Systems of the Human Body

Body system is an organized group of tissue that forms a particular function. 

Main Systems of the Human Body are

Name	Components	Role
Skeletal System	Bones, Associated cartilages, Joints	Strength, Support, Shape, Protection, Leverage, Cell Production
Nervous System	Brain, Spinal Cord, Nerves, Nerve Endings	Control and Coordination of all body functions (Nervous coordination)
Digestive System	Alimentary Canal (Oral Cavity, Esophagus, Stomach, Small Intestine, Large Intestine, Anus), Liver, Pancreas, Salivary glands, Teeth, Tongue	Digestion and absorption of food
Lymphatic System	Lymph vessels, Central lymphoid tissue, Peripheral Lymphoid Organs, Lymphocytes	Drainage and Protection
Cardiovascular System	Heart, Blood vessels (Arteries, Veins and Capillaries), Blood	Flow of blood (and nutrients) throughout body
Integumentary system	Skin, Hair, Nails	Forms the external body covering and protects deeper tissues from injury.
Respiratory System	Lungs, Nose, Trachea, Bronchi, Bronchioles, Alveolar sacs, Alveoli	Gaseou exchange
Muscular System	Muscles (Skeletal Muscles, Smooth mucles, Cardiac Muscles)	Motor power for movements of body parts.
Endocrine System	Endocrine glands (Pituitary gland, Thyroid gland, Parathyroid glands, Adrenal glands, Pancreas (endocrine part), Testes (endocrine part), Ovary (endocrine part), Liver (endocrine part))	Regulation of body functions (Chemical coordination)
Urinary System	Kidneys, Ureters, Urinary bladder, Urethra	Regulation of body’s internal environment, and production and excretion of urine
Female Reproductive System	Uterus, Ovaries, Vulva, Labia, Clitoris	Formation of eggs and bearing the fetus during development
Male Reproductive System	Penis, Testes	Formation of sperms and semen, and fertilizing the female