gaseous exchange (1) Flashcards
1
Q
what is the definition of gaseous exchange
A
the process where oxygen is breathed in and exchanged for carbon dioxide to be breathed out
2
Q
what are the alveoli
A
small air sacs in the lungs where gaseous exchange occurs
3
Q
what are haemoglobin
A
the protein found in red blood cells that transport oxygen around the body
4
Q
what two ways does oxygen get into the trachea
A
nasal cavities and the mouth
5
Q
what is the function of alveoli
A
gaseous exchange
6
Q
what is diffusion
A
when gases move from an area of high concentration to areas of low concentration
7
Q
name 3 adaptations of the alveoli to quicken gaseous exchange
A
- large surface area
- layer of moisture
- very thin walls
