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Majors animal: Internal anatomy of the shark (matching)

Liver Produces bile and detoxifies many constituents of the absorbed digested compounds
Gallbladder Stores bile produced by the liver
Pancreas Produces digestive enzymes and delivers them to the duodenum, produces hormones that control blood-glucose levels
Esophagus Transports food to stomach
Stomach Site of food storage and initiation of digestion
Duodenum Receives secretions from the liver and pancreas for further breakdown of food from the stomach
Ileum (valvular intestine) Primary site of digestion where most of the absorption of nutrients into the bloodstream occurs
Cloaca Common chamber of the release of urine, feces, and semen
Gills Highly vascular structures for gas exchange with the bloodstream
Spleen Elongate organ that stores blood and recycles worn-out red blood cells
Heart Two-chambered organ (one atrium, one ventricle) that pumps deoxygenated blood to the gills for oxygenation and from there throughout the various organ systems of the body
Sinus venosus Thin-walled sac where deoxygenated blood from the body collects before being passed into the atrium of the heart
Conus arteriosus Contractile portion of the heart that receives blood from the ventricle and sends it to the gills for oxygenation via the central aorta
Kidneys Paired excretory organs that filter nitrogenous wastes from the blood
Mesonephric ducts Passageway leading from the kidney to the cloaca; transports urine and semen
Testes Paired reporductive organs that produce sperm
Epididymis Paired reproductive organs that store sperm
Ovaries Paired reproductive organs that produce ova
Ostium tubae Common opening to the oviducts through which ova are released from the ovaries pass
Oviducts Paired tubules where fertilization occurs
Shell glands Small, oval glands that secrete a thin membrane around fertilized ova
Uterus Large, paired horns of the reproductive system tract where embryonic development occurs
Created by: scandalouscanine