Answer:
Hemoglobin is the iron-containing protein found in all red blood cells (RBCs) that gives the cells their characteristic red color. Hemoglobin enables RBCs to bind to oxygen in the lungs and carry it to tissues and organs throughout the body.
Explanation:
Fart lak is wrong took it on edge
I would say D for this one mostly because I know for sure most of these answers are right.
Answer:
1 = veins
2 = cardiovascular system
3 = fibrin
4 = target heart rate
5 = maximal heart rate
Answer:Neurons, or nerve cells that carry nerve impulses, are made up of the cell body, the axon, and several dendrites. Signals move across the synapse, the place where the axon of one neuron meets the dendrite of another, using chemicals called neurotransmitters
Explanation:
