Respiratory System Flashcards
respiratory system
provide body with a fresh supply of oxygen for cellular respiration and remove the waste product carbon dioxide
internal entry and exit point for the air
nose
serves as the passageway for both air and food at the back of the throat
pharynx
voice box
as air passes over your vocal chords, you speak
larynx
windpipe
what connects your pharynx to your lungs
trachea
a piece of skin called ??? covers the trachea when you swallow, preventing food from entering
epiglottis
two large passageways that lead from the trachea to your lungs (one each lung)
bronchi
bronchi is subdivided to ???
bronchioles
further subdivisions of bronchioles lead to tiny air sacs called ???
alveoli
alveoli are in _____
clusters
exchange of gases between alveoli and blood capillaries
alveoli
contain the alveoli, bronchi and connective tissue
main organ of the respiratory system
lungs
muscle that causes you to breathe
diaphragm
involuntary contractions of diaphragm
hiccups
surface of alveoli are covered in _____ that prevents them from collapsing during exhalation
thin lipoprotein