Organs are the body's vital structures, using complex structures to perform specialized tasks and connect bodily systems to each other. Learn more about how different organs look and work.
Anatomy of the middle ear
Anatomy of the Middle Ear
Medically reviewed by Benjamin F. Asher, MD
Profile of person with short dark hair and brown skin, smelling a melon
Olfactory Epithelium: Anatomy, Function, and Treatment
Medically reviewed by Benjamin F. Asher, MD
Gray profile image showing submandibular gland in orange
Submandibular Gland: Anatomy, Function, and Treatment
Medically reviewed by Benjamin F. Asher, MD
Ventricular system of the brain
Ventricular System: Anatomy, Function, and Treatment
Medically reviewed by Nicholas R. Metrus, MD
Nasal cavity
Anatomy of the Nasal Cavity
Medically reviewed by William Truswell, MD
The vestibular system and cochlea of the ear
The Vestibule of the Ear
Medically reviewed by John Carew, MD
The lining of the jejunum
Jejunum: Anatomy, Function, and Treatment
Medically reviewed by Priyanka Chugh, MD
The choroid plexus lines the brain and produces CSF
What Is the Choroid Plexus?
Medically reviewed by Nicholas R. Metrus, MD
The brainstem is continuous wth the spinal cord
What to Know About the Brainstem
By Heidi Moawad, MD
outer ear
Outer Ear: Anatomy, Location, and Function
Medically reviewed by Benjamin F. Asher, MD
human ear anatomy
The Inner Ear: Anatomy, Location, and Function
Medically reviewed by Benjamin F. Asher, MD
Midbrain Is Located at the Top of Your Brainstem
The Anatomy of the Midbrain
Medically reviewed by Diana Apetauerova, MD
Esophagus illnesses - stock photo
What You Should Know About the Esophagus
Medically reviewed by Benjamin F. Asher, MD
Blue x-ray image showing ureters running from the kidney to the bladder
Ureters: Anatomy, Function, and Treatment
Medically reviewed by Monique Rainford, MD
X-ray image of the breast, showing the internal breast in bright, neon colors
Mammary Glands: Anatomy, Function, and Treatment
Medically reviewed by Monique Rainford, MD
Tasting
Taste Buds: Anatomy, Function, and Treatment
Medically reviewed by Benjamin F. Asher, MD
A white-presenting person's earlobe under a head of short, black and gray hair
Anatomy of the Earlobe
Medically reviewed by Benjamin F. Asher, MD
The eardrum sits between the outer ear and middle ear
Anatomy of the Eardrum
Medically reviewed by Isaac O. Opole, MD, PhD
Primarily black and white photo of the human neck. There are four red and yellow spots near the center of the neck indicating the location of the parathyroid.
Parathyroid: Anatomy, Location, and Function
Medically reviewed by Mohamad Hassan, PT, DPT
biliary system
The Anatomy of the Biliary System
Medically reviewed by Lauren Schlanger, MD
Bone marrow under the microscope
Bone Marrow: Anatomy, Function, and Treatment
Medically reviewed by Anita C. Chandrasekaran, MD, MPH
The lens of the eye
The Lens: Anatomy, Function, and Treatment
Medically reviewed by Johnstone M. Kim, MD
The choroid plexus in the ventricles of the brain
Choroid Plexus Anatomy
By Kristin Hayes, RN
Thalamus and hypothalamus in the diencephalon of the brain
Diencephalon
Medically reviewed by Kashif J. Piracha, MD
Side view of female doctor examining senior patient in medical clinic
Understanding the 11 Body Organ Systems
Medically reviewed by Michael Menna, DO
Salivation
Parotid Gland: Anatomy, Location, and Function
Medically reviewed by Jenny Sweigard, MD
Bladder anatomy
Bladder: Anatomy, Location, and Function
Medically reviewed by Rony Kampalath, MD
lungs anatomy
Anatomy of the Lungs
Medically reviewed by Sanja Jelic, MD
Male testes, illustration
The Anatomy and Function of the Testes
Medically reviewed by Chris Vincent, MD
Human Thymus Anatomy
Thymus: Anatomy, Function, and Treatment
Medically reviewed by Kashif J. Piracha, MD
Checking the Lymph Nodes
The Anatomy of the Thyroid Gland
Medically reviewed by Elizabeth Molina Ortiz, MD, MPH
X-ray illustrating the anatomy of the diaphragm
How Your Diaphragm Helps You Breathe
Medically reviewed by Rony Kampalath, MD
Ear anatomy
Anatomy and Function of the Cochlea
Medically reviewed by Keri Peterson, MD
Female human ear closeup - stock photo
The Anatomy of the Ear
Medically reviewed by Jenny Sweigard, MD
The fight against wrinkles
Cornea: Anatomy, Function, and Treatment
Medically reviewed by Isaac O. Opole, MD, PhD
Close-up of an eye showing the details in the iris and sclera.
The Anatomy of the Iris
Medically reviewed by Jason DelCollo, DO
adrenal glands
The Anatomy of the Adrenal Gland
Medically reviewed by Elizabeth Molina Ortiz, MD, MPH
gallbladder
The Anatomy of the Gallbladder
Medically reviewed by Kashif J. Piracha, MD
Photo of a person holding a sore wrist
The Carpal Tunnel: Anatomy, Function, and Rehab Considerations
Medically reviewed by Laura Campedelli, PT, DPT
Vas deferens
Anatomy of the Vas Deferens
Medically reviewed by Keri Peterson, MD
doctor looking at man's throat and pharynx
The Anatomy of the Pharynx
Medically reviewed by Jason DelCollo, DO
Doctor showing brain x-ray on digital tablet to patients
The Anatomy of the Pituitary Gland
Medically reviewed by Elizabeth Molina Ortiz, MD, MPH
Anatomy of the penis
The Anatomy and Function of the Penis
Medically reviewed by Rochelle Collins, DO
woman at doctor's office
The Anatomy of the Vulva
Medically reviewed by Rochelle Collins, DO
Small intestine
The Anatomy of the Small Intestine
Medically reviewed by Kashif J. Piracha, MD
Doctor and patient using digital tablet in hospital
Everything you need to know about your brain
By Elizabeth Hanes, BSN, RN
Skin
Everything You Need to Know About Your Largest Organ: Your Skin
Medically reviewed by Rochelle Collins, DO
Chest anatomy, artwork - stock illustration
The Anatomy of the Diaphragm
Medically reviewed by Lauren Schlanger, MD
The human brain
Your Brain Is the Most Complex Organ of Your Body
Medically reviewed by Keri Peterson, MD
Spleen
The Anatomy of the Spleen
Medically reviewed by Kashif J. Piracha, MD
Human larynx, illustration
The Anatomy of the Larynx
Medically reviewed by Rochelle Collins, DO
Eye Check up
Retina: Anatomy, Function, and Treatment
Medically reviewed by Keri Peterson, MD
The kidneys
Kidneys: Anatomy, Location, and Function
Medically reviewed by Anita C. Chandrasekaran, MD, MPH
A woman sticks out her tongue
The Surprising Complexity of Tongue Anatomy and Its Many Functions
Medically reviewed by Robert D. Sadaty, MD
Fetus (Baby) in Womb Anatomy
The Anatomy of the Placenta
Medically reviewed by Monique Rainford, MD
Human Pancreas Anatomy
The Anatomy of the Pancreas
Medically reviewed by Rochelle Collins, DO
Prostate gland. Male reproductive and urinary systems.
The Anatomy of the Prostate
By Mark Gurarie