Body systems

• endocrine: regulation of body processes through hormone production
• respiratory: gas exchange between the internal and external environment
• digestive: physical and chemical breakdown of food to allow absorption of nutrients
• reproductive: production of reproductive cells that will generate offspring
• integumentary: protection against the external environment and regulation of temperature
• muscular: voluntary and involuntary movement of skeletal muscles.
• nervous: processing center for sensory input, using the input to elicit appropriate responses
• cardiovascular: circulation of blood which transports gases, nutrients, hormones and wastes
• lymphatic: circulation of lymph, which maintains fluid balance and helps fight infection
• urinary: filtration of blood and excretion of wastes from the body
• skeletal: support and protection of many internal organs
• 1.STRUCTURAL ORGANISATION OF MULTICELLULAR ORGANISMS: organelles are specialised for specific functions within the cell, and their activities are coordinated by the nucleus.
• 2.STRUCTURAL ORGANISATION OF MULTICELLULAR ORGANISMS: specialised cells that performs similar functions are organised into tissues
• 3.STRUCTURAL ORGANISATION OF MULTICELLULAR ORGANISMS: grouped tissues that perform a specific function are called organs
• 4.STRUCTURAL ORGANISATION OF MULTICELLULAR ORGANISMS: organs are grouped in to organ systems
• 5.STRUCTURAL ORGANISATION OF MULTICELLULAR ORGANISMS: numerous organ systems make up a functioning organism