6. pulse rate is a measure of ....
- heart rate
- blood circulation
7. muscles need energy from respiration to ....
- contract
- move
- stay strong
8. anaerobic respiration uses oxygen ?
- False
- True
9. anaerobic respiration produces
- water
- lactic acid
- carbon
10. when heart rate increases the presure of the blood also increases ?
- True
- False
11. red blood cells transport .......... from the lungs to the cells in the body ?
- oxygen
- energy
12. platelets are small fragments of ?
- skin
- cells
- blood
13. plasma is a ........... that carries everything about ?
- gas
- liquid
- solid
