We need blood because it carries oxygen and helps us sustain life. The organ that pushes blood through the body is the heart.
Answer:
True
Explanation:
In inhibitory postsynaptic potentials, the opening of chlorine and potassium channels generally occurs so that chlorine enters, with a negative charge, and potassium leaves, with a positive charge. The synergistic effect of this ionic flow is the hyperpolarization of the cell, making it difficult for an action potential to occur.
Answer:
The second one is correct
Explanation:
A leukocyte is responsible for the immune system
