Parkinson's disease often involves the degeneration of neurons that produce which are located in a brain area called the question 5 options: 1) serotonin; somatosensory cortex 2) dopamine; substantia nigra 3) acetylcholine; thalamus 4) norepinephrine; pons

What is a difference between systemic and pulmonary circulation? a. systemic circulation carries oxygenated blood to the lungs and pulmonary circulation carries deoxygenated blood to the body. b. systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. c. systemic circulation carries deoxygenated blood to the body and pulmonary circulation carries oxygenated blood to the lungs. d. systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.