Task: Audio-visual Exercises AV Clip 4: AV 4.mp4 Watch the second part of the video clip and fill in each blank with the number mentioned in the video. When food is ingested, it travels along the (1) _____________ where it is broken down into its (2) ___________________ in order to be absorbed into the bloodstream. One such nutrient is (3) _______________ , a simple sugar. Glucose gets absorbed by the stomach and (4) ________________ and then enters the bloodstream. It travels through the (5) _____________ to all body cells. Once absorbed into the bloodstream, glucose circulates, causing the blood sugar level to rise. An increased level of blood sugar sends a signal to the (6) _________________ which respond by secreting the hormone insulin into the circulation. Insulin is necessary for glucose to reach and be used by several important (7) _______________ tissues throughout the body. These include the liver muscle and (8) _____________ . Insulin is necessary to keep blood glucose levels stable in the body. Glucose enters the cell through a process called facilitated diffusion.