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| Question | Answer |
| 3.2 Breathing and Respiration | By Rahma Salih Abdelgadir |
| What must cells have? | Cells must obtain energy |
| Define respiration | Respiration is a series of chemical changes, taking in cells to realise energy. |
| What must respiration have? | Respiration must have: glucose and oxygen |
| What is the chemical reaction to produce energy? | oxygen + glucose= carbon dioxide + water + energy |
| What's glucose? | Glucose is a simple sugar. It comes from the digestion of food located in the digestive system. |
| Define respiratory system | The respiratory system takes in air and makes oxygen available to cells |
| What happens when you breathe in though your nose? |
When breathing in though the nose the air is warmed, moistened and cleaned
Image:
Images (binary/octet-stream)
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| What is cilia? | Cilia are tiny hairs that line the nasal cavity |
| What is pharynx? | Pharynx connects the mouth and nose to the oesophagus, where the mucus is swallowed |
| What is trachea? | Trachea is a tube, its as thick as a garden hose. It has thin walls which are reinforced with rings called cartilage. |
| Whats the propose of the rings? | The rings stop the trachea from collapsing as you inhale |
| What is bronchioles? | Bronchioles are small tubes formed by the division of the bronchi. |
| Whats alveoli? | Alveoli are a cluster of sacs in your lungs |
| What do alveoli provide? | Alveoli provide a very large surface area, this allows gas to be easily exchanged between the lungs and bloodstream |
| What are capillaries | Capillaries are tiny blood vessels |
| How thick are the alveoli's walls | They are one cell thick |
| What is the process of diffusion? | The process is that oxygen dissolves in the moist surface of the alveoli and moves |
| Where does oxygen enter after entering the blood | Oxygen enters the red blood cells |
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