举一反三
- 中国大学MOOC: White blood cells patrol the body searching for potential sources of infection and destroy invading pathogens, such as ________, ________, ________, and ________.
- Hematochezia() A: the presence of red blood cells in the urine B: abnormally dark tarry feces containing blood C: serious bleeding inside a person's body D: the passage of fresh blood through the anus
- When you change your mind about stress, you can change your body's response to stress.
- Blood viscosity increases when blood flows through the body surface.
- 中国大学MOOC: In order to control your blood pressure, you should _______.
内容
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中国大学MOOC: Your body draws __________ its reserves of fat during the times when you are fasting.
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Hematopoiesis refers to the formation of blood cells in the living body (especially in the bone marrow).____
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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
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中国大学MOOC: Your body _____ usually gives other people information about how you really feel.
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the human body is incredibly