跟讀練習: Physiology Chapter 1 | Introduction to Physiology & Homeostasis Explained - 通過影片學習英語口語

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Welcome to another lecture by Medicomedics, Learning Made Easy.

Physiology, Chapter 1, Introduction to Physiology and Homeostasis.

So in this first lecture, we will give you a brief introduction into the subject of physiology, discuss the levels of organization in the body,

present the concept of homeostasis, discuss different components and examples of it, and what happens when the systems are disrupted.

And we will discuss the continuous nature of physiology and end with a summary.

Now, what is physiology?

So physiology is the study of how living organisms function.

It focuses on understanding mechanisms, so how the body works at every level.

An example can be physiology of the heart explains how the heart pumps blood efficiently to sustain life.

So physiology is like a blueprint that explains how everything in the body works together.

Levels of organization in the body.

so let's start at the chemical level where we have atoms

or atoms and molecules like water and proteins this is illustrated right here building on

that we have at the cellular level where we find the basic units of life like nerve cells cardiac cells

and any other cell After that, we reach the tissue level,

so groups of cells working together, like muscle tissue.

Continuing from that, we get to the organ level, where tissues form functional units, for example, the lungs.

Continuing, we get to the system level, where organs performing collective functions.

So, for example, we have the respiratory system.

And continuing on, we get to the organism level, so the body as a whole.

So homeostasis is the body's ability to maintain a stable internal environment despite external changes.

Some examples of regulated variables include body temperature, blood pH, glucose levels in the blood,

and this ensures survival and optimal functioning.

So homeostasis is like being on cruise control.

It keeps your body steady no matter what is going on around you.

Now, what are some components of homeostasis?

Well, the key components include sensors that detect changes in the environment.

For example, thermoreceptors for changes in temperature.

We have the control center processing information and determining responses, like our brain.

Effectors, which act to restore balance, for example, our muscles or glands.

Furthermore, we have something called the negative feedback loop and the positive feedback loop.

Now, negative feedback loops reverse changes to maintain stability.

So, just as a simple example, we have, for whatever reason, an increase in our blood pressure.

There are systems in place where we get alerted or our body gets alerted to the fact that blood pressure has arisen.

So it sets into motion changes to reverse this to reach a stable level.

Obviously, when these natural feedback loops don't function as they're supposed to,

this is when we can start talking about the development of pathologies.

So we might need to assist the patient with medication, for example.

We also have positive feedback loops.

And these amplify changes for specific outcomes.

For example, during childbirth, we want contractions to occur.

Now let's look at an example of homeostasis.

Let's take body temperature.

So the scenario is the body temperature is rising during exercise, right?

Exercise is not a pathology, but our body temperature is increasing during exercise.

What's the response then?

Well, we have sensors detecting this rise in temperature.

Our body temperature is rising during exercise.

What's the response then?

Well we have sensors detecting this rise in temperature.

Our brain activates our sweat glands.

Sweating then cools the body through evaporation.

And the outcome?

Our body temperature returns to normal.

This is a great example of how it's supposed to maintain homeostasis.

Just to give you a little clinical insight here,

we went through that this is during exercise, so this is a normal procedure in day-to-day life, let's say.

But what if body temperature has risen and keeps rising due to an infection?

You have probably at least once in your life experienced having fever.

And if we have an infection, fever might occur.

Now, if that fever keeps increasing to certain levels where the environment

that becomes created due to this elevation of temperature becomes incredibly destabilizing for us

and could lead to failure of organs and eventually even death.

So what do we do then?

Well, we use, for example, antipyretics, so medication to decrease this fever.

One you may know of is, for example, paracetamol or paracetamol.

So in that case, we have an infection, right?

Maybe it's spreading, maybe it's a serious infection.

Our body is not able to maintain its homeostasis.

So this is when your job as a doctor comes in and you identify that the body is not maintaining homeostasis.

This fever is elevating the body temperature way too high.

It's becoming deadly.

So let me give a medication to help decrease this fever

while also treating this infection with antibiotics or whatever it may be.

now what happens then when this this balance of homeostasis actually fails

so disruptions of homeostasis leads to disease

or dysfunction for example diabetes that's a failure to regulate blood

glucose levels a heat stroke is the inability to regulate the temperature.

So restoring homeostasis is the aim of medical interventions.

To understand diseases, we must first master physiology's role in maintaining balance.

Because remember, just like when we went through anatomy or studied anatomy,

you learned, first of all the anatomical position or the anatomic position

and then you reference everything else to that

so you have a reference point

so you don't get lost it's the same here we start with homeostasis what is the normal

and when you go to the doctor you take some blood tests there is always some ranges you are given

and if it's above that range there is a mark usually or if it's below that,

these ranges somehow indicate homeostasis in a way.

And when whatever value deviates from that, there is a disruption, probably due to some disease or dysfunction at some level.

Now, physiology and clinical practice.

So what are some clinical applications of physiology?

For example, blood pressure monitoring ensures cardiovascular homeostasis.

Blood sugar tests evaluate for glucose regulation.

Ventilation adjustments in critical care help maintain oxygen balance.

Now, physiology is dynamic, so the body continuously adapts to internal and external changes.

Systems are interdependent, so changes in one system very often affect other systems.

