Protocell e. Cellular mass 8. Brain b. Lungs c. Tympanic membrane e. Capillary beds 9. When it is warm outside, and your body temperature would have a tendency to rise, a number of mechanisms are stimulated to keep your temperature normal. Blood vessels dilate to increase heat loss through your extremities.
Sweat glands produce sweat.
Body hairs stand on end. Blood vessel constrict to increase heat loss through your extremities. Both c and d above are correct. Fuel for the human body can be stored in several forms. Glucose can be converted to glycogen by glucagon to be stored in the liver.