Respitory System

Question 1

Inspired and expired air

Answer 1

Inspired -
Nitrogen 78%
Oxygen - 21%
Carbon dioxide - 0.04%
Expired air -
Nitrogen 78%
Oxygen - 16%
Carbon dioxide - 4%

Question 2

Tidal volume

Answer 2

The amount of air inspired or expired in a normal breath.

Question 3

Vita, capacity

Answer 3

The maximum amount of air the lungs can expire after the maximum inspiration. Approx 2.5L

Question 4

Expiratory reserve volume

Answer 4

The maximum volume of air that can be exhaled

Question 5

Inspiratory reserve volume

Answer 5

The maximum amount of air that can be inhaled

Question 6

Tidal volume during exercise

Answer 6

During exercise the demand for oxygen increases as oxygen is needed for energy production. Breathing increase in depth and rate to meet the demand of oxygen.
Carbon dioxide is a byproduct of aerobic energy production and we need to remove it when we breather out. To do all of this, tidal volume increases

Question 7

Lungs

Answer 7

Two lungs
Allow air to be moved in and out of body
Air enters the body through inspiration
Leaves body through expiration

Question 8

Bronchi

Answer 8

Air travels to each lung via a bronchus
Bronchi - term for both left and right bronchus
The passage of air gets smaller and smaller

Question 9

Bronchioles

Answer 9

The smaller airways that branch off the bronchi
Branch out throughout the lungs and carry air from bronchi to alveoli

Question 10

Alveoli

Answer 10

Tiny air sacs
Attached to bronchioles
The exchange of o2 and co2 occurs here

Question 11

Diaphragm

Answer 11

Domed sheet of muscles that helps breathe in and out
Inspiration - diaphragm contracts and flattens to make more space in the chest so the lungs can expand to pull in air
Expiration - the diaphragm relaxes and returns to a dome shape making the chest cavity smaller. This helps force air out of the lungs.

Question 12

Gas exchange alveoli to capillaries

Answer 12

Alveoli has high pressure of o2. Capillaries surrounding alveoli have low pressure of O2. Movement of O2 from high pressure to low pressure through thin walls of capillaries. Capillaries gain o2

Question 13

Gas exchange capillaries to aveoli

Answer 13

Capillaries surrounding alveoli have high CO2 and alveoli has low CO2. Movement of CO2 from high pressure to low pressure. CO2 moves from capillaries to alveoli to be breathed out