Respiratory System

Question 1

Nasal cavity

Answer 1

Filters, warms and moistens air
-nose hairs catch dust particles

Question 2

Orals cavity

Answer 2

Takes in air but doesn’t warm, moisten or filter it

Question 3

Pharynx

Answer 3

Path for food and air - branches into trachea and esophagus

Question 4

Known as the voice box and produces sound

Answer 4

Larynx

Question 5

Known as the windpipe where air passes from larynx to bronchi

Answer 5

Trachea

Question 6

Lungs

Answer 6

Main organ and site of gas exchange (o2 in Co2 out)

Question 7

Ribs

Answer 7

Protect the lungs
-expands on inhalation
-contracts on exhalation

Question 8

Muscle that separates the chest (thoracic cavity) and abdominal cavity and controls breathing
-contracts on inhalation
-relaxes on exhalation

Answer 8

Diaphragm

Question 9

Bronchi

Answer 9

Two large branches of the trachea that move air to and from the lungs

Question 10

Bronchiole

Answer 10

Many small tubes leading from the bronchi to alveoli

Question 11

Alveolus

Answer 11

Air sac that is the site of gas exchange in the lungs

Question 12

Hemoglobin

Answer 12

Oxygen is carried by hemoglobin (oxyhemoglobin) in red blood cells to wherever it is needed in the body (tissue cells)

Question 13

Tidal volume

Answer 13

Amount of air that is regularly breathed in and out

Question 14

The amount of air that remains in the lungs after maximum exhalation

Answer 14

Residual volume

Question 15

Pathway of air

Answer 15

Nose, trachea, bronchi, lungs

Question 16

Air is mostly composed of…

Answer 16

Nitrogen gas

Question 17

Where does cellular respiration occur

Answer 17

Mitochondria

Question 18

Vital capacity

Answer 18

Total amount of air breathed out after a full inhalation

Question 19

Contraction of smooth muscle surrounding airways that causes wheezing

Answer 19

Asthma

Question 20

Cystic fibrosis

Answer 20

Thick mucus blocks airways and causes infection and wheezing

Question 21

Infection causing inflamed alveoli with phlegm or pus

Answer 21

Pneumonia

Question 22

What is cellular respiration

Answer 22

When organisms use oxygen to break down food molecules into energy

Question 23

Site of gas exchange in the lungs

Answer 23

Alveolus

Question 24

-Oxygen taken in through the lungs and into alveoli where it defuses through the cellular membrane (high to low concentration) to the rest of the body
-Carbon dioxide passes from the blood to lungs (high to low concentration) and is exhaled

Answer 24

Gas exchange