外斜 - Musculus obliquus externus abdominis

结构高低级

General terms > Myology > Muscles of abdomen > 外斜

下层结构


翻译

描述

The obliquus externus abdominis is divided in two different parts (not listed in the Vth NAV) in carnivores:

 

A costal part (Obliquus Externus Abdominis (Pars Costalis))

Origin: From the middle parts of the fourth to twelfth ribs and the adjacent trunk fascia.

Insertion: Pubic symphyses and xiphoid process via the linea alba.

Action: Along with other abdominal muscles, compression of the abdominal viscera. This action, known as abdominal press, aids in such vital functions as expiration, urination, defecation, and parturition. Flexion of the vertebral column when fellow muscles contract. Lateral bending of the vertebral column.

Nerve: Lateral branches of the last eight or nine intercostales and the lateral branches of the costoabdominalis, iliohypogastricus, and ilioinguinalis.

 

A lumbar part (Obliquus Externus Abdominis (Pars Lumbalis))

Origin: Last rib.

Insertion: Into twelfth rib.

Action: Along with other abdominal muscles, compression of the abdominal viscera. This action, known as abdominal press, aids in such vital functions as expiration, urination, defecation, and parturition. Flexion of the vertebral column when fellow muscles contract. Lateral bending of the vertebral column.

Nerve: Lateral branches of the last eight or nine intercostales and the lateral branches of the costoabdominalis, iliohypogastricus, and ilioinguinalis.


Text by Antoine Micheau, MD - Copyright IMAIOS

影像

下载vet-Anatomy

手机和平板用户可以在Appstore或GooglePlay下载

vet-Anatomy 在Appstore vet-Anatomy 在Googleplay