Functions of the Arm

Functions of the Arm include:

  • The arm provides the strength and dexterity needed to lift and carry objects of varying sizes and weights.
  • It allows for precise movements for grasping objects, whether close or far away.
  • The arm muscles allow pushing objects away from the body and pulling them closer, helping in activities such as opening doors and moving furniture.
  • The hand and fingers, controlled by the arm muscles, enable the manipulation of objects for tasks like typing, writing, and handling tools.
  • Arms play an important role in non-verbal communication through gestures, expressing emotions, emphasizing speech, and conveying information.
  • In activities requiring balance or stabilization, such as during sports or physical exertion, the arm muscles contribute to maintaining equilibrium.
  • The arms assist in supporting and stabilizing body weight during activities such as climbing, lifting oneself from a seated position, or performing exercises like push-ups.

Bones and Muscles in the Arm

The arm body part is the upper limb of vertebrates. Anatomy of the arm involves the detailed study of its bones, muscles, nerves, blood vessels, and connective tissues. Learning about the arm muscles and arm bones helps in understanding how movements are coordinated and how injuries can be prevented or treated.

In this article, we will cover the anatomy of the arm and read about the nerve supply and blood supply in the arm along with arm muscles and bones, in detail.

Table of Content

  • Arm Body Part – Anatomy of the Arm
  • Arm Muscles Anatomy
    • Biceps Brachii
    • Brachialis
    • Coracobrachialis
    • Triceps Brachii
  • Arm Bones
    • Forelimbs and Hindlimbs
    • Parts of the Arm
    • Bones in the Arm
    • Humerus
    • Radius and Ulna
    • Anatomy of Hand
  • Blood Supply of Arm
  • Nerve Supply of Arm
  • Functions of the Arm

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Arm Body Part – Anatomy of the Arm

An arm is the upper limb or forelimb of vertebrates, such as humans and primates. It’s also known as the brachium in human anatomy. The arm is made up of three sections: the upper arm, forearm, and hand. It extends from the shoulder joint to the fingers and contains 30 bones, including the humerus in the upper arm and the radius and ulna in the forearm....

Arm Muscles Anatomy

The main muscles of the arm are:...

Arm Bones

The bones of the arm consist of the humerus in the upper arm and the radius and ulna in the forearm. The arm’s bones enable movement in the shoulder, elbow, wrist, and fingers, which are essential for daily activities....

Blood Supply of Arm

The blood supply to the arm mainly comes from the brachial artery, a major artery of the upper limb. Blood supply to the arm...

Nerve Supply of Arm

The nerve supply to the arm is provided by branches of the brachial plexus, a network of nerves originating from the spinal cord in the neck. The nerve supply to the arm in detail is given below:...

Functions of the Arm

Functions of the Arm include:...

Conclusion – Arm

The arm, or upper extremity, is a functional unit of the upper body that consists of three sections: the upper arm, forearm, and hand. It contains 30 bones, nerves, blood vessels, and muscles. The arm’s muscles allow for fine motor movements, such as wiggling fingers or fastening a button, as well as larger movements, such as straightening the elbow or raising the arms above the head....

FAQs on Arm

Why is it Called an Arm?...

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