Human Body

Sub-System	Body parts	Function	Common Diseases
Cardiovascular System	Heart, Blood vessels (Arteries, Veins and Capillaries), Blood	Flow of blood (and nutrients) throughout body	Narrowing of the arteries, Heart attack, Abnormal heart rhythms or arrhythmias, Heart failure, Congenital heart disease
Digestive System	Alimentary Canal (Oral Cavity, Esophagus, Stomach, Small Intestine, Large Intestine, Anus), Liver, Pancreas, Salivary glands, Teeth, Tongue	Digestion and absorption of food	celiac disease, inflammatory bowel disease, irritable bowel syndrome
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)	Hypothyroidism, Osteoporosis, Prediabetes, Type 1 & 2 Diabetes
Female Reproductive System	Uterus, Ovaries, Vulva, Labia, Clitoris	Formation of eggs and bearing the fetus during development	Cervicitis, Dysmenorrhea, Hysterectomy, Mastectomy
Immune System	Antibodies, white blood cells, tonsils, and thymus	Natural body system to fight infections	Type 1 diabetes, rheumatoid arthritis, lupus
Integumentary System	skin, hair, nails, and exocrine glands	Protects from environment, chemicals, UV light etc.	Acne and warts, chronic skin conditions
Lymphatic System	Bone marrow, spleen, thymus gland, lymph nodes, and the tonsils	Helps body to get rid of the toxins, waste and other unwanted materials	Glandular fever, Hodgkin’s disease, Tonsillitis
Male Reproductive System	Penis, Testes	Formation of sperms and semen, and fertilizing the female	Hypospadias, Hydrocele, Varicocele, Cryptorchidism
Muscular System	Muscles (Skeletal Muscles, Smooth muscles, Cardiac Muscles)	Motor power for movements of body parts	Muscular Dystrophy, Cerebral Palsy, Dermatomyositis, Myasthenia Gravis
Nervous System	Brain, Spinal Cord, Nerves, Nerve Endings	Control and Coordination of all body functions (Nervous coordination	Alzheimer’s Disease, Bell’s Palsy, Cerebrovascular Accident, Encephalitis
Respiratory System	Lungs, Nose, Trachea, Bronchi, Bronchioles, Alveolar sacs, Alveoli	Gaseous exchange	Chronic obstructive pulmonary disease pneumonia, influenza
Skeletal System	Bones, Associated cartilages, Joints	Strength, Support, Shape, Protection, Leverage, Cell Production	Osteoarthritis, Rheumatoid Arthritis and Osteoporosis
Urinary System	Kidneys, Ureters, Urinary bladder, Urethra	Regulation of body’s internal environment, and production and excretion of urine	cystitis, pyelonephritis, urethritis