Anatomy of the respiratory system Flashcards
which vertebral level is the sternal angle
T4/5
label top to bottom
head
neck
angle
subcostal groove
costal cartilage
tubercle
articular facets
true ribs articulation
articulate directly with the sternum
false ribs articulation
they don’t directly attach to the sternum
atypical ribs
1,2,10,11,12
have unusual features
rib 1 features
flat
distinct tubercles
has grooves
rib 10 features
has one articular facet on its head
label top to bottom
body
vertebral foramen
pedicle
lamina
transverse process
spinous process
label top to bottom
superior articular facets
superior demifacet
facet for articulation with tubercle of rib
inferior articular facets
inferior demifacet
superior articular facets
articulate with the vertebrae above
superior demifacets
articulation with the head of the rib
inferior demifacet
articulation with head of the rib
inferior articular facets
articulate with the vertebrae below
rib articulation
typical rib articulates with the body of its own vertebra
transverse process of its own vertebra
and the body of the vertebra above
joints in rib articulation
costotransverse and costovertebral
they are synovial
accessory muscles in forced inhalation
sternocleidomastoid
scalenes
pectoralis major
accessory muscles in forced expiration
internal intercostals
external obliques
internal obliques
transversus abdominus
rectus abdominus
muscles of the chest wall
11 pairs of external intercostals
11 pairs internal intercostals
11 pairs innermost intercostals
external intercostals
in the intercostal space
between pairs of ribs
elevate ribs and keep intercostal space rigid
internal intercostals
in ICS lateral edge of the costal groove to the rib below
depress ribs and keep ICS rigid
innermost intercostals
medial edge of costal groove to rib below
act with internal intercostals
subcostal and transversus thoracis
arterial supply to the intercostals
posterior intercostal arteries: 1 and 2, supreme intercostal artery, 3-11 thoracic aorta
anterior intercostal arteries: internal thoracic artery
1-6 direct branches
7-11 musculophrenic artery
venous drainage of the intercostals
parallels arterial supply intercostal veins
drain into the azygous vein, most posterior
and internal thoracic veins m most anterior
innervation of the intercostals
T1-11 are intercostal nerves
T12 is the subcostal nerve
label top to bottom
median arcuate
right crus
left crus
medial arcuate
lateral arcuate
superiorly anatomy of the diaphragm
central tendon
no body attachment, fibrous pericardium is attached