Some travel-related infections are spread through the bites of insects, such as mosquitoes (which carry malaria, mah-LAIR-e-uh, and yellow fever) or flies (for example, the tsetse, SET-see, fly can carry trypanosomiasis, trih-pan-o-so-MY-uh-sis). bite from an infected mosquito can transmit filariasis (fih-luh-RYE-uh-sis), a parasitic disease that affects the lymphatic system * . When the infected mosquito feeds, tiny worms pass from it to the person, where they travel to and grow in the lymph vessels.
The role of the liver in digestion. The liver is the largest solid organ inside the body and plays a very important role in the process of digestion by physically regulating it and ensuring release of post digestive nutrients into the system.
The main functions of liver as an accessory organ within the human digestive system are: 1  The secretion of bile and bile salts, and. 2  Phagocytosis of bacteria and dead or foreign materials.