write a descriptive paragraph in 100-150 words about the lake and the life it supports
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Answer:
1. Introduction
The brain has many different parts to it which help one function through daily life; parts such as the cerebrum which controls voluntary movement and regulates functions such as thinking, speaking and the ability to recall information. The cerebellum controls the balance and coordination and finally the brain stem, which consists of the medulla oblongata and the spinal cord which controls all involuntary functions such as breathing, heart rate and blood pressure. The brain stem is also able to carry out these actions even when someone is asleep. To fully understand how crucial the brain is to survival one must understand the functions of the brain stem.
Brain death occurs when brain cells, which cannot regenerate themselves, are injured or dead. This results in brain death as the brain becomes starved of oxygen. One can only be pronounced brain dead, by a neurologist and even then, a number of criteria must be met, some of these include; unresponsiveness to stimuli; no reflexes and an inability to breathe unaided by a machine(Goila and Pawar, 2009). At this point one is put on a ventilator. A ventilator is a machine which maintains the circulation of blood, oxygen and nutrients to organs around the body. To put a patient on life support is very costly to the family of the patient and even the hospital.