The human body systems work together to allow animals, such as goats, gazelles, and manatees, to eat and digest their food. When the goat eats, its digestive system breaks down the food into nutrients that are absorbed by the circulatory system and transported throughout the body. The muscular system and nervous system work together to allow the goat to chew and swallow its food, while the cardiac system pumps blood that carries nutrients through the body. The endocrine system also plays an important role in digestion, producing hormones that regulate the release of digestive enzymes. The gazelle and manatee have similar systems, although their diets and digestive systems may be different due to their habitats and feeding behaviors.
