What do I need to know about upper limbs?

What do I need to know about upper limbs?

The upper extremity or arm is a functional unit of the upper body. It consists of three sections, the upper arm, forearm, and hand. It extends from the shoulder joint to the fingers and contains 30 bones. It also consists of many nerves, blood vessels (arteries and veins), and muscles.

What are the major sections of the upper limb?

The upper limb is divided into three regions. These consist of the arm, located between the shoulder and elbow joints; the forearm, which is between the elbow and wrist joints; and the hand, which is located distal to the wrist.

What are the functions of the upper limbs?

The primary purpose of the upper limb is to move the hand around the body during the activities of life. The shoulder girdle provides a wide range of motion—exceeding a hemisphere–so that the hand may reach in all directions.

What are the four main bones of the upper limb?

In this section, learn more about the anatomy of the bones of the upper limb – the clavicle, scapula, humerus, radius, ulna and hand bones.

What five structures do the upper limbs consist of?

For anatomists, the upper limb consists of the arm (the upper arm), the forearm (the lower arm), and the hand. The arm consists of a single bone, the humerus. The forearm consists of two bones, the ulna and radius. And the hand consists of 27 bones, which are grouped into the phalanges, metacarpals, and carpals.

What is primarily responsible for attaching the upper limb to the body?

The pectoral girdle, consisting of the clavicle and the scapula, attaches each upper limb to the axial skeleton. The clavicle is an anterior bone whose sternal end articulates with the manubrium of the sternum at the sternoclavicular joint.

What is the upper arm called?

Humerus. The humerus is a long bone in the upper arm. It’s located between the scapula and the elbow joint. Many muscles and ligaments in the arm are attached to the humerus.

What are upper limbs?

The upper limbs or upper extremities are the forelimbs of an upright-postured tetrapod vertebrate, extending from the scapulae and clavicles down to and including the digits, including all the musculatures and ligaments involved with the shoulder, elbow, wrist and knuckle joints.

What are the 8 appendicular bones?

Structure and Function

• Upper Limb.
• Shoulder girdle: Clavicle. Scapula. Arm. Humerus. Forearm. Radius. Ulna. Wrist or carpal bones. Scaphoid. Lunate. Triquetrum. Pisiform. Trapezium.
• Lower Limb.
• Pelvic girdle (hip or coxal bone) Ilium. Ischium. Pubis. Thigh. Femur. Leg. Tibia. Fibula. Tarsal bones. Talas. Calcaneus. Cuboid.

What is the longest bone in the body?

The femur bone
The femur bone is the longest and strongest bone in the body.

How many muscles do we have in the upper limb?

Upper Arm. There are four muscles in the upper arm split into an anterior and posterior compartment.

What are the 4 major muscles of the arm?

The muscles that make up the upper arm include the biceps brachii, triceps brachii, brachialis, coracobrachialis, and the anconeus.

What are the 7 main areas of the upper limb?

There are 7 main areas covered in the upper limb; The muscles, bones, joints, nerves, blood and lymphatic supply, anatomical areas, and the structures in the hand.

What are the bones of upper limb for first year students?

I hope it will be useful for the first year students. All the bones of upper limb are important as far as the exams are concerned. Clavicle, humerus, radius, ulna and wrist bones, you can’t leave anything. Learn to identify the bone, hold it in anatomical position, the attachments of muscles and peculiar features.

Why do we have muscles in the upper limb?

There are a large number of muscles in the upper limb, these are involved in allowing us to move and perform important tasks such as gripping with our hands or raising our arms, they also provide extra stability around the shoulder joint.

How do the nerves of the upper limb work?

The nerves of the upper limb arise from a complex arrangement of nerve fibers known as the brachial plexus; These nerves give sensation to our upper limb, as well as innervating the muscles, allowing us to move them at will.