Shadowing-Übung: Circulatory System and Pathway of Blood Through the Heart - Englisch Sprechen Lernen mit Video

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Did you have breakfast this morning?
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Did you ever wonder after you eat breakfast and your food is digested, how is that glucose getting transported around your body?
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Or as you take a breath in, how does that oxygen get transported around?
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Or when you exhale, how does that carbon dioxide get transferred out?
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Are these only questions I ponder during breakfast?
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Maybe.
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Your circulatory system is absolutely fascinating and highly involved in this.
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In this short intro video of the circulatory system, we will mention some basics about its functions and trace the pathway of how blood travels through your heart,
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but please know before we get started, there are gigantic textbooks on the circulatory system itself.
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So obviously this video is just an intro.
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We're going to first talk about blood, the medium of how we transport glucose and gases.
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As we mentioned in our Body Systems intro video from many years ago, there are some misconceptions.
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Human blood is red, and always red, although the shade of red can vary based on how much oxygen is in the blood.
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Veins and arteries are often drawn in diagrams as blue
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or red to show whether they have lower or higher concentrations of oxygen.
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But that's just how it is used in most diagrams.
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It doesn't mean the blood, or the veins, or the arteries are actually that color.
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Veins that you see under your skin may look blue or green, but that involves the way they appear under the skin, and the reason for this would make a great physics topic.
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But I digress.
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Human blood has a lot of functions.
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It maintains a certain pH, temperature, osmotic pressure.
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All of this is very important for homeostasis.
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It transports things like hormones, nutrients, and gases.
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And it's made up of different components.
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One component includes plasma, the liquid portion.
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Water, proteins, salts, lipids.
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You'll find them in this liquid portion of blood, known as plasma.
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Another component includes cellular components.
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This means red blood cells which do the transporting of gases, white blood cells which can fight infections,
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and platelets which are actually cellular fragments and they're involved with helping your blood clot.
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Very important when there is damage to the body.
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Red blood cells have an iron containing protein called hemoglobin and that is where the red coloring of blood comes from.
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So when we're talking about blood and we're just introing the circulatory system, we're going to focus on how this blood moves around in the human body.
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Human heart anatomy observes the heart divided into two distinct
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and separated partitions- a deoxygenated or low oxygen partition and an oxygenated partition.
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There are some human congenital heart conditions that can result in this oxygenated and deoxygenated blood mixing, however.
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More on that at the end.
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Capillaries carry blood away from the heart.
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Think A4 away.
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Arteries are typically oxygen rich, but there are exceptions.
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Veins generally carry blood to the heart.
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Veins typically are oxygen poor, but there are exceptions.
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Capillaries are small blood vessels
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and it is at the capillary level where oxygen is delivered to organs
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and tissues and where carbon dioxide will be picked up to travel back to the lungs.
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So looking at this heart, the right side, and that's the person's right, so for you it will look opposite,
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pumps deoxygenated blood, and the left side pumps oxygenated blood.
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We can also see four chambers, the right atrium and right ventricle, and the left atrium and the left ventricle.
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I like to remember that A comes before V in the alphabet, so that helps me remember that A's for atria are at the top of the heart, V for ventricles are at the bottom of the heart.
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The heart also contains valves, which we'll see when we get to tracing the pathway of blood.
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The valves are one-way structures that help separate the chambers and also prevent backflow of blood.
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Ready to take the adventure of a lifetime?
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An adventure tracing the pathway of blood through the heart?
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We're going to start with blood that is in a human toe.
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This blood is deoxygenated.
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It needs to get to the heart so
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that it can be pumped to the lungs to pick up oxygen and then be spread throughout the body.
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It's going to get there through the vena cava.
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Inferior vena cava to be specific as the superior vena cava is above the heart.
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The blood enters the right atrium.
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The right atrium contracts, pushing the blood through the tricuspid valve, into the right ventricle.
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The right ventricle contracts, pumping the blood through the pulmonary valve to the pulmonary artery.
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By the way, when you see the word pulmonary, it likely involves lungs.
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The pulmonary artery takes blood to the lungs.
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The lungs are where red blood cells in the blood will take on oxygen and release carbon dioxide.
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Now this blood is oxygenated.
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It needs to return to the heart so that the heart can pump it throughout the body.
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The oxygenated blood travels through a pulmonary vein to the left atrium.
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The left atrium contracts and the blood travels through the mitral valve, also known as the bicuspid valve, into the left ventricle.
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The left ventricle contracts and pumps the blood through the aortic valve and out a major artery known as the aorta.
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The aorta is a major artery that carries oxygenated blood throughout the body.
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Now I don't want to neglect the fact that the heart needs its own blood supply for delivery of oxygen and glucose.
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The heart can receive this blood supply through coronary arteries.
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Coronary arteries branch off the aorta and eventually deliver blood into capillaries.
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These capillaries deliver oxygen and glucose to the heart.
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veins will take the deoxygenated blood to the right atrium where the blood will eventually travel the pathway to become oxygenated.
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In fact, to quiz yourself, can you pause the video and trace the pathway of blood again starting with the right atrium?
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Okay, all together.
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Right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery, lungs, back through the pulmonary vein,
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left atrium, mitral valve, left ventricle, aortic valve, aorta.
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Takes it to the body and then it will eventually return through the vena cava back to the right atrium again.
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Whew, it almost makes you want to turn it into a song.
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But we won't.
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The significance of the pathways, how they interact, the coordination of contraction, and many more elements are part of every beat of your heart.
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A human heart beats over 100,000 times per day, so it's significant that every beat is coordinated and blood is directed where it should go.
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The complexity of the cardiac cycle, which is the coordinated sequence of the heart's contractions and relaxations, isn't something this short video can go into.
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Hopefully a separate video on that soon.
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One last thing.
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There are many conditions in which the heart doesn't function correctly.
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Anatomically, some heart conditions change the pathway flow of blood.
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One example that we had mentioned before is an atrial septal defect.
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The septum is the muscular wall that separates the right and left side of the heart.
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So a septal defect could mean an opening and oxygen-rich blood could mix with oxygen-poor blood.
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Depending on the size, this can cause further problems such as an abnormal heartbeat, stroke, or potentially heart failure in severe cases.
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Some medications can help the symptoms, or surgery can be an option.
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There continues to be more advancements for treating cardiovascular conditions.
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If you have interest in the amazing field of cardiology, take a look at the suggested further reading links in the video details.
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Well, that's it for the Amoeba Sisters, and we remind you to stay curious.
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Warum dieses Video tolles Material fürs Englischsprechen ist

