Spasticity is a muscle control disorder that is characterized by tight or stiff muscles and an inability to control those muscles. In addition, reflexes may persist for too long and may be too strong (hyperactive reflexes). For example, an infant with a hyperactive grasp reflex may keep his or her hand in a tight fist.
Bifidobacteria are a group of bacteria that normally live in the intestines. They can be grown outside the body and then taken by mouth as medicine. Bifidobacteria are used for many conditions affecting the intestines, including preventing diarrhea in infants and children; as well as travelerâs diarrhea in adults.actic acid bacteria are found in fermented foods like yogurt and cheese. Bifidobacteria are used in treatment as so-called âprobiotics,â the opposite of antibiotics. They are considered friendly bacteria and are taken to grow and multiply in areas of the body where they normally would occur.
Humans are just one element of the biosphere, but we affect the Earth system in unique ways. Over 6 billion human beings live on our planet and each one affects the system at some level. Your own daily interactions with the other spheres may seem small, but when they are multipled by 6 billion, the effects can become noticeable. Some human activities, like the burning of fossil fuels, appear to be affecting the Earth system on a global scale. This three-dimensional graphic uses a color code to show human population density over most of the globe. Think about how human activities affect the Earth system in different parts of the world.