Circuatory System Flashcards
1
Q
What type of system is in mammals
A
- closed, double circulatory system
2
Q
How many times does the blood pass by the heart
A
Twice
3
Q
What are the advantages of blood passing the heart twice
A
- oxygenated and deoxygenated blood don’t mix
- gas exchanged maximised because lungs re ice only blood with low and high o2 conc
- separate circuits can operate at different pressures