Abdominal Musculature Flashcards
1
Q
Rectus Abdominis
A
★ 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 LPHC
2
Q
External Oblique
A
★ 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 LPHC
3
Q
Internal Oblique
A
★ 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, lateral flexion, and rotation.
Isometrically stabilizes the LPHC
4
Q
Transverse Abdominis
A
★ Insertion Lineae alba and contralateral rectus sheaths ★ Isolated function Increases intra-abdominal pressure Supports the abdominal viscera ★ Integrated function Isometrically stabilizes the LPHC
5
Q
Diaphragm
A
★ Insertion Central tendon ★ Isolated function Concentrically pulls the central tendon inferiorly, increasing volume in the thoracic cavity ★ Integrated function Stabilizes the LPHC
