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Organs
Organ system‏‎ 



Here are some examples of organ systems:


  • circulatory system.
  • respiratory system.
  • digestive system.
  • nervous system.
  • reproductive system.
  • leaf canopy.


The human body is made up of several organ systems that work together as one unit. Ten major organ systems of the body are listed below, along with several organs that are associated with each system.



Organ Systems


1. Circulatory System:Edit

The main function of this system is to transport nutrients and gasses to cells and tissues throughout body. This is accomplished by the circulation of blood.

Cardiovascular: This system is comprised of the heart, blood, and blood vessels. The beating of the heart drives the cardiac cycle which pumps blood throughout body.



Cardiovascular organs: heart, blood vessels, blood



Lymphatic: This system is a vascular network of tubules and ducts that collect, filter, and return lymph to blood circulation. As a component of the immune system, the lymphatic system produces and circulates immune cells called lymphocytes.



Lymphatic organs: lymph vessels, lymph nodes, thymus, spleen, tonsils Biology

  1. Human Body Systems
  2. Immune System
  3. System Systems
  4. Disgestive System

2. Digestive System:Edit

This system breaks down food polymers into smaller molecules to provide energy for the body. Digestive juices and enzymes are secreted to break down the carbohydrates, fat, and protein in food.

Primary organs: mouth, stomach, intestines, rectum



Accessory organs: teeth, tongue, liver, pancreas

3. Endocrine System:Edit

This system regulates vital processes in the body including growth, homeostasis, metabolism, and sexual development. Endocrine organs secrete hormones to regulate body processes.

Endocrine structures: pituitary gland, pineal gland, thymus, ovaries, testes, thyroid gland

4. Integumentary System:Edit

This system protects the internal structures of the body from damage, prevents dehydration, stores fat and produces vitamines and hormones.

Integumentary structures: skin, nails, hair, sweat glands


5. Muscular System:Edit

This system enables movement through the contraction of muscles.

Structures: muscles

6. Nervous System:Edit

This system monitors and coordinates internal organ function and responds to changes in the external environment.

Structures: brain, spinal cord, nerves

(See Neurosystem for more detail)

7. Reproductive System:Edit

This system enables the production of offspring through sexual reproduction. It is comprised of male and female reproductive organs and structures which produce sex cells and ensure the growth and development of offspring.

Male organs: testes, scrotum, penis, vas deferens, prostate Female organs: ovaries, uterus, vagina, mammary glands

8. Respiratory System:Edit

This system provides the body with oxygen via gas exchange between air from the outside environment and gases in the blood.

Respiratory organs: lungs, nose, trachea, bronchi

9. Skeletal System:Edit

This system supports and protects the body while giving it shape and form.

Structures: bones, joints, ligaments, tendons, cartilage

10. Urinary/Excretory Systems:Edit

This system removes wastes and maintains water balance in the body.

Structures: kidneys, urinary bladder, urethra, ureters



It is important to keep in mind that these organ systems don't just exist as individual units. The final product of these cooperating systems is one unit called the body. Each system depends on the others, either directly or indirectly, to keep the body functioning normally. 

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