2.2.2d Organ System

  1. Different organ work together form an organ system.
  2. The human body has eleven different organ system, namely the
    1. Circulatory System
    2. Digestive System
    3. Reproductive System
    4. Endocrine System
    5. Nervous System
    6. Respiratory System
    7. Muscular System
    8. Skeletal System
    9. Excretory System
    10. Lymphatic System (Immune System)
    11. Integumentary System

Circulatory System

Organ: Heart, Blood Vessel
Function: Transport nutrients, gases and wastes to and from cells, helps fight diseases and helps stabilize body temperature and pH to maintain homeostasis.

Digestive System 

Organ: Mouth, Oesophagus, Stomach, Duodenum, Small Intestine, Large Intestine
Function: Breaks down food in the body, into a form that can be absorbed.

Reproductive System

Organ: Males: Testes, penis; Females: Ovaries, uterus, vagina
Function: Reproduce offspring.

Endocrine System

Organ: Pituitary, Thyroid, Adrenal gland, Pancreas, Ovary (female only), testis (male only)
Function: Secrets hormone. Hormones are chemical that play a role in regulating metabolism, growth, development and puberty, and also plays a part in determining mood.

Nervous System

Organ: Brain, Spinal Cord, Peripheral Nerves, Sense Organs
Function: Conduct impulses the the body, spinal cord and brain.

Respiratory System

Organ: Nose, Trachea, Lungs
Function: Allow gas exchange.

Muscular System

Organ: Muscle
  • Initiates heart beat.
  • Working with the skeletal system in movement and locomotion.

Skeletal System

Organ: Bones, Tendons, Ligaments, Cartilage

  • Supports the body.
  • Protects the internal organ.
  • Make red and white blood cells.
  • Plays important role in movement.

Excretory System

Organ: Kidneys, Skin, Lung
Function: Eliminates the waste products of metabolism.

Lymphatic System (Immune System)

Organ: Lymphatic Nodes, Lymphatic Vessels, Spleen, Thymus Galnd

  • Remove the interstitial fluid from tissues.
  • Absorbs and transports fatty acids and fats to the circulatory system.
  • Produces immune cells.

(Images by BruceBlaus shared under the Creative Commons Attribution 3.0 Unported license.)

Integumentary System

Organ: Skin
Function: Protects the body from damage,

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