Respiratory system

Question 1

The function of the respiratory system

Answer 1

To inhale oxygen and exhale carbon dioxide.

Question 2

Nasal cavity

Answer 2

Filters and allows air to flow in

Question 3

Pharynx

Answer 3

connects the mouth and nose to the oesophagus.

Question 4

Larynx

Answer 4

voicebox

Question 5

Trachea:

Answer 5

Is an airway leading from the larynx to the bronchi.

Question 6

Bronchi:

Answer 6

The main passageway into the lungs

Question 7

Alveoli

Answer 7

Tiny sacs within the lungs where gas exchange takes place in the lungs

Question 8

Ribcage

Answer 8

Protects, expands and contracts to allow more space for the lungs.

Question 9

Diaphragm

Answer 9

Is a muscle that contracts to allow more room for the lungs to expand.

Question 10

Bronchioles

Answer 10

Carry air to the alveoli

Question 11

What happens when you inhale

Answer 11

• lungs expand
• Ribcage moves upwards and outwards
• Diaphragm flattens

Question 12

What happens when you exhale

Answer 12

-Lungs contract
-Ribcage moves downwards and inwards
Diaphragm relaxes

Question 13

.What is cilia

Answer 13

Fine hairs that filter air

Question 14

What is cellular respiration and why is it important?

Answer 14

Cellular respiration is when oxygen and glucose convert into carbon dioxide, water and energy. It is important because cells need energy to carry out functions.

Question 15

Worded equation cellular respiration

Answer 15

Oxygen+glucose=carbon dioxide+water+energy.

Question 16

Describe the path that air takes through the mouth and into the blood

Answer 16

The air enters through the mouth and nose then travles down the throat. It flows through the larynx and enters the trachea. The air travels to the bronchi then briconhioles. Briocnhioles pass air to the alveoli. Capillaries then pass oxygen from the alveoli to the bloodstream.

Question 17

Why do capillaries over each alveolus?

Answer 17

To increase how much oxygen can be passed through the alveoli at once

Question 18

diffusion

Answer 18

Diffusion is when a substance moves from an area of high concentration to an area of lower concentration.

Question 19

Difference between breathing and cellular respiration

Answer 19

Breathing is the inhale of oxygen and exhaling of carbon dioxide whilst respiration is where cells use oxygen to break down sugar for energy.

Question 20

The connection between red blood cells and cellular respiration

Answer 20

Red blood cell transports oxygen to the cells so that they can obtain the sugar for energy.