What is the posterior forearm?

The posterior compartment of the forearm (or extensor compartment) contains twelve muscles which are chiefly responsible for extension of the wrist and digits, and supination of the forearm. It is separated from the anterior compartment by the interosseous membrane between the radius and ulna.

Where is the posterior forearm?

The posterior compartment of the forearm is between the elbow and wrist joints, contains 12 muscles divided into superficial and deep groups (Figs. 22.1 and 22.2), and is supported by the radius and ulna (see Chapter 21).

Is the forearm posterior or anterior?

In cross-section, the forearm can be divided into two fascial compartments. The posterior compartment contains the extensors of the hands, which are supplied by the radial nerve. The anterior compartment contains the flexors and is mainly supplied by the median nerve.

FMA 9663
Anatomical terminology

What is the posterior region of arm?

The posterior compartment of the arm is also known as the “extensor compartment“, as its main action is extension. The muscles of this compartment are the triceps brachii and anconeus muscle and these are innervated by the radial nerve. Their blood supply is from the profunda brachii.

What is the dorsal forearm?

The dorsal compartment of the forearm contains nine muscles: four belong to the superficial group (extensor digitorum communis, extensor digiti minimi, extensor carpi ulnaris and anconeus) and five to the deep group (supinator, abductor longus, extensor pollicis brevis, extensor pollicis longus, and extensor indices).

What artery supplies blood to the posterior forearm?

posterior interosseous artery

The posterior interosseous artery supplies blood to the ulna, abductor pollicis longus, supinator, and extensor muscles of the forearm.

How do you get posterior forearm muscles?

Youtube quote:Because it's most active when the forearm is in mid pronation. Mid-supination remember that biceps brachii is most active during elbow flexion when the forearms. Are in complete supination.

What is anterior forearm?

The superficial anterior forearm muscles are a group of five muscles located in the anterior (flexor) compartment of the forearm. These muscles include the pronator teres, flexor carpi radialis, flexor carpi ulnaris, palmaris longus and flexor digitorum superficialis.

What muscles are in the posterior compartment of the forearm?

The posterior compartment of the forearm (Extensor compartment of forearm) contains the following muscles:

  • Brachioradialis.
  • Superficial. extensor carpi radialis longus. extensor carpi radialis brevis. …
  • Intermediate. extensor digitorum. extensor digiti minimi.
  • Deep. abductor pollicis longus. extensor pollicis brevis.

Which nerve Innervates the posterior forearm muscles?

Superficial posterior forearm muscles

Definition and function A group of muscles situated in the superficial posterior compartment of the forearm that produce movements of the forearm, hand and fingers
Innervation Radial nerve
Blood supply Deep brachial artery, radial artery, common interosseous artery

Is ventral the same as posterior?

On a human body, dorsal (i.e., posterior) refers to the back portion of the body, whereas ventral (i.e., anterior) refers to the front part of the body.

Where is the dorsal forearm located?

Youtube quote:Anatomy of the radial and the dorsal side of the forearm. There are 12 muscles arranged into three groups three on the radial. Side superficial four in the dorsal. Side superficial.

What is the posterior of the body?

Posterior or dorsal – back (example, the shoulder blades are located on the posterior side of the body). Medial – toward the midline of the body (example, the middle toe is located at the medial side of the foot).

Where is the posterior?


Posterior (or dorsal) Describes the back or direction toward the back of the body.

Does posterior mean above?

Anterior: refers to the front of the body. Posterior: term for the back of the body. Superior: refers to body parts above or towards the head.

What is the difference between the anterior and posterior?

The difference between anterior and posterior is simple: anterior means near or towards the front of something and posterior means near or towards the back.

Is posterior below?

Recall that the word anterior means that something is towards the front of the body, while the word posterior means that something is towards the back of the body. We also have the term superior, which means towards the head or above something and the word inferior, which means towards the feet or below something.

What does posterior mean in biology?

the back side

Posterior is often used as a technical term in biology and medicine to refer to the back side of things, and is the opposite of anterior, which refers to the front side.