Breathing And Respiration

Question 1

Organ system

Answer 1

An organ system is lots of organs working together to carry out a particular process
E.g- Reproductive, digestive system, circulatory, nervous, respiratory, skeletal, excretory, immune.

Question 2

Aerobic

Answer 2

Aerobic processes eg respiration use the oxygen that is in air

Question 3

Digestive system

Answer 3

This is responsible for getting the glucose into our bodies.

Question 4

Respiratory system

Answer 4

This is responsible for oxygen entering our bodies and carbon dioxide leaving. It consists of the lungs and many tubes.

Question 5

Alveoli

Answer 5

Alveoli are the small air sacs at the end of the bronchioles, where gas exchange occurs

Question 6

Thorax

Answer 6

The thorax is the chest cavity, and contains the heart and lungs. It is separated from the digestive system by a sheet of muscle called the diaphragm.

Question 7

Abdomen

Answer 7

The abdomen is below the thorax and contains the stomach, intestines and other digestive organs.

Question 8

Trachea

Answer 8

Also called the wind pipe, it is the start of the respiratory tubes. It is held open by rings of cartilage.

Question 9

Bronchus

Answer 9

There are two of these leading off from the trachea, and going to each lung.

Question 10

Bronchioles

Answer 10

These are small branches coming off the bronchi and ending in an alveolus.

Question 11

Pleural membranes

Answer 11

These are two thin membranes that line the inside of the rib cage, and surround each lung. There is a pleural fluid between them which lubricates the inside of the lungs preventing them getting damaged by the rib cage

Question 12

Ventilation

Answer 12

Is the movement of air in and out of the lungs by breathing in and out (inhalation and exhalation)

Question 13

Gas exchange

Answer 13

The movement of gas in or out of our bodies- waste gases removed and oxygen absorbed

Question 14

Exhaling

Answer 14

Breathing out

Question 15

Inhaling

Answer 15

Breathing in

Question 16

Intercostal muscles

Answer 16

These are the muscles between the ribs, that help move the rib cage

Question 17

Volume

Answer 17

The amount of space within the lungs

Question 18

Pressure

Answer 18

The pressure is the force exerted by the air in the confined space of the lungs

Question 19

When we inhale

Answer 19

diaphragm moves down, and the rib cage moves up and out

Question 20

When we exhale

Answer 20

diaphragm moves up, and the rib cage moves down and in

Question 21

Concentration

Answer 21

The amount of oxygen or carbon dioxide within the alveoli.

Question 22

Diffusion

Answer 22

Diffusion is the movement of gases or liquids from an area of high concentration to an area of low concentration, down a concentration gradient. This does not require energy.

Question 23

Asthma

Answer 23

Asthma is when you have difficulty breathing. You can make a wheezy sound and it develops because the bronchial tubes are swollen or inflammed.

Question 24

Respiration

Answer 24

Respiration is a chemical reaction resulting in the release of energy from glucose and oxygen

Question 25

Ventilation in humans

Answer 25

Movement of air through nose or mouth, down trachea, through bronchi/bronchioles and into alveoli of lungs

Question 26

How are the lungs separated from the lower part of the body (abdomen)?

Answer 26

Muscular diaphragm

Question 27

Glucose

Answer 27

Our main fuel. We get it from the food we eat

Question 28

Aerobic word equation

Answer 28

Glucose + oxygen —-> carbon dioxide + water + energy

Question 29

Circulatory system

Answer 29

Carries small food molecules + oxygen to every cell in our body and rids waste

Question 30

Energy

Answer 30

Cells and plants use this