Rectus abdominis

Musculus rectus abdominis

A long, flat, paired muscle running vertically on each side of the anterior abdominal wall. Enclosed in the rectus sheath, it originates from the pubic crest and symphysis and inserts on the xiphoid process and costal cartilages of ribs 5-7. Three tendinous intersections create the appearance of a six-pack.

Type Muscle
Body System Muscular
Body Region Abdomen
Latin Name Musculus rectus abdominis
FMA ID 9628

Function

Flexes the trunk (bending forward). Compresses the abdominal viscera for functions including forced expiration, defecation, urination, and childbirth. Stabilizes the pelvis during walking.

Clinical Significance

Diastasis recti is separation of the rectus muscles at the linea alba, common in pregnancy. Rectus sheath hematoma results from epigastric vessel injury. The rectus abdominis free flap is used in breast reconstruction (TRAM flap).

Frequently Asked Questions

What is the Rectus abdominis?
A long, flat, paired muscle running vertically on each side of the anterior abdominal wall. Enclosed in the rectus sheath, it originates from the pubic crest and symphysis and inserts on the xiphoid process and costal cartilages of ribs 5-7. Three tendinous intersections create the appearance of a s
What is the function of the Rectus abdominis?
Flexes the trunk (bending forward). Compresses the abdominal viscera for functions including forced expiration, defecation, urination, and childbirth. Stabilizes the pelvis during walking.
What body system is the Rectus abdominis part of?
The Rectus abdominis is part of the Muscular.
What conditions affect the Rectus abdominis?
Diastasis recti is separation of the rectus muscles at the linea alba, common in pregnancy. Rectus sheath hematoma results from epigastric vessel injury. The rectus abdominis free flap is used in breast reconstruction (TRAM flap).
Where is the Rectus abdominis located?
The Rectus abdominis is located in the Abdomen region of the body.

Related Structures

anterior internodal tract anterior internodal fasciculus aponeurosis aponeuroses atrioventricular node A-V node Bachmann's bundle anterior interatrial band Biceps brachii Musculus biceps brachii bundle of His A-V bundle cardiac muscle tissue of myocardium cardiac Purkinje fiber cardiac Purkinje fiber

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