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Pyramidalis
Other Terms:
Pyramidalis muscle,
Musculus pyramidalis,
Muscle pyramidal
Muscle parts
None
Latin name
Musculus pyramidalis
Latin muscle parts
None
Group
Abdominal wall – ventral muscle
Etymology
In English, this muscle’s name is the pyramid shaped muscle. The word pyramidal comes from the Egyptian pimar designating the shape we know as the “pyramid.”
Origin
Anterior surface of the pubic bone and the symphysis pubis
Insertion
Linea alba
Action
Tenses the linea alba. Probably weakly assists the rectus abdominis with flexion of the lumbar vertebral column.
Nerve supply
Subcostal nerve (T12)
Blood supply
Inferior epigastric artery and superficial epigastric artery.
Latin
Musculus pyramidalis
French
Muscle pyramidal
