thoracic cavity and lungs Flashcards
what is the lateral boundary of the thorax cavity
ribs and intercostal muscles
what is the posterior boundary of the thorax cavity
vertebral column, ribs, intercostal muscles
what is the anterior boundary of the thorax cavity
ribs, intercostal muscles, sternum
what is the inferior boundary of the thorax cavity
diaphragm
serous membranes line body cavities that are _________ to the outside enviornment
not open
what is the function of serous membranes
the secrete serous fluid to decrease the amount of friction between parietal layers and serous layers which allows for smooth movement
because the parietal pleura extends further than viseral, it creates a what? which is a?
costodiaphrahmatic recess, potential space that becomes actual if fluids and materials build up here
what pleura is directly on the lungs and acts as a “shrink wrap”
visceral pleura
where is the pleural cavity located, what is its function?
sits in between the parietal pleura and the visceral pleura. thin capillary layer of fluid to lubricate the surfaces and reduce friction
what is the process of the lungs recieveing blood?
thelungs recieve blood low in oxygen and high in carbon dioxide from the pulmonary artieres (from the right ventricle of the heart)
after the blood has been oxygenized from the lungs, where do they go?
pulmonary veins takes the oxygenated blood back to the heart via pulmonary veins. the pulmonary veins drain into the left atrium of the heart
where does drainage processs from the pulmonary system?
bronchopulmonary nodes, tracheobronchial nodes, branchomediastinal trunk, to internal jugular and subclavian veins
what does the hilum of the lungs do/contain
enterance/exit of the bronchi and pulmonary arteries/veins to the heart
how many secondary bronchii does each lung have
right-3
left- 2
(one for each lobe)
sympathetic fibers ______ the airway diameter, while the parasympathetic airway diameter ______
increases, stays the same
