structure of the thorax Flashcards
what do the ribs do
they protect the vital internal organs
what does the intercostal muscles do
they are muscles that are found between the ribs
what does the diaphragm do
it changes pressure allowing breathing to happen
what does the trachea do
it is the windpipe
what does the bronchi do
it is when the trachea splits into 2
what does the bronchioles do
it connects to the alveoli
what does the alveoli do
it is the area of gas exchange
what do the pleural membrane do
they are found in the chest and help reduce friction while breathing
what does the intercostal muscles do when inhaling and exhaling
the contract and relax
what does the ribcage do when inhaling and exhaling
it goes up and out
and down and in
what does the diaphragm do when inhaling and exhaling
it contracts and relaxes
what does the pressure do when inhaling and exhaling
it decreases and increases
what does the air do when inhaling and exhaling
it moves in and moves out
what does air move from
an area of a high pressure to an area of lower pressure
what are the alveoli adaptations
they are thin- they a one cell thick which allowed a shorter distance for diffusion
they are folded- which increases the surface area for diffusion
they have large amounts of capillaries- which increase the concentration of blood and air in the alveoli
