Arm Bones

Front

What are the main arm bones in the human body?

Back

The main arm bones are the humerus (upper arm), radius (forearm, on the thumb side), and ulna (forearm, on the pinky side).

Front

What is the function of the humerus?

Back

The humerus is the long bone in the upper arm that connects the shoulder to the elbow, allowing for a wide range of arm movements.

Front

What is the role of the radius in the arm?

Back

The radius allows for the rotation of the forearm and is involved in wrist movement.

Front

What is the ulna's primary function?

Back

The ulna provides stability to the forearm and forms the elbow joint with the humerus.

Front

How do the radius and ulna work together?

Back

The radius and ulna work together to allow for pronation and supination of the forearm, enabling the palm to face up or down.

Front

What is the anatomical position of the arm?

Back

In the anatomical position, the body is standing upright, facing forward, with arms at the sides and palms facing forward.

Front

What is the significance of the elbow joint?

Back

The elbow joint connects the humerus to the radius and ulna, allowing for flexion and extension of the arm.

Front

What are the major joints associated with the arm bones?

Back

The major joints are the shoulder joint (glenohumeral joint), elbow joint, and wrist joint.

Front

What is the difference between the radius and ulna?

Back

The radius is located on the thumb side of the forearm and is involved in wrist movement, while the ulna is on the pinky side and provides stability.

Front

What is the role of ligaments in the arm?

Back

Ligaments connect bones to other bones, providing stability to the joints in the arm.