首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Body Systems A body system refers to a group of organs, which are parts of the body that do a special job, such as the heart,
Body Systems A body system refers to a group of organs, which are parts of the body that do a special job, such as the heart,
admin
2011-02-11
32
问题
Body Systems
A body system refers to a group of organs, which are parts of the body that do a special job, such as the heart, lungs and kidneys.
Ten major body systems in the human body:
1)the skeletal system, which includes the bones and the 【1】______ 【1】______
tissues.
2)the muscle system, which plays the role of moving the body, pushing
the food through the body and making the blood 【2】______ 【2】______
3)the nervous system which is made up of the brain, the spinal
【3】______and the nerves. 【3】______
4)the 【4】______system which comprises of the stomach and the 【4】______
intestines and 【5】______food to provide energy for the body. 【5】______
5)the respiratory system which consists of the windpipe and
【6】______and takes air into the body. 【6】______
6)the circulatory system which includes the blood, the heart, and all the
blood 【7】______ 【7】______
7)the 【8】______system made up of the kidneys and bladder. 【8】______
8)the lymphatic system.
9)the endocrine system composed of special 【9】______which give 【9】______
out hormones.
10)the 【10】______system consisting of organs involved in making 【10】______
new human beings.
【4】
Well now, let’s have a look at body systems, I’m going to run through them all very quickly and then we can have a look at them in detail. Now first, ah, have a look at the illustration showing some of the body’s organs. Now you should know most of these already. When we think of organs we usually think of the heart, lungs and kidneys. But, of course, the eyes, ears and brain are also organs and there are many more. Organs are part of the body that do a special job. Now, a group of organs working together is called a system. There are 10 main systems in the human body and they all work together to keep the body going.
Now let’s have a quick look at these systems.
Now first—the skeletal system. That’ s the bones and the things that hold them together, that we call connective tissues. The skeletal system is the framework of the body. It gives the body its shape and form and it protects the heart, lungs and the brain.
The muscle system has the role of moving the body. It also pushes food through the body and makes the blood circulate.
Now you can see how these systems work together. The bones couldn’t move without the muscles. And all the systems are controlled by the nervous system. This is made up of the brain, the spinal cord and the nerves. And this system controls all muscle movement. It also controls your senses and makes it possible for you to learn and remember things.
Now some people say that the nervous system is the most important system of all but that isn’t really true because all the systems have to work together to keep us alive. They are all essential to life. So you can’ t really say that one is more important than another.
Now, the digestive system. The stomach and the intestines are the main parts of this system. They have the job of processing food to provide energy for the body. Food is broken down to a simpler form so that it can be absorbed into the blood. The waste products are removed from the body through the rectum at the end of the intestines.
The respiratory system consists of the windpipe and lungs and it takes air into the body. It also separates out the oxygen needed to turn the food you eat into energy for the body. The lungs also get rid of the carbon dioxide, which is collected from the cells by the blood.
The blood, the heart and all the blood vessels form the circulatory system. Now this system carries the food and oxygen around the body. It also collects the waste from the cells and fights bacteria-germs--in the body.
The urinary system is made up of the kidneys and bladder. And this system filters certain wastes from the blood and removes them from the body as urine.
Now can you see how all these systems are working together--pouring things into the blood and filtering other things out of it—and keeping you alive?
Next is the lymphatic system. Now you probably haven’t heard of this one and it’s fairly hard to describe. Lymph is a clear liquid which comes from the blood. It leaves the blood vessels and moves throughout the body, picking up wastes as it goes—things that the body doesn’t want. When it has done its job the lymph flows back into a large blood vessel near the neck. The wastes that it has picked up are then filtered out of the body through the blood.
The endocrine system could be called the body’s chemical control. This system is made up of special glands found in many parts of the body. These glands give out hormones which are like chemical messengers. These tell different body systems how to operate. They control things like how tall people become and how energetic they feel.
Finally, the reproductive system. This consists of a group of organs involved in making new human ’beings. In males, the main organs of the reproductive system are the testes and in the females they are the ovaries and the uterus.
Now, er, let’s look at some of these systems in more detail ...
选项
答案
digestive
解析
转载请注明原文地址:https://jikaoti.com/ti/ZNpYFFFM
0
专业英语八级
相关试题推荐
Aperson,likeacommodity,needspackaging.Butgoingtoofarisabsolutelyundesirable.Alittle,exaggeration,however,does
AsoneofthedevelopedcountriesinAsia,JapanhasbeensoughthegemonyinAsiabecauseofitsstrongpowerineconomy.Howab
WhatisthemostimportantreligiousdenominationinBritain?
ChildrenintheUKarenotreadingenoughathome,favouringtelevisionandcomputergamesinstead,accordingtonewresearch.
LouisdeBernieres’Corelli’sMandolinisoneofthemostcharming,accomplishednovelsIhaveread.Sotheprospectofreviewin
ItispossibleforstudentstoobtainadvanceddegreesinEnglishwhileknowinglittleornothingabouttraditionalscholarlyme
ThecapitalcityofAustraliais______.
Accordingtoreportsinmajornewsoutlets,astudypublishedlastweekincludedastartlingdiscovery:thenation’sJewishpopu
ThebeginningofwhatwastobecometheUnitedStateswascharacterizedbyinconsistenciesinthevaluesandbehaviorofitspop
近年来,由于就业问题日益严重,有些人建议让没有工作的未婚妇女来替换那些家务繁重的女工。有些当丈夫的还说:“让我们的爱人回家去,把她们的工资拿来贴补我们。我们从家务琐事中解放出来,工作就能干得更好。”有些有工作的母亲力图一面搞好家务,一面做好工作。她们也附和
随机试题
商品储存指标有三种口径,其中属于业务部门的是()
检查胃幽门螺杆菌的试验是
上颌骨骨折复位后固定时间约为
肾脏不产生的激素是
单某对先执行2年的有期徒刑应向谁提出赔偿请求?后执行的“2年9个月零25天”应向谁提出赔偿请求?单某对剥夺其政治权利的附加刑可否提出赔偿请求?
背景资料某施工单位承包的机电安装单项工程办理了中间交接手续,进入联动试运行阶段。建设单位未按合同约定,要求施工单位组织并实施联动试运行,由设计单位编制试运行方案。施工单位按要求进行了准备,试运行前进行检查并确认:(1)已编制了试运行方案和操作规程;
一份房地产估价报告的组成部分应包括()。
若该药剂师把一份Q样品和一份取自5号瓶子的样品相混合,并对混合产物实施Y测,水明显变蓝了,则结果肯定是______。若取自2号瓶子和3号瓶子的样品混合后没有产生Y测试中出现的蓝色,则下面哪一项是正确的?
根据文意,下列对文中的“足够的力量”的理解,正确的一项是______。下列表述,不符合原文意思的一项是______。
下列选项中,不享有立法提案权的是
最新回复
(
0
)