Alvoeli Flashcards
1
Q
Adaptions
A
Large surface area
Moist lining for dissolving gases
Thin walls
Good blood supply
2
Q
Gas exchange across alveoli
A
Surrounded by blood vesseles-capillaries
High concertration of 02 in air than blood so 02 diffuses out of air in the alveoli and into blood
C02 diffuses opposite direction.
3
Q
Absorbing products of digestion
A
Glucose and amino acids absorbed by blood stream from small intestine.
4
Q
Villi
A
Increase surface area so digested food is absorbed quickly
Single layer of surface Crlls
Good blood supply so quick absorption
