Abdominals

Question 1

Rectus Abdominis Origin and Insertion

Answer 1

Origin- Pubic Symphysis of pelvis

Insertion- Ribs 5-7, xiphoid process of the sternum

Question 2

Rectus Abdominis Isolated and Integrated Function

Answer 2

Isolated Function- Concentrically accelerates spinal flexion, lateral flexion, and rotation
Integrated Function- Eccentrically decelerates spinal extension, lateral flexion, and rotation, isometrically stabilizes the LPHC

Question 3

External Oblique Origin and Insertion

Answer 3

Origin- External surface ribs 4-12

Insertion- Anterior iliac crest or pelvis, linea alba, and contralateral rectus sheaths

Question 4

External Oblique Isolated and Integrated Function

Answer 4

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

Question 5

Internal Oblique Origin and Insertion

Answer 5

Origin-Anterior two thirds of the iliac crest of the pelvis and thoracolumbar fascia
Insertion- Ribs 9-12, linea alba, and contralateral rectus sheaths

Question 6

Internal Oblique Isolated and Integrated Function

Answer 6

Isolated Function- Concentrically accelerates spinal flexion and ipsilateral rotation
Integrated Function-Eccentrically decelerates spinal extension, rotation, and lateral flexion, isometrically stabilizes the LPHC

Question 7

TA Origin and Insertion

Answer 7

Origin- Ribs 7-12, anterior two thirds of iliac crest of pelvis, and thoracolumbar fascia
Insertion- Lineae alba and contralateral rectus sheaths

Question 8

TA Isolated and Integrated Function

Answer 8

Isolated Function- Increases intra-abdominal pressure, supports the abdominal viscera
Integrated Function- isometrically stabilizes the LPHC

Question 9

Diaphragm Origin and Insertion

Answer 9

Origin- Costal part: inner surfaces of the cartilages and adjacent bony regions of ribs 6-12, Sternal Part: posterior side of the xiphoid process, Lumbar part: (1) two aponeurotic arches covering the external surfaces of the QL and psoas major (2) right and left crus, originating from the bodies of L1-L3 and their intervertebral disks
Insertion- Cental tendon

Question 10

Diaphragm Isolated and Integrated Function

Answer 10

Isolated Function- concentrically pulls the central tendon inferiorly, increasing the volume in the thoracic cavity
Integrated Function- stabilizes the LPHC