respiration and gas exchange Flashcards
1
Q
what makes gas exchange happen?? in the body or in nature?
A
- lungs
- fish gills
- plants
2
Q
what features help gas exchange happen?
A
- good ventilation with air (concentration gradient increases)
- good blood supply (concentration gradient increases)
- large SA (area increases)
- thin surface (diffusion distance decreases)
- moist ( dissolving substances increases)
3
Q
what is in an alveolus (lung)?
A
- wall of capillaries (outside layer)
- plasma ( second layer)
- red blood cells (second layer)
- alveolus ( fourth and last layer) (inner)
4
Q
larynx?
A
- below the mouth
- helps air pass along
- helps us make sounds
5
Q
tranchea?
A
- windpipe
- connects the nose and the mouth to the lungs
6
Q
c shaped cartilage?
A
- under the tranchea
- flexible
- opens airways
- can increase the diameter for heavy breathing
7
Q
bronchi?
A
- large tubes that branch off to the lungs
- branches off the tranchea
8
Q
bronchioles?
A
- smaller tubes
- branch off of the bronchi in the lungs
9
Q
where are the ciliated epithelial cells?
A
- lined down the inside of the lungs
- tiny hairs
- pushes mucus our of the alveoli
10
Q
where is mucus made?
A
goblet cells
11
Q
what does mucus do?
A
- traps particles and pathogens
- stop them from damaging lungs
