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Anatomy, the brain.
Listen to part of a lecture of in an anatomy class.
I’ve brought in a picture of the human brain today, which we are going to look at and discuss in detail. The parts of the brain we are going to talk about today are clearly labelled. The brain is like our command center for all of our daily functions and allows us to cope with our environment. How we communicate with words, actions, thoughts and feelings are all centered in the brain. Some researchers believe that the brain is so complex and mysterious that we will never be able to fully understand it. Some have even refered to it as a little black box like those found on a plan that contains all the critical and highly confidential information of the flight. That is being said there are parts of the brain we do know about , like the parts listed on the diagram, and we also know there functions that each bring to make our body work. It is easier to think of the brain as three connection parts: the cerebrum, brainstem and cerebellum. Let’s start off the brainstem which is found at bottom of the brain and joins the cerebrum to the spinal cord. the brainstem has an important role because it controls lots of critical functions , including respiration, regulation of the heart rhythms, basic aspects of sound localization and which allows us to identify the origin of a detected sounds and reflexes. As you can see on the diagram the brainstem includes midbrain, the pons and the medulla. These allow functions such as the movement of eyes and mouth, passing on sensory messages like hot, pain, loud, and other functions, such as hunger, consciousness, body temperatures, sneezing coughing, vomiting and swallowing.
Next we will look at the second largest part of the brain, the cerebrum. it is located at the lower back of the head and is attached to the brainstem. It is made up with two hemispheres, Its functions are to control complex voluntary motor functions such as walking, balance and posture.
The third and largest part of our brain is cerebrum. Its associations are conscious thought, movement and sensations such as touch, vision, hearing , judgments, reasoning , problem solving and emotions. It is made up with two halves, which each half controlling the opposite side of the body. The corpus callosum connects the two haves and delivers messages between them. There are four lobes that make up the cerebrum: the frontal, temporal, parietal and the occipital the frontal lobe is located in front of the head and it involved personality, characteristics and movement. The parietal lobe is the middle part of brain and helps you to identify objects and understand spatial relationships like where your body is compared to objects around you. It also helps make meaning of pain and touch in the body. The occipital lobe allows you to see and is located at the back of the brain. Finally, the temporal lobe assists with memory , speech and sense of smell and is found at the sides of the brain.
The average weight of the adult human brain is anywhere between 1and1.5 kilograms. Some people say that we only use 10% of our brain, but it just a myth. In fact, we use our entire brain. That being said we can claim most people only use a very small fraction of the cognitive potential of their brains. Different cultures have used several methods to improve their cognitive potential such as reading, education, puzzle solving and critical thinking. I hope this brief introduction to brain helps you understand the brain and its different functions.
New words:
Labeled:贴上标签的
cerebrum:大脑
cerebellum 小脑
Reflexes 条件反射
pons 脑桥 medulla 髓质
Frontal 额骨
parietal 顶骨
occipital 枕骨
这就是我今天的作业,听得好差啊,满篇都是错误,希望明天可以好一点、
今天是第一次听写,有些不适应,手忙脚乱的 |
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