The bone on the inside forearm (near the thumb) is the radius; the one on the outside of the forearm is the ulna.
A group of bones in the carpus form the wrist. This is called a wrist bone.
The name of the wrist bone beginning with S is the Scaphoid bone which is one of the 8 carpal bones that make up the wrist. The Scaphoid bone is located in the proximal (nearest to body) row of the two rows of carpals and is on the thumb side of the wrist.
Lower legalso called the calf bone
ligaments.
The Humerus Would be the upper bone near the bicep. The lower two bones are the Radius, and the Ulna. The Radius follows the thumb, and crosses when you twist your wrist.
tendon (fibrous tissue) connects muscles to bones
A joint
ligaments
Ulna is the bone, and there is also an Ulnar Nerve around the same area.
As a group they are called the carpals. Each carpal has their own name, such as scaphoid and capitate.
The Ulna is the common name for: Lower Arm Bone.
Radius is the name for lower inner arm bone