Thoracic And Abdominal Wall Flashcards
Boundaries of thorax: thorax thoracic aperture and inferior. Thoracic aperture
Sup- thoracic inlet t1 vertebral posterior manubrium anterior 1st rib
Inferior - t12 posterior, xiphisternal joint (ant) ,11th 12th laterally closed by d
Thoracic cage
12 vertebrae
12 costal cartilages
Sternum t5-t9 manubrium t3 -t4 xiphoid t9
Intercostal spaces 11 , 11 pairs of nerves
Subcostal 1 t12 spinal nerve sub costal nerve
Named for rib above
Abdominal boundaries
Diaphragm to pelvis Musculoaponerotic Diaphragm Thoracic cage to 4th intercostal space Continues with pelvic cavity Lined by peritoneum
Intervertebral
Symphysis secondary cartilaginous
Body’s of vertebra bound by discs
Costoveterebral joint
synovial plan joint
head of each rib with costal facet of corresponding vertebral body
costotransverse
synovial plane joint
articulates with tubrecules of ribs with transverse processes of vertebrae
sternocostal
1st primary cartilaginous costal cartilage w/ manubrium
2-7 synovial joint costal cartilage w/ sternum
sternoclavicular
saddle joint
sternal end of clavicle to manubrium 1st costal cartilage
costochondral
primary cartilaginous
lateral end of sternal cartilage with sterum end of rib
no movemennt
interchondral
synovial joint btw 6789 ribs cartilages w/ ribs
manunubrium sternal
secondary cartilaginous symphysis no movement
btw manubrium and body of sternum
xiphisternal
no movement
primary cartilaginous
xiphoid process and body of sternum
inspiration
increase intrathoracic diameters and volumes
pressures comes in
diaphragm contracts along w/ intercostal muscles ribs up
expiration
diaphragm intercostal muscles relax decreasing volume inthroacic pressure and volume ribs down
nerves of thoracic wall
intercostal t1-t11 12th anterior rami
subcostal 12 subcostal nns
typical intercostals 3-6 margins of costal gooves
atypical intercostals 1 2 7 9 give rise to lateral cutanoues