class

1. ABDOMINAL THEORY

2. SUPERFICIAL MUSCLES
 RECTUS ABDOMINUS –
Abdominal muscles with
vertical fibers
 Origin –Pubic crest and
Pubic symphysis
 Insertion-Costal cartilages
of ribs 5 to 7,xiphoid
process of sternum
 Movements-Trunk
flexion,Assists in trunk
rotation,trunk lateral flexion

3.  EXTERNAL OBLIQUE
– Diagonally placed
muscle fibers lateral to
medial
 Origin – External
surface or Ribs 5th to
12th
 Insertion – Anterior illiac
crest and abdominal
aponeurosis
 Movements-Trunk
lateral flexion and Trunk
rotation to opposite side

4.  INTERNAL OBLIQUE –
Diagonally placed muscle
fibers medial to lateral
 Origin-Illiac
crest,Thoracolumbar fascia
 Insertion- Costal cartilages of
ribs 8 to 12 and abdominal
aponeurosis
 Trunk lateral flexion and Trunk
rotation to same side

5. Deep muscles
TRANSVERSUS
ABDOMINUS – Tranversely
placed muscle fibers of
abdominals
Origin –Anterior illiac
crest,Thoracolumbar fascia
and cartilages of ribs 6 to 12
Insertion-abdominal
aponeurosis,xiphoid process
and pubic symphysis
 Movements-Forced
expiration,Abdominal
compression

6. Pelvic floor muscles