Question

the ______ joins with the radius and some of the bones of the wrist and is the medial bone of the forearm.

multiple choice
ulna
clavicle
scapula
tibia
humerus

Explanation:

Identify key anatomical landmarks

Using the Skeletal Anatomy and Bone Identification knowledge points

• The question asks for a bone that is the "medial bone of the forearm" and joins with the radius and wrist bones.
• In anatomical position, the forearm contains two parallel bones: the radius and the ulna.

Determine medial vs lateral orientation

Using the Anatomical Directional Terms knowledge point

• Medial refers to a position closer to the midline of the body.
• In the anatomical position (palms facing forward), the radius is located on the lateral side (thumb side), and the ulna is located on the medial side (pinky side).
• Therefore, the medial bone of the forearm is the ulna.

Answer:

• ulna (Correct answer)
• clavicle
• scapula
• tibia
• humerus