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Organ Systems

Human Body Systems

System/Medical SpecialtyStructuresFunctions
Musculoskeletal system Orthopedics Orthopedic surgery bones, joints, muscles Skeleton supports and protects the body, forms blood cells, and stores minerals. Muscles produce movement.
Cardiovascular system Cardiology Heart, arteries, veins Pumps blood throughout the entire body to transport nutrients, oxygen, and wastes.
Blood (Hematic) system Hematology Plasma, erthrocytes, leukocytes, patelets Transports oxygen, protects against pathogens, and controls bleeding.
Lymphatic system Immunology Lymph nodes, lymphatic vessels, spleen , thymus gland, tonsils Protects the body from disease and invasion from pathogens.
Respiratory system Otorhinolaryngology Pulmonology Thoracic surgery Nasal cavity, pharynx, larynx, trachea, bronchial tubes, lungs obatains oxygen and removes carbon dioxide from the body.
Digestive or Gastrointestinal system Gastroenterology Proctology Oral cavity, pharynx, esophagus, stomach, small intestine, colon, liver, gallbladder, pancreas, salivary glands Ingest, digests, and absorbs nutrients for the body
Urinary system Nephrology Urology Kidneys, ureters, urinary bladder, urethra Filters waste products out of the blood and removes them from the body.
Female Reproductive system Gynecology Obestetics Ovary, fallopian tubes, uterus, vagina, vulva, breasts Produces eggs for reproduction and provideds place for growing baby
Integumentary system Dermatology Skin, hair, nails, sweat glands, sevaceous glands forms protective two-way barrier and aids in temperature regulation
Male Reproductive system Urology Testes, epididymis, vas deferens, penis, seminal sesicles, prostate gland, bulbourethral gland Produces sperm for reproduction
Endocrine system Endocrinology Pituitary gland, pineal gland, thyroid gland, parathyroid glands, thymus gland, adrenal glands, pancreas, ovaries, testes Regulates metabolic activities of the body
Nervous system Neurology Neurosurgery Brain, spinal cord, nerves Receives sensory information and coordinates the body's response
Special Senses Ophthalmology eye Vision
Otorhinolaryngology ear Hearing and balance
Sagittal Plane (Median Plane) Divides the body left and right
Frontal Plane (Coronal Plane) Divides the body front and back
Transverse Plane (Horizontal Plane) Divides the body in upper and lower portions
Trunk the torso
Cephalic region The entire head
Cervical region The neck (connects the head to the trunk)
Thoracic region The chest
Abdominal region The stomach area (genital)
Pelvic region The pelvic area below the belly button (genital)
Pubic region The genital area
Dorsum The back area
Vertebral region The spine
Gluteal region The buttock
Brachial region The arms
Crual region The legs
Upper extremities (UE) Attach to the trunk
Lower extemities (LE) Attach to the trunk
Dorsal body cavity Cranial cavity Spinal cavity
Ventral body cavity Thoracic cavity Abdominopelvic cavity Abdominal cavity Pelvic cavity
Cranial cavity Brain
Spinal cavity Spinal cord
Thoracic cavity Pleural cavity: Lungs Percardial cavity: Heart Medistinum: Heart, esophagus, trachea, thymus gland, aorta
Abdominal cavity Stomach, spleen, liver, gallbladder, pancreas, and portions of the small intestines and colon
Pelvic cavity Urinary bladder, urethra, and portions of the small intestines and colon Female: uterus, ovaries, falopian tubes, vagina Male: prostate gland, seminal vesicles, portion of the vas deferens