muscle21

trapezius action
- extends head; upper elevates
- while lower depresses scapula
trapezius origin
- occipital bone
- vertebral spines of
- cervical and thoracic vertebrae
trapezius insertion

acromion and spine of scapula (R&L)
external intercostal-action
- elevates rib cage
- aids in inspiration
external intercostal-origin

inferior border of superior rib above
external intercostals-insertion

superior border of inferior rib below
internal intercostals-action
- depresses rib cage
- aids in expiration
internal intercostals-origin

superior border of inferior rib below
internal intercostals-action

inferior border of superior rib above
diaphragm-action

inspiration
retus abdominis-action
- flexes vertebral column
- increases abdominal pressure
retus abdominis-origin
- pubic crest of pubic bone
- pubic symphysis between pubic bone
rectus abdominis-action

xiphoid process of sternum

Author

Anonymous

110222

Card Set

muscle21

Description

muscle21

Updated

2011-10-19T15:51:36Z