B3a
- Created by: anniedarlington
- Created on: 28-03-15 10:46
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- B3a
- breathing system
- artificial ventilator - machine which moves air in and out of the lungs
- air pumped into lungs, expanding ribcage. when pumping stops ribcage relaxes and pushes air back out of the lungs
- breathe in - intercostal muscles and diaphragm contract - diaphragm flattens - volume of thorax increases - reduced air pressure - air drawn into lungs and reverse
- artificial ventilator - machine which moves air in and out of the lungs
- water flow through plants
- dissolved sugars are made in leaves and transported to growing regions and storage organs of plants
- the blood
- white blood cells - antibodies, engulfing, producing antitoxins
- artificial heart, won't be rejected
- risk of operation going wrong, heart doesn't work as well
- temp of skin monitored by temp receptors in skin
- ion level not right - too much/little water would be drawn into cells which would damage the cells
- kidney failure
- dialysis done regularly to keep everything at the right levels
- controlling blood glucose
- diabetics control intake of simple carbs (reduce), insulin injection, regular exercise
- insulin previously extracted from pigs, now gm bacteria used
- now doesn't cause adverse reactions
- pancreas transplants can be used - risk of rejection, immuno-suppressant drugs
- investigating artificial pancreases and using stem cells
- breathing system
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