Organ System of Human Body

This is an overview of the organ systems of the entire human body. This concise article will help you quickly review human physiology, including all the body’s major systems.

The Organisation of the Human Body

Chemical Level
↓
Cellular Level ↠ Structural and functional unit of body
↓
Tissue Level ↠ Group of Similar Cells (including
intercellular space) performing
similar functions
↓
Organ Level ↠ Group of different tissues having
certain shape
↓
Organ System Level ↠ Group of same functioning organs
↓
Body ↠ All the organ system undercovered by skin
called body

Organ Systems of Human Body

There are 11 distinct organ systems in human beings, which form the basis of human anatomy and physiology.

The 11 organ systems include:

  1. Integumentary system
  2. Skeletal system
  3. Muscular system
  4. Circulatory system
  5. Lymphatic system
  6. Respiratory system
  7. Digestive system
  8. Urinary system
  9. Reproductive system
  10. Excretory System
  11. Nervous system

1. Integumentary System

Exterior protection of body
Component organs: skin, hair, and nails

2. Skeletal System

Structural support and protection
Production of blood cells
Component organs: bones, cartilage, ligaments, joints, and tendons.

3. Muscular System

Movement of body, production of heat
Component organs: Skeletal muscles(Striated), Smooth muscles and Cardiac muscle

4. Circulatory System

/cardiovascular/vascular system

Circulate blood to transport nutrients, waste, hormones, O2, CO2, and aid in maintaining pH and temperature.
Component organs: Blood, Heart, Arteries, Veins, Capillaries

5. Lymphatic System

Return lymph to the bloodstream, aid immune responses, form white blood cells
Component organs: Lymph, lymph nodes, lymph vessels, tonsils, spleen, thymus

6. Respiratory System

Breathing: exchange of oxygen and carbon dioxide
Component organs: Nose, Mouth, Paranasal Sinuses, Pharynx, Larynx, Trachea, Bronchi, Lungs and Thoracic Diaphragm.

7. Digestive System

Digestion: breakdown and absorption of nutrients, excretion of solid wastes
Component organs: teeth, tongue, salivary glands, oesophagus, stomach, liver, gallbladder, pancreas, small intestine, large intestine, rectum and anus

8. Urinary System

Maintain fluid and electrolyte balance, purify the blood and excrete liquid waste (urine)
Component organs: kidneys, ureters, bladder and urethra

9. Reproductive System

Sex organs involved in reproduction
Component organs:
Male: Penis, Scrotum, vas deferens, testes, seminal vesicles and prostate
Female: Vagina, Uterus, Fallopian tube, Overy

10. Excretory System

Urinary System ↠ Excrete urine

Excrete Faeces:
Rectum
Anal Canal
Anus

Sweat gland ↠ Excrete sweat

11. Nervous system

Sensing and processing information, controlling body activities.

  1. CNS
    1. Brain
    2. Spinal cord
  2. PNS
    1. Autonomic nerve
      1. Visceral nerve
      2. Somatic nerve
    2. Cerebro-spinal nerve
      1. Spinal nerve
      2. Cerebral nerve

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