Clavipectoral fascia
Encyclopedia
The clavipectoral fascia (costocoracoid membrane; coracoclavicular fascia) is a strong fascia
situated under cover of the clavicular portion of the Pectoralis major.
It occupies the interval between the Pectoralis minor and Subclavius, and protects the axillary
vessels and nerves.
Traced upward, it splits to enclose the Subclavius, and its two layers are attached to the clavicle
, one in front of and the other behind the muscle; the latter layer fuses with the deep cervical fascia
and with the sheath of the axillary vessels.
Medially, it blends with the fascia covering the first two intercostal spaces, and is attached also to the first rib medial to the origin of the Subclavius.
Laterally, it is very thick and dense, and is attached to the coracoid process.
The portion extending from the first rib to the coracoid process is often whiter and denser than the rest, and is sometimes called the costocoracoid ligament.
Below this it is thin, and at the upper border of the Pectoralis minor it splits into two layers to invest the muscle; from the lower border of the Pectoralis minor it is continued downward to join the axillary fascia, and lateralward to join the fascia over the short head of the Biceps brachii.
The coracoclavicular fascia is pierced by the cephalic vein
, thoracoacromial artery
and vein, lymphatics, and lateral pectoral nerve
.
Fascia
A fascia is a layer of fibrous tissue that permeates the human body. A fascia is a connective tissue that surrounds muscles, groups of muscles, blood vessels, and nerves, binding those structures together in much the same manner as plastic wrap can be used to hold the contents of sandwiches...
situated under cover of the clavicular portion of the Pectoralis major.
It occupies the interval between the Pectoralis minor and Subclavius, and protects the axillary
Axillary
Axillary means "related to the axilla "."Axillary" may refer to:* Axillary artery* Axillary vein* Axillary nerve* Axillary bud...
vessels and nerves.
Traced upward, it splits to enclose the Subclavius, and its two layers are attached to the clavicle
Clavicle
In human anatomy, the clavicle or collar bone is a long bone of short length that serves as a strut between the scapula and the sternum. It is the only long bone in body that lies horizontally...
, one in front of and the other behind the muscle; the latter layer fuses with the deep cervical fascia
Deep cervical fascia
The deep cervical fascia lies under cover of the Platysma, and invests the neck; it also forms sheaths for the carotid vessels, and for the structures situated in front of the vertebral column...
and with the sheath of the axillary vessels.
Medially, it blends with the fascia covering the first two intercostal spaces, and is attached also to the first rib medial to the origin of the Subclavius.
Laterally, it is very thick and dense, and is attached to the coracoid process.
The portion extending from the first rib to the coracoid process is often whiter and denser than the rest, and is sometimes called the costocoracoid ligament.
Below this it is thin, and at the upper border of the Pectoralis minor it splits into two layers to invest the muscle; from the lower border of the Pectoralis minor it is continued downward to join the axillary fascia, and lateralward to join the fascia over the short head of the Biceps brachii.
The coracoclavicular fascia is pierced by the cephalic vein
Cephalic vein
In human anatomy, the cephalic vein is a superficial vein of the upper limb.It communicates with the basilic vein via the median cubital vein at the elbow and is located in the superficial fascia along the anterolateral surface of the biceps brachii muscle.Superiorly the cephalic vein passes...
, thoracoacromial artery
Thoracoacromial artery
The thoracoacromial artery is a short trunk, which arises from the forepart of the axillary artery, its origin being generally overlapped by the upper edge of the Pectoralis minor.-Branches:...
and vein, lymphatics, and lateral pectoral nerve
Lateral pectoral nerve
The lateral pectoral nerve arises from the lateral cord of the brachial plexus, and through it from the fifth, sixth, and seventh cervical nerves....
.