Where is forearm

The human hand and wrist are comprised of three different bone groups. The carpals are…. Health Conditions Discover Plan Connect. Read this next. Thumb Medically reviewed by the Healthline Medical Network. Epiglottis Medically reviewed by the Healthline Medical Network. Medically reviewed by William Morrison, M.

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Retinaculum Medically reviewed by the Healthline Medical Network. Elbow Medically reviewed by the Healthline Medical Network. The epiglottis is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx, or voice box.

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Wrist retinacula…. The elbow is one of the largest joints in the body. In conjunction with the shoulder joint and wrist, the elbow gives the arm much of its versatility…. The distal phalanges are one of three types of finger bones.

The human hand and wrist are comprised of three different bone groups. The carpals are…. The jejunum is one of three sections that make up the small intestine. Learn about its function and anatomy, as well as the conditions that can affect…. Health Conditions Discover Plan Connect. Medically reviewed by William Morrison, M. Each arm consists of four main parts: upper arm forearm wrist hand Read on to learn more about the bones, muscles, nerves, and vessels of the upper arm and forearm, as well as common arm problems you may encounter.

Anatomy and function of arm bones and joints. Upper arm The upper arm includes the shoulder as well as the area between the shoulder and elbow joint. The bones of the upper arm include the: Scapula. The scapula is also called the shoulder blade. It attaches the arm to the torso. The clavicle is also called the collarbone. Like the scapula, it attaches the arm to the torso.

It also helps to distribute force from the upper part of the arm to the rest of the skeleton. The humerus is a long bone in the upper arm. Many muscles and ligaments in the arm are attached to the humerus. The upper arm also contains several joints, including the: Acromioclavicular joint. The scapula and the clavicle meet at this joint. Glenohumeral joint. This is the joint where the scapula and humerus meet.

Sternoclavicular joint. The clavicle connects to the sternum breastbone at this joint. Forearm The forearm is the area between the elbow joint and the wrist.

Its two major bones are the radius and the ulna: Radius. The radius is located on the side of the forearm closest to the thumb. It twists around the ulna and can change its position depending on how the hand is moved. There are many muscles attached to the radius that aid in movement of the elbow, wrist, and finger joints. The ulna runs parallel to the radius. Elbow joint The elbow joint is where the humerus bone of the upper arm connects with the radius and ulna bones in the forearm. The elbow joint is actually composed of three separate joints: Ulnohumeral joint.

This is where the humerus connects to the ulna. Radiocapitellar joint. At this joint, the radius connects to an area of the humerus called the capitellum. Proximal radioulnar joint. This joint connects the radius and ulna, allowing for rotation of the hands. Anatomy and function of upper arm muscles. This movement brings two body parts closer together, such as the forearm and upper arm.

This movement increases the space between two body parts. An example of this is straightening the elbow. This refers to moving a body part away from the center of the body, such as lifting the arm out and away from the body.

This refers to moving a body part toward the center of the body, such as bringing the arm back in so it rests along the torso. Anterior compartment The anterior compartment is located in front of the humerus, the main bone of the upper arms. The muscles of the anterior compartment include: Biceps brachii. Often referred to as the biceps , this muscle contains two heads that start at the front and back of the shoulder before joining together at the elbow. The end near the elbow flexes the forearm, bringing it toward the upper arm.

The two heads near the shoulder help with flexion and adduction of the upper arm. This muscle lies underneath the biceps. It acts as a bridge between the humerus and ulna, one of the main bones of the forearm. This muscle is located near the shoulder.

It allows adduction of the upper arm and flexion of the shoulder. It also helps to stabilize the humerus within the shoulder joint. Posterior compartment The posterior compartment is located behind the humerus and consists of two muscles: Triceps brachii.

This muscle , usually referred to as the triceps, runs along the humerus and allows for the flexion and extension of the forearm. It also helps to stabilize the shoulder joint. This is a small, triangular muscle that helps to extend the elbow and rotate the forearm. Anatomy and function of forearm muscles. The term forearm is used in anatomy to distinguish it from the arm, a word which is most often used to describe the entire appendage of the upper limb, but which in anatomy, technically, means only the region of the upper arm, whereas the lower "arm" is called the forearm.

The forearm contains two long bones, the radius and the ulna, forming the radioulnar joint. The interosseous membrane connects these bones. Ultimately, the forearm is covered by skin, the anterior surface usually being less hairy than the posterior surface. IMAIOS and selected third parties, use cookies or similar technologies, in particular for audience measurement. Cookies allow us to analyze and store information such as the characteristics of your device as well as certain personal data e.

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