Lungs Flashcards
What does cell respiration’s involve
Atp is produced
Aerobic respiration equation
Glucose + oxygen —> carbon dioxide + water + ATP
Anaerobic respiration animals equation
Glucose —> lactate
Anerobic respiration plants and yeast equation
Glucose —> ethonal + carbon dioxide
Effective respiratory surfaces characteristics
- large sa
- thin
- permable to some gases
- ventilation of internal medium to allow maintenance of conc gradient
- movobent of inetrnl medium to allow maintenance of conc gradient
Name the structures in gas exchange
- lungs
- trachea
- bronci
- Bronchioles
- alveoli
What are alveolar and capillary cells made out of
Squamous epithelium
2 features as to why the squamous epithelium is suited for gas exchange
- very thin
- flat = large sa
Why is there slow blood flow in the capillaries
- allows for more time for gas exchange
How are lungs adapted to ensure rapid gas exchange in the alveoli
- red blood slowd in caillaries
- thin walls of alveoli and capillaries
- large sa of squamous epithelium cells and endothelium cells
- breathing action minains cg
- blood flow aintains cg
What is partial pressure
The concentration of a gas
Describe how o2 diffuses from alveoli to the red blood cells
- diffuses through alveolar space
- dissolves in mucas
- dissolves through alveolus cell
- diffuses through capillary cells
- diffsues through plasma
- diffusesthrough semi permable mebenw of red blood cells
- o2 joins with haemoglobin to form oxuhaemoglobin
Mechanism of breathing
Where does air move when breathed in
Down a pressure gradient into the lungs
Where does air move when we breath out
Down the pressure gradient out of the lungs
