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./js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_default.gif
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举一反三
- AV Clip 6: AV 6.webm Watch the second part of the video clip and fill in each blank with the number mentioned in the video. Type 1 diabetes is a condition in which the (1) ______________produces little or no insulin. Insulin is a (2) _____________that helps your body use blood sugar (known as glucose) for energy. Your body takes the food you eat and breaks down fat, (3) _______________________________ for energy. While your body is (4) ______________ the food, the (5) ______________________are broken down into glucose. The glucose is then absorbed into the bloodstream where it is carried to cells throughout your body. (6) ______________ helps your cells absorb the glucose in your blood, allowing it to be used as energy. A healthy pancreas releases a regular supply of insulin into your bloodstream. After you eat, your blood glucose levels rise and your pancreas responds by releasing more insulin to move the glucose into your cells. Insulin acts as a key, opening up the cell so it can accept the glucose. In a person with type 1 diabetes, the pancreas produces little or no insulin. Without insulin, blood glucose levels rise. Without insulin glucose cannot enter the cells and be used for energy, as a result, it remains in the bloodstream. As a person with type 1 diabetes, it is important to (7) ____________________healthy blood glucose levels. High blood glucose levels over a long period of time can lead to health complications. If your blood glucose level drops too low even for a short amount of time, you may feel dizzy or too hot or cold. If your blood glucose level drops extremely low, you may lose consciousness. By taking insulin as (8) _____________________ by your doctor and maintaining a healthy diet, you can keep your blood glucose levels within a healthy range./js/editor20150812/dialogs/attachment_new/fileTypeImages/icon_default.gif
- According to the video, which of the following is wrong A: Insulin binds to specific receptors and acts like a key to open a pathway for glucose to enter the cell. B: Type 2 diabetes is caused by insufficient insulin or insulin resistance or both. C: When blood sugar rises, islet A cells sense it and release insulin to regulate blood sugar. D: When cells can't use glucose, they break down fats and proteins, producing ketones.
- The hormone that lower blood glucose level is A: glucocorticoid B: adrenaline C: glucagon D: insulin
- Which of the following hormone can decrease blood glucose level? ( ) A: glucagon B: adrenaline C: insulin D: norepinephrine E: thyroxine
- i) The secretion of insulin—which acts to lower the plasma glucose _____—is stimulated by a rise in glucose concentration, for example, and is inhibited by a fall in blood glucose.
内容
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Which of the following hormones can reduce blood glucose level? () A: Insulin B: Glucagon C: Growth hormone D: Adrenaline E: Glucocorticoid
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The hormone which can decrease the blood glucose is ( ). A: glucagon B: glucocorticoid C: adrenalin D: Insulin
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Which of following decreases levels of blood glucose? () A: glucagon B: epinephrine C: insulin D: cortisol E: growth<br/>hormone
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Which<br/>of the following are incorrectly paired? () A: Epinephrine:increased glycogenolysis in skeletal muscle B: Insulin:increased protein synthesis C: Glucagon:increased gluconeogenesis D: Progesterone:increased plasma glucose level E: Growth hormone:increased<br/>plasma glucose level
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Insulin is required by the __________ of the body in order for them to remove and use glucose from the blood.