Terms in this set (26)
functions of the respiratory system
four processes of respiration
1. pulmonary ventilation
2. external respiration
3. transport of respiratory gases
4. internal respiration
movement of air into and out of the lungs
exchange of gases between lungs and blood
Where does external respiration occur?
transport of respiratory gases
transport of carbon dioxide and oxygen to and from the lungs and cells
exchange of gases between the blood and tissue cells of the body
where does internal internal respiration occur
A flap of tissue that seals off the windpipe and prevents food from entering.
opening between vocal folds
mouth of windpipe
false vocal cords
where are the vestibular folds located?
superior to vocal folds
Contains 16-20 C-shaped rings joined by fibroelastic connective fiber
four layers of trachea
mucosa, submucosa, hyaline cartilage, adventitia
fibromusculocartilaginous layer of trachea
function of trachealis muscle
What does the trachea branch into?
reduction in diameter of a bronchus
the bronchi become more open or dilated
respiratory zone structures
respiratory bronchioles, alveolar ducts, alveolar sacs, alveoli
structure of alveoli
-One cell wall thick, creating short diffusion pathway.
-Moist and extremely large surface area.
-Lots of capillaries around alveoli.
-High blood supply.
How many lobes does the right lung have?
How many lobes does the left lung have?
grooves between lung lobes
what skeletal muscles are involved in breathing