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BIOL212
Majors animal: Internal anatomy of the shark (matching)
| Anatomy | Physiology |
|---|---|
| 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 |