- Created by: T.Jayaswal
- Created on: 10-08-21 12:20
An organ is a group of different tissues that work together to do a particular job. Organs are grouped together into organ systems (e.g. circulatory system, and digestive system).
Layers of organisation:
The human body is made up of many cells, so it is a multi cellular organism. A multicellular organism has five layers of organisation, called a hierarchy.
Organelles- tiny structures which carry out various functions within a cell.
Cells- the basic unit of all living organisms.
Tissues- groups of similar cells that work together to perform a specific function. For example, brain tissue, muscle tissue, and heart tissue.
Organs- different tissues working together to carry out a particular function.
Organ system- a group of organs that work together to do a job.
In an organ, different tissues…