why human beings are complex organisms
DESCRIPTION
science form 1TRANSCRIPT
WHY HUMAN BEINGS ARE COMPLEX ORGANISMS1 Lycos
Deborah Kwek
Thum Jie En
Jessie Gan
Sharifah Nadia
CONTENTS
1) Human cells
2) Tissues
3) Organs
4) System
5) Organism
6) Conclusions
CELL ORGANISATION
• CELL: THE SMALLEST UNIT OF LIFE IN OUR BODY
• TISSUE: MADE UP OF A GROUP OF CELLS
• ORGAN: MADE UP FROM A FEW DIFFERENT TYPES OF TISSUES
• SYSTEM: MADE UP OF A FEW ORGANS
• ORGANISM: MADE UP OF DIFFERENT SYSTEMS THAT ARE COORDINATED TO CARRY OUT VARIOUS FUNCTIONS
TYPES OF SIMPLE CELLS IN HUMAN BODY
• Epithelial cells
• Nerve cells
• Sperms
• Ovum
• Red blood cells
• Muscle cells
• White blood cells
• Bone cells
• Cardiac cells
TYPES OF CELLS
Epithelial cells: To cover our body against diseases
Nerve cells: Conduct nerve impulses throughout the body
Sperm cells
Ovum
Reproductive cells: To unite and form a baby
Red blood cells: To carry oxygen to other parts of the body
Muscle cells: To allow movement by contracting
White blood cells: To kill bacteria
Bone cells: To support our body
Cardiac cells: To pump blood
TISSUES
Made up of the same type of cells that work together to perform a function.
Muscle Tissue
Contracts and causes body movement.
Epithelial Tissue
Covers the body and lines all organs
Bone Tissue
It protects and supports our body
Nerve Tissue
To send messages to our brain
ORGANS
SYSTEM
Digestive System
CirculatorySystem
SkeletalSystem
RespiratorySystem
ORGANISMS
Cell Tissue Organ System Organisms
• All systems in the body work together to make up a multicellular organism.• These systems do not work independently but work with one another so that the organism functions as a whole.• The organisation of cells can also be represented in the form of a ladder of hierarchy from the very simple to the more complex.
CONCLUSIONS
• Human beings have various types of cells which are specialised to perform specific function which is known as division of labour.
• Division of labour among cells, tissues, organs and systems ensures that the organism functions efficiently.
THE END