Arm

Why is it Called an Arm?

It’s called an “arm” due to its function as a limb extending from the shoulder to the hand, enabling manipulation, movement, and support.

How Many Bones are in an Arm?

The arm consists of three bones: the humerus in the upper arm and the radius and ulna in the forearm.

What is the Longest Bone in the Arm?

The humerus is the longest bone in the arm, extending from the shoulder to the elbow.

How Many Joints are in the Arm?

There are three joints in the arm: the shoulder (glenohumeral) joint, the elbow joint, and the radioulnar joints.

What is the Name of the Muscle in the Arm?

The biceps brachii is a prominent muscle in the arm responsible for flexing the elbow and supinating the forearm.

What is the Lower Arm called?

The lower arm is called the forearm, consisting of the radius and ulna bones.



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

Similar Reads

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

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