Clavipectoral fascia

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Clavipectoral fascia
Pectoralis minor.svg
Details
Identifiers
Latin fascia clavipectoralis
TA98 A04.4.01.018
TA2 2318
FMA 37340
Anatomical terminology

The clavipectoral fascia (costocoracoid membrane; coracoclavicular fascia) is a strong fascia situated under cover of the clavicular portion of the pectoralis major.

Contents

It occupies the interval between the pectoralis minor and subclavius, and protects the axillary vein and artery, and axillary nerve. [1]

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 deep 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 membrane.

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 clavipectoral fascia is pierced by the cephalic vein, thoracoacromial artery and vein, lymphatics and lateral pectoral nerve.

See also

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<span class="mw-page-title-main">Deltoid muscle</span> Shoulder muscle

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  1. anterior or clavicular part
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<span class="mw-page-title-main">Pectoralis major</span> Main human chest muscle

The pectoralis major is a thick, fan-shaped or triangular convergent muscle of the human chest. It makes up the bulk of the chest muscles and lies under the breast. Beneath the pectoralis major is the pectoralis minor muscle.

<span class="mw-page-title-main">Pectoralis minor</span> Human chest muscle that protracts the shoulder

Pectoralis minor muscle is a thin, triangular muscle, situated at the upper part of the chest, beneath the pectoralis major in the human body. It arises from ribs III-V; it inserts onto the coracoid process of the scapula. It is innervated by the medial pectoral nerve. Its function is to stabilise the scapula by holding it fast in position against the chest wall.

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<span class="mw-page-title-main">Axillary artery</span> Large blood vessel bringing oxygenated blood to the thorax

In human anatomy, the axillary artery is a large blood vessel that conveys oxygenated blood to the lateral aspect of the thorax, the axilla (armpit) and the upper limb. Its origin is at the lateral margin of the first rib, before which it is called the subclavian artery.

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<span class="mw-page-title-main">Subclavius muscle</span> Muscle between the clavicle and first rib

The subclavius is a small triangular muscle, placed between the clavicle and the first rib. Along with the pectoralis major and pectoralis minor muscles, the subclavius muscle makes up the anterior axioappendicular muscles, also known as anterior wall of the axilla.

<span class="mw-page-title-main">Thoracoacromial artery</span> Blood vessel

The thoracoacromial artery is a short trunk that arises from the second part of the axillary artery, its origin being generally overlapped by the upper edge of the pectoralis minor.

<span class="mw-page-title-main">Medial pectoral nerve</span>

The medial pectoral nerve is (typically) a branch of the medial cord of the brachial plexus and is derived from spinal nerve roots C8-T1. It provides motor innervation to the pectoralis minor muscle, and the lower half of the pectoralis major muscle. It runs along the inferior border of the pectoralis minor muscle.

<span class="mw-page-title-main">Lateral pectoral nerve</span>

The lateral pectoral nerve arises from the lateral cord of the brachial plexus, and through it from the C5-7.

<span class="mw-page-title-main">Suboccipital triangle</span>

The suboccipital triangle is a region of the neck bounded by the following three muscles of the suboccipital group of muscles:

<span class="mw-page-title-main">Pectoral fascia</span>

The pectoral fascia is a thin lamina, covering the surface of the pectoralis major, and sending numerous prolongations between its fasciculi: it is attached, in the middle line, to the front of the sternum; above, to the clavicle; laterally and below it is continuous with the fascia of the shoulder, axilla, and thorax.

<span class="mw-page-title-main">Carotid triangle</span>

The carotid triangle is a portion of the anterior triangle of the neck.

<span class="mw-page-title-main">Muscular triangle</span>

The inferior carotid triangle, is bounded, in front, by the median line of the neck from the hyoid bone to the sternum; behind, by the anterior margin of the sternocleidomastoid; above, by the superior belly of the omohyoid.

<span class="mw-page-title-main">Clavipectoral triangle</span> Anatomical region

The clavipectoral triangle is an anatomical region found in humans and other animals. It is bordered by the following structures:

<span class="mw-page-title-main">Outline of human anatomy</span> Overview of and topical guide to human anatomy

The following outline is provided as an overview of and topical guide to human anatomy:

References

  1. Crepaz‐Eger, Ulrich; Lambert, Simon; Hörmann, Romed; Knierzinger, Dominik; Brenner, Erich; Hengg, Clemens (2021-10-25). "The anatomy and variation of the coracoid attachment of the subclavius muscle in humans". Journal of Anatomy. 240 (2): 376–384. doi:10.1111/joa.13548. ISSN   0021-8782. PMC   8742971 .

PD-icon.svgThis article incorporates text in the public domain from page 437 of the 20th edition of Gray's Anatomy (1918)