What is the principle defect in Parkinson disease?
A. There is a loss of neurons in the reticular activating system that secrete acetylcholine.
B. There is a demyelination of alpha motor neurons important for posture and balance.
C. Neurons of the substantia nigra degenerate and there is reduced delivery of dopamine to the basal nuclei.
D. Autoimmune destruction occurs in neurons in the motor regions of the cerebral cortex.
E. Damage to neurons of the cerebellum reduces the coordination of muscle movements.
C
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Which of the following is correct regarding fructose?
A) It is a disaccharide. B) It is a polysaccharide. C) It is the most important metabolic fuel in the body. D) It is obtained only from food. E) It is an isomer of glucose.
The ability of a contracted muscle to recoil to its resting length when the applied tension is removed is called ________.
Fill in the blank(s) with the appropriate word(s).
Define systole and diastole. Which heart chambers are usually referenced when these terms are used?
What will be an ideal response
Functions of plasma proteins include
A. body temperature regulation. B. serving as a source of energy for metabolism. C. regulation of osmotic pressure. D. transportation of O2 and CO2.