5. 5
• Atoms
– made up of
subatomic particles
• Molecules
– 2 or more atoms
• Macromolecules
– small molecules
joined together
Levels of Organization
Chemical
6. • Macromolecules
combine to form cells
• Basic structural and
functional unit of the
body
Levels of Organization
Cellular
7. • Group of cells working
together to perform a
function called Tissue
• 4 basic types
–Epithelial Tissue
–Connective tissue
–Muscle Tissue
–Nerve Tissue
Levels of Organization
Tissue
8. • 2 or more tissues joined together with a specific
function and shape
Levels of Organization
Organ
9. • Related organs with a
common function
• 11 systems
Levels of Organization
Systems
10. Integumentary system
• Components
– Skin
– Hair
– Glands
• Functions
– Protection
– Regulates body
temperature
– Eliminates waste
– Vitamin D
– Sensations
11. Skeletal system
• Components
– Bones
– Joints
– Cartilage
• Functions
– Support
– Protection
– Body movement
– Produces blood cells
– Stores minerals & fats
20. Reproductive system
• Components
– ovaries
– testes
– associated structures
• Functions
– produce gametes
– hormone regulation of
reproduction
21. • Life depends on five (5) environmental factors:
• Water
• Food
• Oxygen
• Heat
• Pressure
Maintenance of Life
22. • Water
- most abundant substance in body
- required for metabolic processes
- required for transport of substances
- regulates body temperature
• Food
- provides necessary nutrients
- supplies energy
- supplies raw materials
Requirements of Organisms
23. • Oxygen (gas)
- one-fifth of air
- used to release energy from nutrients
• Heat
- form of energy
- partly controls rate of metabolic reactions
• Pressure
- application of force on an object
- atmospheric pressure – important for breathing
- hydrostatic pressure – keeps blood flowing
Requirements of Organisms
24. Touch your hand this is -Integuementary system
When you are detailing visual aid to Dr. Your skeleton &
muscular system supporting you
When you are convincing chemist, your Nervous system &
Circulatory system increase their function
When Dr. Asked any question - your endocrine system is
working
When you are doing pranayam -your respiratory system is
working
25. When you are eating burger as lunch -your digestive
system is working
When you stopped your bike at road side for natural call
-your excretory system is working
When you are eating junk food - your lymphatic system
protects you
When you want to multiply -your reproductive system is
working
26. Now I Know That
Our body is developed by atoms-molecules –
macromolecules – organelle
CELL-TISSUES-ORGAN
11-ORGAN SYSTEM
Five Components to live (Water-Food-Oxygen-
Heat-Pressure