Zusammenfassung der Ressource
11. Gas exchange in humans
- list the features of gas
exchange surfaces in
humans
- large surface area
- thin
surface
- good blood
supply
- good ventilation with
air
- name and identify
- lungs
- diaphragm
- ribs
- intercostal muscles
- internal
- external
- larynx
- trachea
- bronchi
- bronchioles
- alveoli
Anmerkungen:
- and associated capillaries
- state the functions
of the cartilage in
the trachea
- Explain the role of......
in producing volume
and pressure changes
in the thorax leading
to the ventilation of
the lungs
- ribs
- internal intercostal muscles
- external intercostal muscles
- diaphragm
- state and explain the
differences in
composition
between inspired
and expired air
- oxygen
- carbon dioxide
- water vapour
- investigate the
differences in
composition
between
inspired and
expired air
- using
limewater
Anmerkungen:
- as a test for carbon dioxide
- investigate and describe
the effects of physical
activity on rate and depth
of breathing
- explain the link between physical activity and depth of breathing
Anmerkungen:
- in terms of increased carbon dioxide concentration in the blood, detected by the brain, causing an increased rate of breathing
Carbon dioxide lowers the pH of the blood
Carbon dioxide is a waste product that needs to be excreted
- explain the role of ..... in
protecting the gas
exchange system from
pathogens and particles
- goblet cells
- mucus
- ciliated cells