Breathing And Digestion Flashcards
(20 cards)
What are the main parts of the respiratory system?
Trachea, Alveoli, Bronchiole, Right bronchus, Ribs, Intercostal muscles, Diaphragm, Heart
What is the function of fibre in a balanced diet?
Helps to eliminate waste
What is the primary source of energy in a balanced diet?
Carbohydrates
What nutrient is essential for the growth and repair of the body?
Protein
What mineral is needed for red blood cells?
Iron
What is the role of calcium in the body?
Needed for strong teeth/bones
Define breathing.
Movement of air in/out of the lungs
What determines the rate of breathing?
Amount of oxygen needed by the cells
What is lung volume?
The amount of air breathed in or out
Why must food be broken down?
To diffuse into the blood
What are enzymes?
Substances that speed up chemical reactions in digestion
What is the function of the alveoli in gas exchange?
Oxygen goes to cells for respiration; carbon dioxide is removed from the body
List three adaptations of alveoli.
- Thin walls
- Good blood supply
- Moist
What happens in the stomach during digestion?
Food is mixed with acidic juices to start digestion and kill microorganisms
Where is digestion completed and nutrients absorbed?
Small intestine
What is the role of the large intestine?
Absorbs water
True or False: Lifestyle choices like smoking can damage the lungs.
True
What can diseases like asthma do to lung function?
Reduce lung volume and make it harder to breathe
Fill in the blank: The _______ is responsible for mixing food with acidic juices.
Stomach
List the organs involved in the digestive system.
- Salivary glands
- Mouth
- Oesophagus
- Liver
- Stomach
- Gall bladder
- Pancreas
- Large intestine
- Appendix
- Small intestine
- Rectum
- Anus