For example, stress activates the nervous system, the endocrine system, and the cardiovascular system.

So in summary then, physiology explains how the body functions and stays balanced.

Homeostasis is critical for health.

100

Disruptions lead to disease.

101

Understanding physiology is essential for diagnosing and treating illnesses.

102

And that's the end of our first chapter.

103

Continue now to chapter 2.

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本課的詞彙與口語要點

這節 C1 級別的口語課以影片“Physiology Chapter 1”為素材。影片中反覆出現的詞有：example, homeostasis, physiology, temperature, blood。這段影片共有 103 個句子、1125 個單詞可供跟讀。講話部分時長為 10:06。說話人語速平穩，每分鐘約 111 個詞，很適合跟讀。只有 79% 的單詞屬於英語最常用的 3,000 詞，詞彙難度較高。

影片中的重點詞彙

影片中最難的 15 個單詞，附發音和釋義：

單詞	發音	釋義
homeostasis 名詞	/ˌhoʊ.mi.oʊˈsteɪ.sɪs/	穩態 /穩態, 恆定狀態 /恆定狀態
physiology 名詞	/ˌfɪziˈɑ.lə.d͡ʒi/	生理, 生理學 /生理學
regulate 動詞	/ˈɹɛɡ.jə.leɪt/	調節 /調節
sensor 名詞	/ˈsɛn.sɚ/	感測器 /感測器
detect 動詞	/dɪˈtɛkt/	察覺 /察覺, 發覺 /發覺
gland 名詞	/ɡlænd/	腺體 /腺體, 腺
dysfunction 名詞	/dɪsˈfʌŋk.ʃən/	功能障礙 /功能障礙
pathology 名詞	/pəˈθɒləd͡ʒi/	病理學 /病理學
organism 名詞	/ˈɔɹ.ɡəˌnɪz.əm/	生物, 有機體 /有機體
cardiovascular 形容詞	/ˌkɑːdi.əʊˈvæskjʊlə(ɹ)/	心血管
atom 名詞	/ˈætəm/	原子
activate 動詞	/ˈæktɪˌveɪt/	啟用
anatomy 名詞	/əˈnætəmi/	解剖學 /解剖學, 解剖
blueprint 名詞	/ˈbluːˌpɹɪnt/	藍圖 /藍圖
childbirth 名詞	/ˈt͡ʃaɪldˌbɝθ/	分娩, 生產 /生產

影片中出現的短語動詞

單詞	釋義
go through 動詞	通過 /通過

影片中的語法

說話人最常用的結構，並附上影片中的原話：

結構	影片中的用法
被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的	are disrupted · is illustrated · are given
現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事	has arisen · has risen

需要注意的發音

說話人用了 3 次縮略和弱讀形式，例如 don't, they're。請按聽到的簡短形式來說。

“th” 音: pathology /pəˈθɒləd͡ʒi/, childbirth /ˈt͡ʃaɪldˌbɝθ/
“sh” 和 “zh” 音: disruption /dɪsˈɹʌpʃən/, dysfunction /dɪsˈfʌŋk.ʃən/, contraction /kənˈtɹækʃ(ə)n/, evaporation /ɪˌvæpəˈɹeɪʃən/, ventilation /ˌvɛntɪˈleɪʃ(ə)n/
長單詞——注意重音位置: homeostasis /ˌhoʊ.mi.oʊˈsteɪ.sɪs/, physiology /ˌfɪziˈɑ.lə.d͡ʒi/, paracetamol /ˌpɛɹ.əˈsiː.təˌmɔl/, pathology /pəˈθɒləd͡ʒi/, organism /ˈɔɹ.ɡəˌnɪz.əm/

中文母語者容易讀錯的音：

/v/ — 不要讀成 /w/，上齒輕觸下唇: cardiovascular /ˌkɑːdi.əʊˈvæskjʊlə(ɹ)/, activate /ˈæktɪˌveɪt/, deviate /ˈdiː.vi.eɪt/, elevate /ˈɛləveɪt/, evaporation /ɪˌvæpəˈɹeɪʃən/
詞尾子音 — 要讀清楚，後面不要加母音: homeostasis /ˌhoʊ.mi.oʊˈsteɪ.sɪs/, glucose /ˈɡluː.kəʊz/, regulate /ˈɹɛɡ.jə.leɪt/, detect /dɪˈtɛkt/, gland /ɡlænd/
/r/ 和 /l/ 的區別: regulate /ˈɹɛɡ.jə.leɪt/, paracetamol /ˌpɛɹ.əˈsiː.təˌmɔl/, cardiovascular /ˌkɑːdi.əʊˈvæskjʊlə(ɹ)/, blueprint /ˈbluːˌpɹɪnt/, illustrate /ˈɪl.əˌstɹeɪt/

如何用這段影片練習

先完整聽一遍影片，不要開口，記下不認識的單詞。
用正常速度逐句跟讀，每句重複到你的節奏與說話人一致為止。
錄下自己的聲音並與原聲對比，特別注意 homeostasis, physiology, regulate 這類單詞。

什麼是跟讀法？

跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。

影子跟讀法: 閱讀完整分步指南 →

跟讀練習: Physiology Chapter 1 | Introduction to Physiology & Homeostasis Explained - 通過影片學習英語口語

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