Muscular system By Jamal Ahmad

1. Muscles of
Chest
Muscles of Ab
dominal wall

2. •FLAT MUS
CLES
• External obliq
ue
• Internal obliq
ue
• Transverse ab
dominis
•VERTICAL
MUSCLES
•Rectus abd
ominis
•Pyramidalis
•

3. • Flat muscles at Anteromedial
aspect form broad flat tendon
called aponurosis that cover r
ectus abdominis
• In the midline all fibers of tend
ons entwined to form a long fi
ber called linea alba that run f
rom xiphoid process of sternu
m to pubic symphysis

4. •External oblique fibers run
inferiomedialy
•5-7 ribs
•Iliac crest and pubic tubercle
•Contraletral rotation of torso
•Thoracolumbar (T7-T11) and
Subcostal (T12) nerves

5. •Internal oblique
• Fibers run superiomedialy
• Iliac crest, Inguinal ligament limbo dorsal fasci
a
• 10-12 ribs
• Contraction of abdomen compres the abdomen
uniletraly contraction and ipsiletral rotation of t
orso
• Thoracoabdominal (T6-T12) Subcostal(T12) ne
rves

6. • Transverse abdominis
• Inguinal ligament costal cartilage
7-12 Iliac crest and Thoracolumb
ar fascia
• Conjoint tendon xiphoid process
linea alba and pubic tubercle
• Compress the abdomen
• Same as internal oblique

7. • Rectus abdominis
• On pair sepparrated by linea alb
a letral border form linea semilu
naris. Muscle has transverse ten
denious section
• Pubic crest
• Xiphoid process and costal cartilage 5-
7
• Assist the flat muscles

8. •Pyramidalis
•Pubic crest and pubic symp
hysis
•Lenea alba
•Tense the lenea alba
•Subcostal (T12)