The Body is Organised in four structural levels
Cells
Tissues
Organs
System
Description of Cell
The Basic Building blocks/Carries out different function
Description of Tissue
A group of cells similar in structure and functions
Description of Organs
Different tissues working together
Eg. Heart is made up of muscle tissue and nervous tissue
Description of System
Group of organs working together for a common purpose
Eg. Heart and blood vessels make up the circulatory system
Four different types of tissues
Epithelium
Connective
Muscular
Nervous
Structure of Epithelium
Very closely joined together.
Shape depends on particular
tissue.
Function of Epithelium
Protects undergoing tissue
Structure of Connective
Cells are separated by large amount of non-cellular material, called matrix
Function of Connective
Provides support for the body and helps to hold all the body parts together
Sub-Heading for Muscular
Skeletal
Involuntary
Cardiac
Structure of Nervous
- Nerve cells called Neurones
- Long projections of the body of the cell
Function of Nervous
Messages are carried along the projection to other cells, when stimulater