Page 15 - 1. A&P respiratory review_Neat

CikguOnline
CikguOnline
How air enter human body?

AIR, A NETWORK
JOINED AIR MOISTENS PASSAGE TO GASES ARE
AIR FROM AND LEFT & OF SMALLER EXCHANGED
MOUTH WARMS RIGHT LUNG BRANCHES

Nostrils Pharynx Trachea Bronchi Bronchioles Alveoli

Air enters the body Air passes to the The trachea a passage Two branches at the end A network of The functional
through the nostrils. In pharynx (throat) at the for air, moistens and of the trachea, each lead smaller branches respiratory units in
nasal cavities Cilia (hair- back of the mouth warms it while it passes to a lung leading from the the lung where
like organelles) within where it is joined by into the lungs, and bronchi into the gases are exchanged
the nasal mucosa air that has entered protects the respiratory lung tissue &
provide a continuous the system through surface from an ultimately to air sacs
beating movement to the mouth. accumulation of foreign

move air particles along particles. Lined with a
the nasal cavities, where moist mucous-
they are warmed and membrane layer
moistened. composed of cells
containing small hairlike
projections called cilia.