respiratory system revision
- Created by: JuliaJablonska
- Created on: 31-10-21 15:13
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- respiratory system
- respiratory system
- what is the function of the respiratory system? to exchange oxygen for carbon dioxide
- What is the order of the parts of the respiratory system that air passes through from the outside all the way to the site of gas exchange?Mouth, trachea, bronchi, bronchioles, alveoli
- What do glandular cells produce in the tubes of the lungs? Mucousd
- What is the purpose of mucus in the lungs? Trap bacteria and dirt
- What do cilia on cells in the lungs do? Beat to move mucous and the trapped bacteria and dust/dirt to the back of the throat to cough up
- What are pleural membranes important for lung function? They connect the lungs to the ribcage and diaphragm, which is necessary for expiration and inspiration
- inspiration and expriation
- What is inspiration and expiration? Breathing in and out
- How does the brain control expiration and inspiration? It sends electrical impulses to the muscles to contract in inspiration, and stops for expiration
- What happens to the intercostal muscles and diaphragm in inspiration? They contract. The diaphragm flattens out
- What happens to the ribcage in inspiration? It moves up and outwards
- What happens to the volume of the lungs in inspiration? It increases
- What happens to the intercostal muscles and diaphragm in expiration? They relax. The diaphragm returns to its domed shape.
- What happens to the pressure inside the lungs in inspiration? It decreases
- gaseous exchange
- What is the function of the alveoli? Exchange of gases
- How are the alveoli adapted to do their job? Large surface area, thin (1 cell thick), many capillaires, moist lining
- What is diffusion? Movement of molecules from an area of higher to lower concentrationed
- What carries oxygen in the blood? Red blood cells. It is bound by haemoglobin.
- Why is haemoglobin important? It binds oxygen.
- cellular respiration
- What is the purpose of respiration? To release energy stored in glucose
- Where in the cell does respiration occur? Mitochondria
- What is the chemical word equation for aerobic respiration? Glucose + oxygen ???? carbon dioxide + water
- What is the chemical word equation for anaerobic respiration? Glucose ???? lactic acid
- What is the name of the energy carrying molecule? ATP
- respiratory system
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