Shadowing Practice: Innate Immune System: Simple Overview (Classification, General Factors) - Immunology - Learn English Speaking with Video
Ders oluşturuluyor...
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Hello and welcome to another video.
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This video is mainly going to be about the innate immune system.
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Now, your immune system uses two main strategies to defeat any type of unwanted invaders.
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One of the strategies is called the innate immune system and the other one is called the acquired immune system.
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The innate immune system is mainly present since birth and is therefore sometimes also called the natural immune system.
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While the acquired, however, forms during a person's lifetime and is therefore sometimes also called the adaptive.
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Now just remember that the baby also has some type of acquired immune system.
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I just put the baby there to show you that you've always had the innate immune system ever since you were born.
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So now let's put this to practice.
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Imagine we have three different types of bacteria, right?
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The innate immune system is what we call non-specific because it actually works against any type of agents equally.
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The adaptive however works very specific as you see right here.
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And not only that, upon defeating the bacteria, you gain some kind of immunological memory,
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which usually becomes enhanced upon repeated exposure to the same agents.
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The innate immunity doesn't really have that.
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And so let's see how that works.
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We mainly classify the innate immune system into three different types.
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The first is what we call general factors.
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And we've got the cellular factors and also factors and humoral factors.
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The general factors include physiological barriers at the portal of entry like the skin and mucous membranes.
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And they're usually, analogically enough, the first line of defense.
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Next we have the pyrogenic reactions.
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Now don't get scared if you haven't heard this term before.
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I'll get more into this later when I talk about the macrophages mainly.
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pyrogenic reactions often referred to as fever.
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Some viruses and bacterias cannot really replicate optimally because the body changes its temperature.
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So that's why we called it the general factors because it works generally by increasing the temperature.
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Another general factors are secretion.
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You know, secretion of different enzymes, fatty acids.
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The cellular Some of the factors are your own microbiota fighting for space in food.
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Phagocytosis by cells like neutrophils and macrophages.
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They do that by the different receptors they have on the surface.
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We also got natural killer cells.
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They're really important for the antiviral immune response.
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These cells can bind to the surface of antigens by using toll-like receptors, which usually lead to inflammatory response.
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Humeral factors which include the complement system and the interference.
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Now I know this seems a lot but trust me it all gets logical once you understand the concepts.
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In my opinion
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if you want to learn immunology properly you need to understand
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the different parts individually before you can understand the whole concept together in a system.
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And that's what I'm aiming to show you, everything individually first and then put them all together and show you how this works in a system system.
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Alright, so in this video I'm mainly going to focus on the general factors
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because those are really important factors to start with when you want to understand immunology.
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Now imagine these are your epithelial cells.
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Let's say this is your skin for example.
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The first one includes physical barrier where bacteria cannot really enter because of the tight junctions these cells really have.
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Another mechanism is when the bacteria can't enter because of secreted products,
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could be free fatty acids released by your gastrointestinal tract or enzymes released at the mucous membrane.
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So let's do it like that.
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In the saliva, sweat glands and tears we have something called lysozyme
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which once secreted out they break down the peptidoglycan layer of the bacterial cell wall.
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Next you know the gastrointestinal tract?
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You got some cells in the walls of your stomach called parietal and chief cells.
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Chief cells can release pepsin which breaks down the proteins of certain bacteria.
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And parietal cells mainly release hydrochloric acid for lowering the pH.
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We can also have defensins in the gastrointestinal tract.
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The list goes on and on.
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The point is that we secrete out quite a lot of substances as a part of our general innate immunity.
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Some bacteria can actually get through all of this mess without even getting hurt, and those are the bacteria that usually make us sick.
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Alright, so what else do we have?
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You know the normal microbiota you have in your body?
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They actually protect you by making a hard environment for the foreign bacteria to grow in, by taking up space in food for example.
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So that's mainly the general factors I wanted to talk about.
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Now from the cellular factors, we've already talked about the microbiota, limiting the pathogenic bacteria from growing.
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In my next video we will look at what toleric receptors are and how phagocytosis happens in details and steps in inflammation.
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Natural killer cells has a cytotoxic mechanism
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and I feel like it's more logical to talk about it later
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when I talk about the cellular immune response as it kind of fits more there.
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Alright, so let's look at these.
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Bu dersin kelimeleri ve konuşma notları
Bu C1 seviyesindeki konuşma dersi “Innate Immune System: Simple Overview (Classification, General Factors) - Immunology” videosuna dayanıyor. En çok tekrarlanan kelimeler: factors, immune, cell, bacteria, innate. Bu videoda gölgeleme çalışması için 69 cümle ve 865 kelime var. Konuşma bölümü 5:09 sürüyor. Konuşmacı dakikada yaklaşık 168 kelimeyle, günlük konuşmaya yakın doğal bir hızda konuşuyor. Kelimelerin yalnızca %80’i İngilizcede en sık kullanılan 3.000 kelime arasında, bu yüzden kelime dağarcığı zorlayıcı.
