ORGANISMS EXCHANGE Flashcards
1
Q
What is the large intestine
A
- colon
- reabsorption of water
2
Q
What is bile and what does it do?
A
- made in liver
- stored in gall bladder
- enters duodenum through bile duct
- emulsifies fats
- faster digestion
- easier for lipase to hydrolyse
3
Q
Where are villi found?
A
- ileum small intestine
4
Q
What is lacteal?
A
- found in lymphatic system
- transports far and adds to blood
5
Q
Lipid absorption into blood ?
A
- lipids hydrolysed into fatty acid and monoglycerides
- micelles formed with bile salts
- move into epithelial cells
- reform triglycerides packed into chylomicrons
Move into lacteal and lymphatic system then to blood
6
Q
Endopeptidase vs exopeptidase
A
- endo hydrolyses protein into smaller chunks And larger SA with more exposed ends of polypeptide chains
- eco removes amino acids from ends of chains to increase breakdown rate
7
Q
Tracheae
A
Cartilage rings holding open
8
Q
Partial pressure
A
Pressure exerted by one gas
9
Q
How does the closed spiritless affect partial pressure
A
Pp of oxygen drops
Pp of carbon dioxide increases
