lungs Flashcards
trachea
has 16-20 rings of cartilage for support
carina
where trachea bifurcates
primary bronchi
one to each lung
secondary bronchi
one to each lobe
tertiary bronchi
one to each segment
ant border of lungs
sharp edge
oblique fissure
divides lunges into upper and lower lobes on the left and upper and middle on the right
lingula
on the left lung, tounge like, covers the heart
horizontal fissure
on the right lung, divides upper lobe into upper and middle
difference between bronchopulmonary segments on right and left lung
right: has middle lobe with medial and lateral segments
left: has superior and inferior lingular segments in the upper lobe
hilum
where the vessels enter the lungs
bronchi on right lung
post and sup
pulm v’s on both lungs
ant and inf
right pulmonary artery on right lung
more superior to vein
left pulmonary artery on left lung
most superior
pulmonary arteries
bring unoxygenated blood to the lungs
travel with bronchial tree
pulmonary veins
bring oxygenated blood from heart to lungs
travel separate from tree
bronchial arteries
supply bronchi, smaller than pulmonary, travel with bronchi
pleura
double layered sac, fluid secreting membranes
parietal pleura
lines the inner surface of the thoracic cage
innervation of parietal pleura
central diaphragmatic: phrenic, C345
remainder: intercostal
* somatic pain, sharp and localized
visceral pleura
attaches to lungs
no pain
pleural cavity
space btw pleura serous fluid hydrothorax: excess fluid in space pneumothorax: air in space both collapse lung
costal reflections at
8th rib, midclavicular line
10th rib mid axillary line
12th rib at midpt of shaft
lungs end at
6 8 10
pleura ends at
8 10 12
difference in pleural endings and lung endings result in
recesses
recesses
space not filled during normal inspiration
in full inspiration it can be filled
