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
2013-03-19
58
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.
【6】
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, tile 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 sepa-ates 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 ail 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 hacteria-germsin 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% 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 gees--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
lungs
解析
转载请注明原文地址:https://www.kaotiyun.com/show/oE4O777K
0
专业英语八级
相关试题推荐
"Ineveryknownhumansocietythemale’sneedsforachievementcanberecognized...Inagreatnumberifhumansocietiesmen’ss
Duringthefirst70yearsofthe20thcentury,inequalitydeclinedandAmericansprosperedtogether.Overthelast30years,by
TheImportanceofQuestionsFornon-nativespeakersofEnglishwhowanttoparticipateingroupdiscussions,itisimportant
Whichofthefollowingistrue?
SegregationinEducationUntilthe1950s,theequal【1】providedbythe14thAmericansofdifferentorigins.【1】______In1896,
AnyonebelievingtheglobaleconomiccrisistobeovershouldhavetakenalookaroundEuropethisweek.Desperatetorevivehis
SinceearlyNovember,casesofH1N1havecontinuedtodeclinenationwide,andscientistskeepingtrackofthenumberssaythata
Theaudiencewaitedinrespectivesilencewhiletheiragedspeakersearchedamonghisnoteforthefigureshecouldnotremember
ThemasterpieceWaldenwascreatedby
克隆人、千年虫、互联网……我们触目所见的许多东西都在挑战我们的思维和传统。虽然我们应当有勇气来接受和不断地超越人类的局限,可是并非一切发展都无懈可击。无限制的发展和无限制的挥霍一样的可怕,所以西方科学家生活在隐忧中,对未来的科学又喜又惊,反思科学发展成了他
随机试题
我国司法机关活动和工作遵循和执行的方针、原则。
简述检察文书“附”项的内容。
诸多疾病分类方案中,最有影响力,在我国最为普及的是
在牙板最末端20个定点上,上皮细胞迅速增生,形成圆形或卵圆形的上皮芽,形状如花蕾,称为在钟状期,外釉上皮和内釉上皮相连处称
[2012年,第112题]某企业生产一种产品,年固定成本为1000万元,单位产品的可变成本为300元,售价为500元,则其盈亏平衡点的销售收入为()。
简述问题解决的基本过程。
下列企业中,会计人员可以不实行回避制度的是()。
迁移的实质是()。(2016·辽宁)
【2015年陕西汉中.多选】李红是某高校学前教育专业的学生,其在中学阶段就对幼儿教育兴趣浓厚.进入大学后李红更加坚定了毕业后从事幼儿教育的信念,李红的学习动机属于()。
国家规定各单位给高温作业人员发放高温补贴,现在要你去调查该项规定的落实情况,你会怎么做?你认为困难是什么?对于这些困难又该如何解决?
最新回复
(
0
)