DIGESTIVE SYSTEM The digestive system is a system where your food goes through. It begins with you eating your food, which goes through your mouth. Saliva contains something called enzyme which breaks down your food. The food then goes down the Oesophagus, a tube that runs from your mouth, all the way to your stomach.…
The cardiovascular system or circulatory system is a system that moves nutrients, gases, and wastes between cells helps fight diseases and transports blood throughout the body (Circulatory System). The main components of the human cardiovascular system include the heart, blood, and various blood vessels. There are several different circuits contained in the cardiovascular system. One…
Background: As members of the class Amphibia, frogs may live some of their adult lives on land, but they must return to water to reproduce. Eggs are laid and fertilized in the water. On the outside of the frog’s head are two external nares, or nostrils; two tympani (tympanic membranes), or eardrums; and two eyes,…