Lab 6 Flashcards
Origin of External Intercostals
Inferior Margin of 1st 11 ribs
Insertion of External Intercostals
Superior margin of rib below
Action of External Intercostals
Elevates ribs during inspiration
Nerve Supply of External Intercostals
Intercostal Nerves
Blood Supply to External Intercostals
Ribs 1-2= supreme intercostal and thoracic arteries
Ribs 3-12= anterior intercostal, posterior intercostal and subcostal arteries.
Origin of Internal Intercostals
Inferior margin of 1st 11 ribs from cartilages to angles
Insertion of Internal intercostals
superior margin of ribs below
Action of internal intercostals
elevates ribs during inspiration
Nerve supply of internal intercostals
intercostal nerves
blood supply of internal intercostals
ribs 1-2=supreme intercostal and superior thoracic arteries
ribs 3-12= anterior intercostal, posterior intercostal, and subcostal arteries
origin of subcostals
posteriorly on internal surface of lower 6 ribs
insertion of subcostals
internal surface of 2nd and 3rd rib above
action of subcostals
depresses lower ribs
nerve supply of subcostals
intercostal nerves
blood supply of subcostals
posterior intercostal arteries
origin of transversus thoracis
internal surface of sternum and adjacent costal cartilages of ribs 3-6
insertion of transversus thoracis
internal surface of costal cartilage of ribs 2-6
action of transversus thoracis
depresses upper ribs
nerve supply of transversus thoracis
intercostal nerves
blood supply of transversus thoracis
anterior intercostal arteries
Origin of diaphragm
xiphoid process of sternum
lower 6 costal cartilages
first 3 lumbar vertebrae
medial and lateral arcuate ligaments
insertion of diaphragm
central tendon of the diaphragm
action of diaphragm
depresses central tendon to increase vertical dimension of thorax during inspiration
nerve supply of diaphragm
phrenic nerve
blood supply of diaphragm
superior phrenic artery
inferior phrenic artery
origin of rectus abdominus
public symphysis and crest
insertion of rectus abdominus
costal cartilages of ribs 5,6,7
xiphoid process
action of rectus abdominus
flexes vertebral column
compresses abdomen
nerve supply of rectus abdominus
intercostal nerves T7-T12
blood supply of rectus abdominus
superior and inferior epigastric arteries
origin of external abdominal oblique
lower 8 ribs
insertion of external abdominal oblique
abdominal aponeurosis to linea alba
pubis
anterior iliac crest
action of external abdominal oblique
bilateral- flexes vertebral column and compresses abdomen
unilateral- lateral flexion and contralateral rotation of vertebral column
nerve supply external abdominal oblique
intercostal nerves T7-T12
iliohypogastric and ilioinguinal nerves
blood supply of external abdominal oblique
lower posterior intercostal, subcostal, and deep circumflex iliac arteries
origin of internal abdominal oblique
inguinal ligament
iliac crest
thoracolumbar aponeurosis
insertion of internal abdominal oblique
costal cartilages of lower 4 ribs
abdominal aponeurosis to linea alba
action of internal abdominal oblique
bilateral-flexes vertebral column and compresses abdomen
unilateral-lateral flexion and ipsilateral rotation of vertebral column
nerve supply of internal abdominal oblique
intercostal nerves T8-T12
iliohypogastric and ilioinguinal nerves
blood supply of internal abdominal oblique
lower posterior intercostal, subcostal and deep circumflex iliac arteries
origin of transverus abdominus
inguinal ligament
iliac crest
thoracolumbar aponeurosis
costal cartilages of ribs 7-12
insertion of transversus abdominus
abdominal aponeurosis to linea alba
pubis
action of transversus abdominus
compresses abdomen
nerve supply of transverus abdominus
intercostal nerves T7-T12
iliohypogastric and ilionguinal nerves
blood supply of transversus abdominus
lower posterior intercostal, subcostal, and deep circumflex arteries
origin of quadratus lumborum
iliac crest
insertion of quadratus lumborum
12th rib
transverse processes L1-4
action of quadratus lumborum
normal: lateral flexion of vertebral column
reverse- elevates hips
nerves supply of quadratus lumborum
ventral rami T12-L4
blood supply of quadratus lumborum
subcostal and lumbar arteries
origin of iliacus
iliac fossa
insertion of iliacus
lesser trochanter of femur
action of iliacus
normal: flexion of hip
reverse: flexion of lumbar vertebral column
nerve supply of iliacus
femoral nerve
blood supply of iliacus
subcostal and lumbar arteries
psoas major origin
T12-L5 vertebral bodies and disks
L1-L5 transverse processes
insertion of psoas major
lesser trochanter of femur
action of psoas major
normal- flexion of hip
reverse- flexion of lumbar vertebral column
nerve supply of psoas major
L2,L3
Blood supply of psoas major
subcostal and lumbar arteries
origin of psoas minor
T12
insertion of psoas minor
superior ramus of pubis
action of psoas minor
flexion of lumbar vertebral column
nerve supply of psoas minor
L1
blood supply of psoas minor
subcostal and lumbar arteries