Body Systems and Major Organs

The human body consists of 10 System viz. Skeletal System, Muscular System, Nervous System, Endocrine System, Respiratory System, Cardiovascular system, Lymphovascular system, Digestive System, Excretory System and Reproductive System.
 
 
 
Different organs can work together to perform a common function and works as an integrated unit called organ system or body system

Body Systems and Major Organs

The following table gives detailed information about different body systems and organs associated with them.
S.No.
Body System
Major Organs & Structure of the system
1.
Skeletal System
All the body’s bones, cartilage, joints, ligaments that connect them.
2.
Muscular System
The body’s voluntary muscular muscle under consign control, Involuntary muscle working unconsciously (smooth muscle).
3.
Nervous System
The major organs in the brain, sense organs (Eye, ear, taste buds, smell & touch receptors), nerves and the spinal cord.
4.
Endocrine System
Hormones producing glands (pituitary gland, thyroid gland, parathyroid glands, Adrenal, pancreas, thymus), parts of testes & ovaries, small areas of tissues in the intestine.
5.
Respiratory System
Lungs, bronchi (tubes to the lungs), trachea (windpipe), mouth, larynx, nose, diaphragm.
6.
Cardiovascular system
Heart, artery, veins, capillaries, blood vessels.
7.
Lymphovascular system
Structure involved in circulation of lymph and body’s defence against diseases including lymph nodes, lymph vessel, spleen, tonsil, adenoids, thymus.
8.
Digestive System
Mouth, tongue, teeth, salivary gland, Esophagus, stomach, small intestine, liver, gall bladder, pancreas.
9.
Excretory System
Sweat glands, large intestine, kidney, uterus, bladder, and urethra.
10.
Reproductive System
Male: prostate gland, seminal venue, urethra, testes, penis
Female: fallopian tube, uterus, cervix, ovaries, vulva

 

Body Systems Functions

1. Skeletal System

  • protects organs
  • provides shape, support
  • stores materials (fats, minerals)
  • produces blood cells
  • allows movement

2. Muscular System

  • Allows for movement by contracting

3.  Nervous System

  • gathers and interprets information
  • responds to information
  • helps maintain homeostasis

4. Endocrine System

  • Regulates body activities using hormones. 
  • Slow response, long lasting

5. Respiratory System

  • Takes in oxygen and removes carbon dioxide and water

6. Cardiovascular system

  • Transport materials to and from cells

7. Lymphovascular system

  • stores and carries WBC’s that fight disease
  • collects excess fluid and returns it to blood (2nd circulatory system-reaches places other one can’t – between cells)

8. Digestive System

  • take in food (ingestion)
  • digest food into smaller molecules and absorb nutrients
  • remove undigestable food from body (feces)

9. Excretory System

  • removes waste products from cellular metabolism (urea, water, CO2)
  • filters blood 
10. Reproductive System
  • Allows organisms to reproduce which prevents their species from becoming extinct. 

 

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