Fill in the blank: Excitation- coupling represents the physiologic mechanism whereby an electrical discharge at the muscle initiates chemical events at the cell surface, releasing intracellular Ca2+ and ultimately causing muscle action.

answer; polycythemia is the correct answer;

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.