Pectoral nerve

The pectoral nerve (plural pectoral nerves , "chest nerves") refers to two nerves of the brachial plexus . In humans, a distinction is made between two pectoral nerves, the lateral pectoral nerve (lateral pectoral nerve) and the medial pectoral nerve ( pectoral nerve located towards the center). There are two groups of domestic animals , the Nervi pectorales craniales (anterior pectoral nerves) and the Nervi pectorales caudales (posterior pectoral nerves).

Nervi pectorales of man

In humans, the lateral pectoral nerve and the medial pectoral nerve arise from the anterior rami of the spinal nerves between the fifth neck segment and the first chest segment (C5 - Th1) of the spinal cord . They pull behind the collarbone through the brachial plexus to the two chest muscles , the pectoralis major and pectoralis minor muscles , and innervate them .

Nervi pectorales of domestic animals

The two nervi pectorales craniales arise from the posterior neck segments (C6-C8) of the spinal cord. They innervate the two superficial chest muscles ( muscles pectorales superficiales ).

The three to four caudal pectoral nerves come from the C8-Th2 segments and innervate the deep pectoral muscle ( pectoralis profundus muscle ).

literature

• Franz-Viktor Salomon: nervous system, systema nervosum. In: Franz-Viktor Salomon, Hans Geyer, Uwe Gille (Ed.): Anatomy for veterinary medicine. Enke, Stuttgart 2004, ISBN 3-8304-1007-7 , pp. 464-577.