Though skeptical, Rick Garloff, a 35-year-old American, still said even if the systems are not great lie detectors, they are wonderful lie deterrents. He once used the Truster on his 9-year-old son, to see if he had forgotten to close a door, accidentally letting the dog in. His ...
根据题干中关键词sensory nerve cells 可找到相关信息The sensory nerve cells carry messages of heat,light,sound,and pressure from the skin,muscles and organs inside the body即感觉神经细胞将热、光、声音、压力等信息进行传送,由此可判断B“察觉、感知光”的说法与原文相符,是正确答案。[解题关键] 根据关键...
Muscle cells can draw energy from proteins, fat, or glucose, a form of sugar created in the digestive process. Although most nutrients are distributed to muscles through the bloodstream, each muscle cell also stores a small amount of fat and glucose within itself as a ready source of energy,...
Cells(细胞)are the basic units of all living things,and until recently,scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells,such as those of brain cells,would not last forever. But the upper limits will be broken by new ...
This is the first stage of deep sleep, where our cells produce the most growth hormone to service bones and muscles, allowing the body to repair itself.这是深度睡眠的第一阶段，我们细胞会产生最大量的生长激素提供给骨头和肌肉，让身体进行自我修复。Stage four is where we begin to dream.第四阶段...
Once the first cell generates an electrical impulse, it triggers a chain reaction in the other pacemaker cells. These cells are usually found in the right atrium in an area known as the sinoatrial node. The electrical impulses generated by these cells cause the cardiac muscles to contract. ...
and so on. The unique job of stem cells is to make all these other types of cells. They are the suppliers of new cells. When stem cells divide they can make more of themselves or more of other types of cells. For example, stem cells in skin can make more of themselves or they can...
important in the heart, which needs to contact and relax with a normal rhythm. When calcium enters the muscle cells in the heart, it helps the heart muscles contract, while magnesium is then needed to help these musclefibers in the heartrelax so the heart can keep a proper and normal...
In response, the injured cells release inflammatory molecules called cytokines 作为回应,受损的细胞会释放出被称作细胞因子的炎性分子 that activate the immune system to repair the injury. 激活了免疫系统以修复损伤 This is when the muscle-building magic happens. 这就是肌肉变大的魔法 The greater the da...
special molecule(分子) which carries instructions that tell cells what proteins to make.Proteins are one of the building blocks of life.They're involved (6)almost every process in living things,from fighting diseases to building muscles. Dr.Karikó was excited about the idea ...