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Abdominal Musculature
NASM - Isolated and integrated functions of the major muscules of the kinetic chain - Abdominal Musculature
5
Anatomy
Not Applicable
11/29/2010

Additional Anatomy Flashcards

 


 

Cards

Term

Abdominal Musculature

 

 

 

 

Rectus Abdominis

Definition

 

Origin - Pubic symphysis of the pelvis.

Insertion - Ribs 5-7.  Xiphoid process of the sternum.

Isolated Function - Concentrically accelerates spinal flexion, lateral flexion, and rotation.

Integrated Function - Eccentrically decelerates spinal extension, lateral flexion, and rotation.  Isometrically stabilizes the lumbo-pelvic-hip complex.

 

Term

Abdominal Musculature

 

 

 

 

External Oblique

Definition

Origin - External surface of ribs 4-12.

Insertion - Anterior iliac crest of the pelvis, linea alba, and contralateral rectus sheaths.

Isolated Function - Concentrically accelerates spinal flexion, lateral flexion, and contralateral rotation.

Integrated Function - Eccentrically decelerates spinal extension, lateral flexion, and rotation.  Isometrically stabilizes the lumbo-pelvic-hip complex.

Term

Abdominal Musculature

 

 

 

 

Transversus Abdominis

Definition

Origin - Ribs 7-12, anterior two thirds of the iliac crest of the pelvis, and thoracolumbar fascia.

Insertion - Lineae alba and contralateral rectus sheaths.

Isolated Function - Increases intra-abdominal pressure.  Supports the abdominal viscera.

Integrated Function - Isometrically stabilizes the lumbo-pelvic-hip complex.

Term

Abdominal Musculature

 

 

 

 

Diaphragm

Definition

 

Origin - Costal part:  inner surfaces of the cartilages and adjacent bony regions of ribs 6-12.  Sternal part:  posterior side of the xiphoid process.  Crural (lumbar) part:  (1)  two aponeurotic arches cover the external surfaces of the quadratus lumboru and psoas major;  external surface of the quadratus lumborum and psoas major;  (2)  right and left crus, originating from the bodies of L1-L3 and their intervertebral disks.

Insertion - Central tendon.

Isolated Function - Concentrically pulls the central tendon inferiorly, increasing the volume in the thoracic cavity.

Integrated Function - Stabilizes the lumbo-pelvic-hip complex.

 

Term

Abdominal Musculature

 

 

 

 

Internal Obliques

Definition

Origin - Anterior tow thirds of the iliac crest of the pelvis and thoracolumnbar fascia.

Insertion - Ribs 9-12, linea alba, and contralateral rectus sheaths.

Isolated Function - Concentrically accelerates spinal flexion, lateral flexion, and ipsilateral rotation.

Integrated Function - Eccentrically decelerates spinal extension, rotation, and lateral flexion.  Isometrically stabilizes the lubmo-pelvic-hip complex.

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