B2- ventilation + plants Flashcards
1
Q
How do you work out cardiac output?
A
CO (cm3/min) = SV (cm3) x HR(bpm)
cardiac output= stroke volume x heart beat per minute
2
Q
What is ventilation?
A
breathing in + out
3
Q
What is inhalation?
A
air in, ribcage moves inwards and upwards. The Diaphragm is relaxed (CURVED)
4
Q
What is exhalation?
A
Breathing out, ribcage moves outwards and downwards. The diaphragm contracts (STRAIGHT LINE)
5
Q
What is transpiration?
A
water moving from roots to leaves (UP THE PLANT) occurs in xylem
6
Q
what is translocation
A
Transportation of food substances up and down the plant
7
Q
How to increase transpiration?
A
-increase TEMPARTURE
-increase LIGHT INTENSITY
-increase AIR MOVEMENT
-increase HUMIDITY
8
Q
How is cancer caused?
A
Uncontrolled cell growth and division
