Biology Organ Systems

Question 1

Respiratory system function

Answer 1

To breathe via gas exchange.
To take in oxygen and exhale carbon dioxide
Delivers oxygen to your body’s cells

Question 2

Nasal and oral cavity function

Answer 2

Filters and cleans air to prevent harmful substances entering system
Humidifies air so it can be used comfortably in your system
Passageway for air to be inhaled

Question 3

SInus function

Answer 3

Drains mucus

Question 4

How is mucus removed from the system

Answer 4

Digested in your stomach or excreted through the oral or nasal cavities.

Question 5

Pharynx

Answer 5

Allows air to be passed from the cavities to through to the trachea

Question 6

Trachea

Answer 6

Passage connecting Pharynx and lungs
Carries air through
Lined with mucus secreting cells

Question 7

Inhaled to exhaled oxygen ratio

Answer 7

Oxygen: 21 - 17
Carbon Dioxide: 0.04 - 4

Question 8

What parts are lined with cells that secrete mucus

Answer 8

Nasal Cavity and Pharynx

Question 9

Mucus function

Answer 9

Moistens the air we breathe in
Traps Particles to prevent them from entering lungs

Question 10

Most air comes from which entryway

Answer 10

Nasal Cavity

Question 11

Cilia Function

Answer 11

Protects respiratory system through filtering
Moves back and forth to push particles back up to throat to be swallowed

Question 12

Larynx Function

Answer 12

Contains Vocal Chords, contains epiglottis

Question 13

Epiglottis function

Answer 13

Flap of cartilage that moves over trachea so that food only goes down oesophagus and not lungs

Question 14

Brocnhi (Bronchus)

Answer 14

Connects Trachea To Lungs
Two of them
Each enters a lung

Question 15

Bronchioles

Answer 15

Split off from primary bronchus
Delivers Air from bronchus to alveoli

Question 16

Alveoli

Answer 16

Gas exchange happens here
Oxygen is diffused into the alveoli
Carbon Dioxide is diffused into the Capillaries

Question 17

Capillaries

Answer 17

Beings carbon dioxide rich blood into alveoli, takes out oxygen rich blood into the rest of the system via the heart

Question 18

Respiration formula

Answer 18

oxygen + glucose - Carbion Dioxide + Water

Question 19

Why are alveoli moist?

Answer 19

So gas exchange can comfortably occur

Question 20

Rib Cage Function

Answer 20

Physically protects ribs because of the hard bone structure
Flexible to limit chance of them breaking

Question 21

What systems does breathing rely on

Answer 21

Skeleteal, muscular, and nervous

Question 22

Diaphragm

Answer 22

Inhale - Contracts to make space for lungs which expand and air is pulled in
Exhale - Relaxes (expands) and pushes air out, lungs contract.

Question 23

Air moves from

Answer 23

High to low pressure

Question 24

When you breathe in and out the pressure will?

Answer 24

Decrease when breathe in, because more space is made, and pressure is lessened, air rushes in
Increase when breathe out because there is less space, and pressure is higher than outside, air rushes out

Question 25

Intercostal Muscles

Answer 25

Thin bands of mucles between ribs
Involved in mechanical aspect of breathing, they help expand and contract the chest cavity.