acute headache. diagram learning the acute headache as a result a process of the brain and consequences expanded the blood vessel

neurotransmitter nervous system brain nerve cell synapse hippocampus histamine human body draw anatomy antihistamine antihistamines essential allergic allergies basophils cerebellum cerebral cortex decreased conscious dopamine healthcare immune responses inflammatory response amygdala medical medulla nucleus accumbent pathogens physiological posterior pituitary laziness receiving receptor rhinitis spinal cord substantial nitrogenous treatment acute headache diagram learning result process consequences expanded blood vessel headache