The Respiratory System

Question 1

• warming
• cillia sweeping debris and mucus up trachea for disposal
• mucus coating cillia and lung tissue, trapping dust/bacteria

Answer 1

Air Processing

Question 2

occurs in alveolus

Answer 2

External Respiration

Question 3

oxygen defuses from alveoli into where it binds with hemoglobin in a red blood cell

Answer 3

External Respiration

Question 4

CO2 defuses from blood to alveoli

Answer 4

External Respiration

Question 5

occurs in cells

Answer 5

Internal Respiration

Question 6

oxygen defuses out of blood into extracellular fluid and then into cells

Answer 6

Internal Respiration

Question 7

CO2 diffuses out of cells into extracellular fluid, then into blood

Answer 7

Internal Respiration

Question 8

Breathing Regulation Process

Answer 8

1) production of co2
2) co2 in blood increases
3) blood PH falls
4) aortic artery sensors detect low PH
5) brain signals diaphragm and inter-coastal muscles

Question 9

inter-costal muscles relax and ribs move in and down

Answer 9

Exhalation

Question 10

inter-coastal muscles contract and ribs expand

Answer 10

Inhalation

Question 11

diaphragm relaxes, moving upwards

Answer 11

Exhalation

Question 12

diaphragm contracts, moving downwards

Answer 12

Inhalation

Question 13

air is pushed into lungs

Answer 13

Inhalation

Question 14

air is pushed out of lungs

Answer 14

Exhalation

Question 15

volume of the thoracic cavity increases, pressure decreases

Answer 15

Inhalation

Question 16

volume of the thoracic cavity decreases, pressure increases

Answer 16

Exhalation