anatomy- abdominal wall Flashcards
psoas major m.
attachments
action
innervation
lumbar verebrae -> lesser trochanter
hip flexion
anterior rami (L1 - L3)
psoas minor m.
attachments
action
innervation
T12 - L1 -> pectineal line
lumbar vertebrae flexion
anterior rami (L1)
iliacus m.
attachments
action
innervation
iliac fossa -> lesser trochanter
hip flexion
femoral n.
quadratus lumborum m.
attachments
action
innervation
iliac crest -> 12th rib
depresses 12th rib
anterior rami (T12 - L4)
abdominal wall fascia layers from superficial to deep
skin
superficial Camper’s fascia
deep Scarpa’s fascia
muscle
superficial Camper’s fascia is a _____ layer; continues over _____ & blends with _____ into the scrotum to form _____
fatty layer
continues over penis & blends with Scarpa’s fascia into the scrotum to form dartos fascia
deep Scarpa’s fascia is a _____ layer; fused with _____; continues into _____ to form _____
deep membranous layer
fused with linea alba
continues into perineum to form Colles’ fascia
what is the most superficial muscle of the abdominal wall
external oblique m. & its aponeurosis
external oblique m.
action
innervation
compresses / supports abdominal viscera
anterior rami (T7 - T11)
define aponeurosis
sheet of fibrous tissue that takes the place of a tendon in flat muscles w wide area of attachment
internal oblique m.
action
innervation
compresses / supports abdominal viscera
anterior rami (T6 - T11)
transversus abdominis m.
action
innervation
compresses / supports abdominal viscera
anterior rami (T6 - T11)
what is the deepest muscle of the abdominal wall
transversus abdominis m.
rectus abdominis m.
action
innervation
trunk flexion
anterior rami (T6 - T11)
what comprises the rectus sheath
the aponeuroses of the external oblique m., internal oblique m., & transversus abdominis m.
