Flashcards in phys6final Deck (15):
what are the three mechanisms that control the pH levels of the body?
Buffer mechanism, respiratory and urinary mechanisms.
Which mechanisms controls Carbonic Acid levels?
which mechanisms controls sodium bicarbonate levels?
If someone suffers from hyperventilation what could be the cause?
If someone suffers from renal disease, what could be the cause?
If someone suffers from Cushing's syndrome, what could be the cause?
How long does it take the SI to absorb food?
Between 3 to 6 hours
How much chymes can pass through the pyloric sphincter at one time?
How long does it take the stomach to empty?
Normally 4 hours (6 hours if a lot of fat)
What is protein composed of?
CHON - carbon, hydrogen, oxygen & nitrogen
What move into the Kreb cycle to produce ATP?
Does glycolysis require O2?
No, it is anaerobic
How does a cell utilize ATP for itself?
By breaking one of the phosphate bonds.
What happens in the urinary mechanism?
Co2 leaves the bloodstream in the form of H2CO3. This acid splits into HCO3 and H+. Then a salt inside the nephron absorbs the H+ and kicks out the extra sodium Na, so that Na is not lost in urine.