breathing system

Question 1

what is the movement of air in and out of the lungs called

Answer 1

ventilation

Question 2

where is the respiratory system located

Answer 2

thoracic cavity

Question 3

draw + label a diagram of the human breathing system

Question 4

what’s the function of the epiglottis

Answer 4

prevents food entry into the trachea

Question 5

what’s the funtion of the larynx

Answer 5

contains vocal chords for speech

Question 6

outline the process of inhalation

Answer 6

brain sends impulse to muscles, intercostal muscles and diaghram contract, ribcage moves up and out, thoracic volume increases as pressure drops, air moves in

Question 7

outline the process of exhalation

Answer 7

intercostal muscles and diaghram relax, ribcage moves back, thoracic volume decreases as pressure rises, air forced out

Question 8

what is located at the end of the breathing tract responisble for gaseous exchange

Answer 8

alveoli

Question 9

what gas controls the rate of breathin

Answer 9

co2

Question 10

give three reasons as to how alveoli are adapted for efficient gas exchange

Answer 10

numerous, large surface area, one cell thick

Question 11

give a breathing disorder + a cause + a treatment

Answer 11

asthma- allergens/dust/pet dander, inhalers