Respiration Flashcards
Function of nasal cavity
Warms and moistens air, cilia filter out debris
Function of pharynx
Common passageway for air to trachea and food to esophagus
Function of Larynx
At top of trachea, voice box - contains vocal cords
Function of trachea
Wind pipe
Held open by rings of cartilage, contains mucus to trap debris and cilia to sweep it out
Function of bronchus
Divides off trachea, one to each lung
(Pl-bronchi)
Function of lungs
Exchange of gases between air and blood
Function of bronchioles
Smaller airways, end in alveoli
Function of alveoli
Site of gas exchange within lungs
Cellular respiration
Production of ATP in cells
Internal respiration
Exchange of gases between blood and tissue fluid
External respiration
Change of gases (o2 and co2) between air (in alveoli) and blood
Breathing
Entrance and exit of air into and out of the lungs.
What is the rate of breathing
On average about 14-20 times a minute
Alveoli location
Sack- like structure at the end of each branch of broncioles
Alveoli location
Sack- like structure at the end of each branch of broncioles
Function of alveoli
Supplied with a net-work of capillaries which pick up oxygen we breathe in.
Carbon dioxide diffuses into them from the blood and we breathe out.
Structure of alveoli
Highly folded to increase surface area
Very thin and moist to allow diffusion between air and blood
Alveoli thin film of lipoprotein function
Coats the inner lining this lining prevents alveoli from collapsing
Outer Pleural membrane
Adheres closely to the walls of the chest and diaphragm
Inner pleural membrane
Fused to lungs
Pleural membranes
Help keep the lungs inflated and allow the lungs to move freely and with out friction in the thoracic cavity
Separated by a thin film of fluid
Cilia
Lining of upper airway, help keep the windpipe free of debris.
Will take mucus upward to the esophagus and you will swallow it.
Smoking destroyed cilia
