breathing system Flashcards
what is the movement of air in and out of the lungs called
ventilation
where is the respiratory system located
thoracic cavity
draw + label a diagram of the human breathing system
what’s the function of the epiglottis
prevents food entry into the trachea
what’s the funtion of the larynx
contains vocal chords for speech
outline the process of inhalation
brain sends impulse to muscles, intercostal muscles and diaghram contract, ribcage moves up and out, thoracic volume increases as pressure drops, air moves in
outline the process of exhalation
intercostal muscles and diaghram relax, ribcage moves back, thoracic volume decreases as pressure rises, air forced out
what is located at the end of the breathing tract responisble for gaseous exchange
alveoli
what gas controls the rate of breathin
co2
give three reasons as to how alveoli are adapted for efficient gas exchange
numerous, large surface area, one cell thick
give a breathing disorder + a cause + a treatment
asthma- allergens/dust/pet dander, inhalers