Muscles of the Trunk (Lab) Flashcards
External Intercostals
O: Inferior border of rib above
I: Superior border of rib below
A: Elevates ribs (during inhalation)
Internal Intercostals
O: Superior border of rib below
I: Inferior border of rib above
A: Depresses ribs (during forced exhalation)
Rectus abdominis
O: Pubic symphysis
I: Costal Cartilages
A: Flex trunk; compress abdomen
Rectus abdominis
O: Pubic symphysis
I: Costal Cartilages
A: Flex trunk; compress abdomen
External Oblique
O: Lower Ribs
I: Linea alba; inguinal ligament
A: flex Trunk; compress abdomen
External Oblique
O: Lower Ribs
I: Linea alba; inguinal ligament
A: flex Trunk; compress abdomen
Internal Oblique
O: Iliac crest of ilium
I: Linea alba; inguinal ligament
A: Flex trunk; compress abdomen
Internal Oblique
O: Iliac crest of ilium
I: Linea alba; inguinal ligament
A: Flex trunk; compress abdomen
Transverse Abdominis
O: Lumbar vertebrae
I: Linea alba; Inguinal ligament
A: Flex trunk; compress abdomen
Transverse Abdominis
O: Lumbar vertebrae
I: Linea alba; Inguinal ligament
A: Flex trunk; compress abdomen
Erector Spinae (group of muscles along the posterior side side of vertebrae)
A: extend trunk
Linea Alba
Linea Alba
Tendinous Intersections