首页
登录
职称英语
How does food affect mood and mind? The answer may lie in the chemistry of t
How does food affect mood and mind? The answer may lie in the chemistry of t
游客
2023-06-27
30
管理
问题
How does food affect mood and mind? The answer may lie in the chemistry of the brain and nervous system. Molecules called neurotransmitters (神经传递素) are chemical messengers. They carry a nerve impulse across the gap between nerve cells. The release of neurotransmitter molecules from one neuron and their attachment to receptor sites on another keep a nerve impulse moving.
Nerve impulses carry messages from the environment to the brain, for example, the pain you feel when you stub (踢碰) your toe. They also carry messages in the other direction, from the brain to the muscles. That’s why you back away from the obstacle that initiated the pain signal and exclaim, "Ouch! "
"Many neurotransmitters are built from the foods we eat," says neuroscientist Eric Chudler of the University of Washington. Too little or too much of a particular nutrient in the diet can affect their production, Chudler says. For example, tryptophan from foods such as yogurt, milk, bananas, and eggs is required for the production of the neurotransmitter serotonin. Phenylalanine from beets, almonds, eggs, meat, and grains goes into making the neurotransmitter dopamine.
Dozens of neurotransmitters are known; hundreds may exist. Their effects depend on their amounts and where they work in the brain. The neurotransmitter serotonin, for example, is thought to produce feelings of calmness, relaxation, and contentment. Drugs that prevent it from being taken again (into the neuron that released it) are prescribed to treat depression. In at least some healthy, nondepressed people, carbohydrate foods seem to enhance serotonin production and produce similar effects. "It is the balance between different neurotransmitters that helps regulate mood," Chudler says.
Proper nutrition may also enhance brainpower. Choline is a substance similar to the B vitamins. It’s found in egg yolks, whole wheat, peanuts, milk, green peas, liver, beans, seafood, and soybeans. The brain uses it to make the neurotransmitter acetylcholine. To test the effects of choline on memory and learning, researchers at the Massachusetts Institute of Technology gave memory tests to college students before increasing the amount of choline in their subjects’ diets. Later, they retested. On the average, memories were better, and the students learned a list of unrelated words more easily. [br] What is the message the author intends to convey?
选项
A、The chemistry of the brain and nervous system.
B、The influence of foods on our mood and mind.
C、The functions of neurotransmitters.
D、The importance of a balanced diet.
答案
B
解析
本文首句提出的问题是全文要解答的问题,也就是说,全文围绕这个问题展开讨论,由此可见,本文是为了说明食物对情绪和思维的影响,因此,本题应选B。A可以说是第1段至第4段的主要内容,C是第1段的内容,均没有全面概括全文内容。D中的balanced diet在文中不断提及,但本文的重点不是为了说明均衡饮食的重要性,而是饮食和情绪、思维的关系。
转载请注明原文地址:https://tihaiku.com/zcyy/2788601.html
相关试题推荐
Howdoesfoodaffectmoodandmind?Theanswermaylieinthechemistryoft
Howdoesfoodaffectmoodandmind?Theanswermaylieinthechemistryoft
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyar
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyar
Howdoesfoodaffectmoodandmind?Theanswermaylieinthechemistryoft
Howdoesfoodaffectmoodandmind?Theanswermaylieinthechemistryoft
Howdoesfoodaffectmoodandmind?Theanswermaylieinthechemistryoft
Howdoesfoodaffectmoodandmind?Theanswermaylieinthechemistryoft
Howdoesfoodaffectmoodandmind?Theanswermaylieinthechemistryoft
Howdoesfoodaffectmoodandmind?Theanswermaylieinthechemistryoft
随机试题
Thisapartmentcould______afamilyofteninaminimalspacebyusingsofasand
计算简答题:根据所给材料回答问题。(凡要求作选择回答的问题,应将与所选选项对应的
甲公司是一家生产家具的工厂,每日正常使用10吨木料,预计最多每日使用15吨木料,
关于《核心原则》要求达到的目的,下列说法正确的有()。A.评价管理层的能力
内呼吸一般是指A.组织细胞间的气体交换 B.组织细胞与毛细血管血液之间的气体交
下列情形中不属于督察机构权限范围的是:A.民警李某在值班期间与朋友外出聚会并饮酒
关于中行社会责任和慈善活动,中国银行荣获什么奖项:()A.“最具社会责任金
以下不属于股票基金与股票的差异的是()。A.股票价格始终处于变动之中,而股票基金
关于数值型数据的说法,正确的有()。A.数值型数据通常用文字表述 B.数值型
施工图预算对建筑施工企业的作用包括()。A.建筑企业投标报价的基础 B
最新回复
(
0
)