The energy needed to raise the temperature of 1 kilogram of water through 1 °C, equal to one thousand small calories and often used to measure the energy value of foods
Answer: In the mouth and pharynx, it consists of skeletal muscle that aids in swallowing.In the rest of the digestive tract, it consists of smooth muscle three layers in the stomach two layers in the small large intestines and associated nerve fibers.
I think the answer is velocity?
