Muscles of the Abdomen (Groups, Origin, Insertion, Function)

Content
Introduction 0:00
Division of the Abdominal Muscles 0:08
Quadratus Lumborum 1:27
Pyramidalis 1:53
Rectus Abdominis 2:22
Transverse Abdominal Muscle 2:52
Internal Oblique 3:49
Cremaster Muscle 4:21
External Oblique 5:00
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Muscles of the Abdomen
- Lateral Group
○ External Oblique
○ Internal Oblique
○ Transverse Abdominal
- Anterior Group
○ Rectus Abdominis
○ Pyramidalis
- Posterior Group
○ Quadratus Lumborum
Posterior Group:
Quadratus Lumborum
musculus wadratus lumborum
Origin:
Iliac Crest
Iliolumbar Ligament
Insertion:
12th Rib
Costal process of L1-L4
Function:
Extension of trunk
(Bilteral Contraction)
Lateroflexion of trunk
(Unilateral Contraction)
Anterior Group:
Pyramidalis
musculus pyramidalis
O: Superior Pubic Ramus
I: Linea Alba
F:
Tenses linea alba and strengthens the rectus sheath
Rectus Abdominis
musculus rectus abdominis
O:
Xiphoid Process
Costal Cartilage of 5th - 7th Rib
I:
Body of Pubis between pubic symphysis and pubic tubercle
F:
Ventral Flexion of Trunk
Expiration Muscle
Lateral Group
Transverse Abdominal
musculus transversus abdominis
O:
Inguinal ligament
Iliac Crest
Thoracolumbar Fascia
7th - 12th Rib
I: Linea Alba
F:
Rotation of the trunk
Expiration Muscle
Internal Oblique
musculus obliquus internus abdominis
O:
Inguinal ligament
Iliac Crest
Thoracolumbar Fascia
I:
Linea Alba
10th - 12th Rib
F:
Ventral flexion of trunk (Bilateral Contraction)
Tilts the trunk to the side
(Unilateral Contraction)
Expiration Muscle
Cremaster
musculus cremaster
- Formed by Internal Oblique and Transverse Abdominal Muscles
External Oblique
musculus obliquus externus abdominis
O: 5th - 12th Ribs
I:
Linea Alba
Iliac Crest
F:
Ventral flexion of trunk (Bilateral Contraction)
Tilts the trunk to the side
(Unilateral Contraction)
Expiration Muscle

[@TaimTalksMed]

A minor mistake in the video; Origin and Insertion points of Rectus Abdominis is interchanged. They should be opposite. Apologize for the mistake!

[@sonuabhi9843]

Okay 👍

[@josetrujillo738]

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[@tarnh12]

Excellent and simple explanation!

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[@rajaroychoudhuri7451]

Kindly correct rictus abdominis origin and insertion points btw great video sir

[@radwandawod1051]

Important job with valuable information👍💐💕🌹

[@TaimTalksMed]

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[@taherefarahani9768]

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[@TaimTalksMed]

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[@TaimTalksMed]

Glad to hear! :)

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[@FTUssg]

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[@TaimTalksMed]

There's an email under the info tab on my channel. You can use it to contact me if you wish! =)