Which neurotransmitter is released when the brain’s “reward system” is activated? dopamine norepinephrine serotonin epinephrine

Why is important to cover your hands and feet in cold weather? a. they are furthest from your heart. b. they are often last to receive blood flow. c. they can suffer from tissue damage in cold weather. d. all of the above

Blank is the growth of adnormal cells in the tissues of the body

Which of the following leukocyte is not correctly matched with its function? -basophils: inflammation -lymphocytes: immune response against viral infections -monocytes: develop into macrophage -neutrophils: produce antibodies