What is arm parts?

Arms are complex structures consisting of bones, muscles, joints, and nerves. The arm is divided into three major parts: the upper arm, forearm, and hand.

Upper Arm:

• The upper arm consists of the humerus bone, which is the largest bone in the upper limb.
• The humerus bone connects the shoulder blade to the elbow joint.
• The upper arm also contains several muscles, including the biceps brachii, triceps brachii, and deltoid muscles.

Forearm:

• The forearm consists of two bones, the radius and ulna.
• These two bones run parallel to each other down the length of the forearm.
• The forearm contains many muscles, including flexors and extensors of the wrist and fingers.

Hand:

• The hand consists of 27 small bones divided into the wrist, palm, and fingers.
• The wrist contains eight small bones called carpals, which connect the forearm to the hand.
• The palm contains five bones called metacarpals, which make up the framework of the hand.
• The fingers contain 14 small bones called phalanges, which allow for movement and dexterity of the hand.