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organs

Friday 16 July 2004

viscus

WKP

Definition: In biology, an organ or a viscus is a collection of tissues joined in a structural unit to serve a common function ( see biological function ). In anatomy, a viscus is an internal organ, and viscera is the plural form. Functionally related organs often cooperate to form organ systems and physiological functions.

72 to 76 organs have been scientifically validated in the human body: men have 72 organs, women have 76.

Organs have been built during evolution and have an histoy - history of organs.

Levels of organization

- The organ systems are composed by organs.
- Organs are composed by tissues.
- Tissues are composed by cells.
- Cells are composed by biomolecules.

A hollow organ is a visceral organ that forms a hollow tube or pouch, such as the stomach, intestine, or bladder.

Organs by alphabetic orders and Pathology of organs

- adrenal gland : adrenal pathology
- paraganglia
-  anus & perianal region : anal pathology
- appendix : appendiceal pathology
- bladder, ureter & renal pelvis : vesical pathology / ureteral pathology
- blood : hematopathology
- bone & joints : bone pathology / articular pathology
- bone marrow : medullary pathology
- breast : mammary pathology
- cervix
- CNS
- colon
- ear
- esophagus
- eye
- fallopian tubes & broad ligament
- gallbladder & extrahep bile ducts
- heart
- kidney
- larynx, hypopharynx & trachea
- liver & intrahepatic bile ducts
- lung
- lymph nodes & spleen
- jaws : mandible & maxilla
- mediastinum
- muscle & nerve
- nasal cavity & nasopharynx
- oral cavity & oropharynx
- ovary
- pancreas
- parathyroid gland
-  penis & scrotum
- placenta
- pleura & peritoneum
- prostate gland & seminal vesicles
- salivary glands
- skin
- small intestine & ampulla
- soft tissue
- stomach
- testis & epididymis
- thyroid gland
- uterus
- vulva , vagina & female urethra

See also

- organ systems
- regions of the body