Circulation Flashcards
Do cnidaria have circulatory systems?
No not really
How does an open circulatory system work?
Blood is pumped from the heart into the body and just kinda surrounds the lungs and then is sucked back to the heart (like squeezing and releasing a pipette)
What animals have open circulatory systems?
insects, spiders, crustaceans
What organisms have single circuit closed circulatory systems?
fish, squid, octopus
Go through how the heart works
Nice!
What are the valves between the atriums and the ventricles called?
right/left atrioventricular valves
What is the valve between the right ventricle and the pulmonary artery called?
pulmonary valve
What is the valve between the left ventricle and the aorta called?
aortic valve
Whats another word for the leaf atrioventricular valve? And another word?
The mitral valve and the bicuspid valve
What are the little string things that hold the valves on called?
Chordae tendineae
What is the purpose of hemoglobin and what is the alternative in squid and crabs?
To increase the O2 concentration in the blood, alternative is hemocyanin
How many molecules of O2 can 1 hemoglobin molecule bind to?
4
Explain the Bohr shift
When exercising, we release more CO2. This decreases the pH. Tissues working extra hard release more CO2. The decreased pH in these specific areas causes hemoglobin to release its O2 to be used by those tissues. This shifts the O2 dissociation curve to the right since the O2 saturation is lower
