Forearm Anatomy and Ligament Functions

Dr. Morton, a noted anatomist, explains the anatomy of the radius and ulna, the principal bones of the forearm. The tutorial covers their articulation with the humerus and carpals, and details the primary bony landmarks of each bone. The radius is identified as the lateral bone, with landmarks like the head, neck, radial tuberosity, and styloid process. The ulna, the medial bone, features landmarks such as the olecranon process, coronoid process, and trochlear notch. The tutorial concludes with a review of these anatomical features.

What are the primary bones of the forearm?

• Clavicle and Sternum

• Femur and Tibia

• Radius and Ulna

• Humerus and Scapula

Which bone plays a dominant role in wrist articulation?

• Radius

• Scapula

• Humerus

• Ulna

What is the name of the proximal landmark of the radius that is smooth and stone-shaped?

• Radial Tuberosity

• Head of the Radius

• Styloid Process

• Neck of the Radius

Where does the biceps brachii muscle insert on the radius?

• Radial Tuberosity

• Neck of the Radius

• Head of the Radius

• Styloid Process

What is the function of the interosseous membrane?

• Links the clavicle and sternum

• Connects the humerus and scapula

• Bridges the radius and ulna

• Attaches the femur and tibia

What is the proximal part of the ulna that forms the elbow called?

• Styloid Process

• Coronoid Process

• Olecranon Process

• Trochlear Notch

Which process on the ulna serves as an insertion for the brachialis muscle?

• Radial Tuberosity

• Styloid Process

• Coronoid Process

• Olecranon Process

What is the name of the notch on the ulna that articulates with the humerus?

• Olecranon Notch

• Trochlear Notch

• Coronoid Notch

• Radial Notch

What is the rounded portion of the distal ulna called?

• Coronoid Process

• Olecranon Process

• Radial Head

• Ulnar Head

Where do the ulnar collateral ligament and radial ulnar ligaments attach on the ulna?

• Coronoid Process

• Olecranon Process

• Styloid Process

• Radial Tuberosity