Pyramidalis Muscle
Original Editor - User Name
Top Contributors - Khloud Shreif, Lucinda hampton, Kim Jackson, Oyemi Sillo and Leana Louw
Description[edit | edit source]
Pyramidalis is a paired anterior triangular abdominal muscle with rectus abdominis that contributes to form the anterior abdominal wall. It's absent in 20% of the population and has a less significant role, triangular muscle
Origin[edit | edit source]
It arises from symphysis pubic and pubic crest
Insertion[edit | edit source]
It decreases in size as it ascends and inserts medially to linea alba as a pointed apex.
Nerve[edit | edit source]
It is innervated by subcostal nerve T12
Artery[edit | edit source]
The main arterial supply from the inferior epigastric supply and the deep circumflex iliac artery to a lesser extent.
Function[edit | edit source]
When they contract tense the linea alba, contract with other abdominal muscle to increase positive abdominal pressure.[1]
