The digestive tract is the tube that extends from the mouth to the anus, and it consists of the (1) mouth, (2) pharynx, (3) esophagus, (4) stomach, (5) small intestine, and (6) large intestine. The accessory organs include the (1) teeth, (2) tongue, (3) salivary glands, (4) liver, (5) gallbladder, and (6) pancreas.ccessory organs The accessory organs include the â (1) teeth, â (2) tongue, â (3) salivary glands, â (4) liver, â (5) gallbladder, and â (6) pancreas. Figure 26.1Illustration showing the design and structures of the digestive system.
Nutrients such as omega-3 fatty acids, lutein, zinc, and vitamins C and E might help ward off age-related vision problems such as macular degeneration and cataracts, studies show. Regularly eating these foods can help lead to good eye health 1  : Green, leafy vegetables such as spinach, kale, and collards. 2  Salmon, tuna, and other oily fish. 3  Eggs, nuts, beans, and other non-meat protein sources. 4  Oranges and other citrus fruits or juices.
Healthy Foods to Protect Eye Health. Eating right can keep our eyes healthy and lower the risk of eye disease. There are some foods that are particularly important for maintaining eye health. These are the foods that are rich in lutein, zeaxanthin, vitamin C, vitamin E, vitamin A, zinc, omega-3 fatty acids and fiber. Kale: Like other leafy dark green vegetables, Kale is rich in lutein and zeaxanthin. These nutrients are concentrated in the retina and lens, playing an important role lowering risk of AMD and cataracts, and providing protection against retinal damage.