Organs in Animals
Multicellular organisms usually contain differentiated cells, adapted for specific functions
Tissues - consist of similar cells. (epithelial, glandular, muscular)
Organs - contain different tissues working together to carry out a particular functions (heart, lungs, stomach)
Organ systems - contain different organs. They work together in an organism. (respiratiory, circulatory, digestive)
During the development of a multicellular organism, cells differentiate so that they can carry out different functions.
Differentiation is the process by which a cell becomes a specialised type of cell
A tissue is a group…