Bu videodaki önemli kelimeler
Videodaki en ileri düzey 15 kelime, telaffuzu ve anlamıyla:
| Kelime | Telaffuz | Anlam |
|---|---|---|
| bacterium isim | /bækˈtɪəɹ.ɪəm/ | bakteri |
| innate sıfat | /ɪˈneɪt/ | doğuştan, yaratılıştan |
| cellular sıfat | /ˈsɛl.ju.lə/ | hücresel, hücreli |
| receptor isim | /ɹɪˈsɛp.tə/ | reseptör, almaç |
| immunology isim | immünoloji | |
| secretion isim | /sɪˈkriːʃ(ə)n/ | salgı, ifraz |
| enzyme isim | /ˈɛn.zaɪm/ | enzim |
| immunity isim | /ɪˈmjuːnəti/ | bağışıklık |
| antigen isim | antijen | |
| immunological sıfat | immünolojik | |
| invader isim | /ɪnˈveɪ.də(ɹ)/ | işgalci |
| saliva isim | /səˈlaɪvə/ | salya, tükürük |
| replicate fiil | /ˈɹɛplɪkeɪt/ | replike etmek |
| inflammation isim | /ɪnfləˈmeɪ̯ʃən/ | enflamasyon, iltihap |
| unwanted sıfat | /ʌnˈwɒntɪd/ | istenmeyen |
Tekrar etmeye değer cümleler
Videodan, günlük konuşmada yeniden kullanabileceğiniz kısa ve tam cümleler:
- Let's say this is your skin for example.
- Next you know the gastrointestinal tract?
- Alright, so what else do we have?
- You know the normal microbiota you have in your body?
- Alright, so let's look at these.
Bu videodaki dil bilgisi
Konuşmacının en çok kullandığı yapılar, videodaki sözcüklerin aynısıyla:
| Yapı | Videoda |
|---|---|
| Present perfect have/has + fiilin üçüncü hâli — geçmişte olan ama şimdi de önemli olan bir eylem | haven't heard · we've already talked |
| Edilgen yapı be + fiilin üçüncü hâli — kimin yaptığı değil, ne olduğu önemli | is called · were born |
Dikkat edilecek telaffuzlar
Konuşmacı I'm, they're, we've gibi kısaltılmış biçimleri 12 kez kullanıyor. Bunları duyduğunuz gibi kısa söyleyin.
- “sh” ve “zh” sesleri: secretion /sɪˈkriːʃ(ə)n/, inflammation /ɪnfləˈmeɪ̯ʃən/, junction /ˈd͡ʒʌŋkʃən/
- Uzun kelimeler — vurguyu doğru yere koyun: gastrointestinal /ˌɡæstɹoʊɪnˈtɛstɪnəl/, parietal /pəˈɹaɪ.ə.təl/, phagocytosis /ˌfeɪ.ɡoʊ.saɪˈtoʊ.sɪs/, individually /ˌɪndɪˈvɪd͡ʒ(u)əli/, immunity /ɪˈmjuːnəti/
Türkçe konuşanların zorlandığı sesler:
- Kelime başındaki ünsüz kümesi — araya ünlü eklemeyin: tract /tɹækt/, mucous /ˈmjuːkəs/, classify /ˈklæs.əˌfaɪ/, neutrophil /ˈnjuːtɹəfɪl/, scare /skɛɚ/
- /æ/ — “e”den daha açık: bacterium /bækˈtɪəɹ.ɪəm/, gastrointestinal /ˌɡæstɹoʊɪnˈtɛstɪnəl/, tract /tɹækt/, macrophage /ˈmækɹɔʊː.feɪd͡ʒ/, adaptive /əˈdæp.tɪv/
Bu videoyla nasıl çalışılır
- Videonun tamamını konuşmadan bir kez dinleyin ve bilmediğiniz kelimeleri not edin.
- 0,75× hızla başlayın, cümle cümle tekrar edin ve kolaylaşınca normal hıza dönün.
- Kendinizi kaydedin ve orijinaliyle karşılaştırın; bacterium, innate, cellular gibi kelimelere özellikle dikkat edin.
Gölgeleme Tekniği Nedir?
Gölgeleme, başlangıçta profesyonel tercüman eğitimi için geliştirilen ve çok dilli Dr. Alexander Arguelles tarafından popüler hale getirilen, bilim destekli bir dil öğrenme tekniğidir. Yöntem basit ama güçlüdür: ana dili İngilizce olan bir sesi dinler ve hemen yüksek sesle tekrar edersiniz — konuşmacıyı 1-2 saniye gecikmeyle takip eden bir gölge gibi. Pasif dinleme veya dilbilgisi alıştırmalarının aksine, gölgeleme beyninizi ve ağız kaslarınızı gerçek konuşma kalıplarını eşzamanlı olarak işlemeye ve yeniden üretmeye zorlar. Araştırmalar, telaffuz doğruluğu, tonlama, ritim, bağlı konuşma, dinleme anlama ve konuşma akıcılığını önemli ölçüde geliştirdiğini göstermektedir — bu da onu IELTS Konuşma hazırlığı ve gerçek dünya İngilizce iletişimi için en etkili yöntemlerden biri yapar.