducting the wrist joint?

Flexor carpi radialis Signup and view all the answers

Which nerve supplies the flexor carpi ulnaris muscle?

Ulnar nerve Signup and view all the answers

Which action is performed by the flexor digitorum superficialis?

Flexes proximal inter-phalangeal joints Signup and view all the answers

What is the action of the pronator teres muscle?

Pronation Signup and view all the answers

Which of the following muscles does NOT belong to the superficial layer of the forearm muscles?

Flexor policis longus Signup and view all the answers

What role does the flexor retinaculum serve in the wrist?

It prevents flexor tendons from popping out. Signup and view all the answers

What is the primary function of the brachioradialis muscle?

To flex the elbow. Signup and view all the answers

Which type of joint is the superior radioulnar joint classified as?

Synovial pivot joint Signup and view all the answers

What ligaments are involved in stabilizing the elbow joint?

Collateral and annular ligaments Signup and view all the answers

Which muscle is primarily responsible for elbow extension?

Triceps brachii Signup and view all the answers

What is the significance of the annular ligament in the forearm?

It holds the head of the radius to the ulna. Signup and view all the answers

Which structure connects the shafts of the radius and ulna?

Interosseous membrane Signup and view all the answers

What is the effect of median nerve compression in the carpal tunnel?

Development of carpal tunnel syndrome Signup and view all the answers

Study Notes

Front of Forearm

Contains the anterior compartment muscles.
These muscles are responsible for flexion of the wrist and fingers, and pronation of the forearm.

Back of Forearm

Contains the posterior compartment muscles.
These muscles are mainly responsible for extension of the wrist and fingers, and supination of the forearm.

Classify Elbow and Radioulnar Joints

Elbow joint is a synovial hinge joint (flexion/extension)
Radioulnar joints are synovial pivot joints.

Articulating Bones

Humerus, radius and ulna
Articulating bones of the proximal radioulnar joint are the radius and ulna
Articulating bones of the distal radioulnar joint are the radius and ulna.

Ligaments of the Elbow Joint

Radial collateral ligament
Ulnar collateral ligament
Annular ligament
Oblique cord

Movements of Elbow Joint

Flexion
Extension
Slight supination
Slight pronation

Muscles of Elbow Joint

Biceps brachii (flexion)
Brachialis (flexion)
Triceps brachii (extension)
Anconeus (extension)

Muscles of Radioulnar Joints

Supinator
Pronator teres
Pronator quadratus (pronation)

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Description

Explore the anatomy of the elbow and forearm with this quiz. Learn about the various muscles, joints, and ligaments that contribute to their function. Test your knowledge on flexion, extension, and the articulating bones of this crucial area.