Fascial compartments of arm
| Fascial compartments of arm | |
|---|---|
 Cross section showing the fascial compartments of the upper and lower arm | |
| Identifiers | |
| TA98 | A04.6.01.001 |
| FMA | 265176 |
| Anatomical terminology | |
The fascial compartments of arm refers to the specific anatomical term of the compartments within the upper segment of the upper limb (the arm) of the body. The upper limb is divided into two segments, the arm and the forearm. Each of these segments is further divided into two compartments which are formed by deep fascia – tough connective tissue septa (walls). Each compartment encloses specific muscles and nerves.
The compartments of the arm are the anterior compartment of the arm and the posterior compartment of the arm, divided by the lateral and the medial intermuscular septa. The compartments of the forearm are the anterior compartment of the forearm and posterior compartment of the forearm.
Intermuscular septa
The lateral intermuscular septum extends from the lower part of the crest of the
The medial intermuscular septum, is thicker than the lateral intermuscular septum. It extends from the lower part of the crest of the
It is perforated by the ulnar nerve, the superior ulnar collateral artery, and the posterior branch of the inferior ulnar collateral artery.
Anterior compartment
The anterior compartment of the arm is also known as the flexor compartment of the arm as its main action is that of flexion. The anterior compartment is one of the two anatomic compartments of the upper arm, the other being the posterior compartment.
The compartment contains three muscles; the
Posterior compartment
The posterior compartment of the arm is also known as the "extensor compartment", as its main action is
The muscles of this compartment are the
The triceps brachii is a large muscle containing three heads a lateral, medial, and middle. The anconeus is a small muscle that stabilizes the elbow joint during movement. Some
See also
- Anterior compartment of the forearm
- Posterior compartment of the forearm
- Compartment syndrome
- Fascia
- Fascial compartments of leg
References
- ^ lesson4nervesofant&postarm at The Anatomy Lesson by Wesley Norman (Georgetown University)
External links
- lesson4nervesofant&postarm at The Anatomy Lesson by Wesley Norman (Georgetown University)
- elbow/muscles/muscles2 at the Dartmouth Medical School's Department of Anatomy
- Dissection at tufts.edu
- https://web.archive.org/web/20080103065905/http://anatomy.med.umich.edu/musculoskeletal_system/axilla_ans.html
