Based on gay-lussac's law, which of the following statements is true for an ideal gas at constant volume and mole amount?
the number of collisions is independent of pressure.
the number of collisions decreases with increase in pressure.
pressure is directly proportional to the absolute temperature.
pressure is inversely proportional to the absolute temperature.

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.