637633
Description
Mind Map by dylanbrook, updated more than 1 year ago
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Created by dylanbrook
about 12 years ago
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Breathing andRespiration
- Breathing
- Respiratory system
- In a nutshell: Breathe in so Oxygen
diffuses into bloodstream, breathe out
so CO2 diffuses out of bloodstream
- To Inhale
- 1. Intercostal muscles
contract pulling ribcage
upwards
- 2. Diaphragm
contracts, causing it
to flatten
- 3. (1) and (2) cause
increase in volume of
Thorax
- 4. As a result, body has lower conc. of
air than outside, so air goes in
- 1. Intercostal muscles
contract pulling ribcage
upwards
- To Exhale
- 1. Intercostal muscles relax, so
ribcage moves downwards
- 2. Diaphragm relaxes, returning to domed shape
- 3. (1) and (2) Cause
reduction in volume of
thorax
- 4. As a result, body has higher
conc. of air than outside, so air goes
out
- 1. Intercostal muscles relax, so
ribcage moves downwards
- In a nutshell: Breathe in so Oxygen
diffuses into bloodstream, breathe out
so CO2 diffuses out of bloodstream
- Alveoli provide HUGE S.A, with blood
capillaries, so gases readily diffuse into
and out of blood
- Healthy person breathes
all the time, but may stop
due to disease or injury.
Can be helped though:
- Negative pressure ventilators.
- CAUSES air to be
drawn in
- CAUSES air to be
drawn in
- Positive pressure ventilators
- FORCES air in
- FORCES air in
- Negative pressure ventilators.
- Healthy person breathes
all the time, but may stop
due to disease or injury.
Can be helped though:
- Respiratory system
- Respiration
- Releases energy for lots
of things:
- 1. Build up larger molecules from smaller ones
- 2. Animals use it to MOVE (muscles contract)
- 3. Mammals and birds use it to keep them warm
- 4. Plants use it to build sugars etc. in amino acids to proteins
- 1. Build up larger molecules from smaller ones
- Releases energy for lots
of things:
- Circulation
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