However, here is a comprehensive list of the major organs, categorized by system:
Circulatory System
* Heart
* Blood Vessels: Arteries, Veins, Capillaries
Digestive System
* Mouth (Teeth, Tongue, Salivary Glands)
* Pharynx
* Esophagus
* Stomach
* Small Intestine (Duodenum, Jejunum, Ileum)
* Large Intestine (Cecum, Colon, Rectum)
* Liver
* Gallbladder
* Pancreas
Endocrine System
* Pituitary Gland
* Thyroid Gland
* Parathyroid Glands
* Adrenal Glands
* Pancreas (Islets of Langerhans)
* Ovaries (Females)
* Testes (Males)
Excretory System
* Kidneys
* Urinary Bladder
* Ureters
* Urethra
* Skin
Immune System
* Spleen
* Thymus
* Lymph Nodes
* Bone Marrow
Integumentary System
* Skin
* Hair
* Nails
Musculoskeletal System
* Muscles (Skeletal, Smooth, Cardiac)
* Bones
* Cartilage
* Joints
* Ligaments
* Tendons
Nervous System
* Brain
* Spinal Cord
* Nerves
* Sensory Organs: Eyes, Ears, Nose, Tongue, Skin
Reproductive System
* Female: Ovaries, Fallopian Tubes, Uterus, Vagina
* Male: Testes, Epididymis, Vas Deferens, Prostate Gland, Seminal Vesicles, Penis
Respiratory System
* Nose
* Pharynx
* Larynx
* Trachea
* Bronchi
* Lungs
Other Important Organs
* Eyes
* Ears
* Tongue
* Teeth
This list is not exhaustive, but it provides a good overview of the major organ systems and the organs they contain. Please note that some structures, like the spleen, can be considered part of multiple systems.
If you are interested in learning more about specific organs, you can research them online or consult a medical textbook.