Exchange Of Materials Flashcards
particles that let some types of particles through the are known as what?
partially permeable membranes
a type of diffusion where I agree moves across partially permeable membranes
osmosis.
if a substance has to be moved accross the concentration graduate then this would use what?
active transport
what does active transport require?
- transport protein
- energy
where does the energy for active transport come from?
cellular respiration.
if you sweat too much during excersise and don’t take in any more water what might happen?
your cells will possibly become dehydrated from lack of water and ions.
what 4 things can change the rate of diffusion/osmosis?
- Surface area
- thickness (thinner being better)
- efficient blood flow/supply
- being well ventilated
what is the name of the tiny air sacs in the lungs that provide a large surface area for the lungs?
alveoli
blood capillaries are very what which allows for quick diffusion times
thin.
ventilating your lungs is also known as what?
breathing
please look at of 222 diagram
?
intercostal muscles control what?
the volume of the lungs
the iron lung causes the patient to breathe how?
by using a vacuum, using pressure, less pressure would make the chest rise causing the patient to breathe in.
how does a positive pressure ventilator work?
forces air in and waits until they fully inflate and then stops, the lung then falls and forces air out
villi do what to the small intestine
increasing surface area which increases the rate of osmosis and diffusion.