Dieses Video über das Kreislaufsystem eignet sich hervorragend fürs Englisch sprechen üben – und das hat mehrere Gründe. Zuerst: Die Sprache ist klar und verständlich, ohne zu technisch zu sein. Der Sprecher verwendet einfache Sätze, um komplexe Dinge zu erklären, was perfekt fürs Shadowing ist. Außerdem geht es um ein alltägliches Thema (unser Körper), das du leicht mit deinem eigenen Wissen verbinden kannst. So lernst du nicht nur Vokabeln, sondern auch, wie man wissenschaftliche Inhalte verständlich kommuniziert. Und das Beste: Die Geschichte des Blutes, das durchs Herz reist, hat eine klare Struktur – ideal, um die Shadowspeak-Technik zu üben, bei der du die Sätze direkt nachsprechen kannst.

Was macht die Sprache so natürlich? Ein paar Beispiele

Lass uns ein paar Sätze aus dem Video genauer anschauen. Zuerst: „Did you ever wonder after you eat breakfast and your food is digested, how is that glucose getting transported around your body?“ Hier verwendet der Sprecher eine Frage, um die Zuhörer*innen zu involvieren – eine typische Technik, um Gespräche lebendig zu halten. Die Satzstruktur ist nicht zu kompliziert, aber sie hat eine natürliche Pause nach „digested“, die du bei deinem Englisch Shadowing beachten solltest. Ein weiteres Beispiel: „Veins that you see under your skin may look blue or green by the way, but that involves the way they appear under the skin and the reason for this would make a great physics topic – but I digress.“ Der Sprecher korrigiert sich leichterweise mit „but I digress“, was in natürlicher Sprache häufiger vorkommt als man denkt. Das zeigt, dass es okay ist, nicht perfekt zu sein – und macht das Nachsprechen einfacher. Und schließlich: „Ready to take the adventure of a lifetime? An adventure tracing the pathway of blood through the heart?“ Wiederholung mit einem kleinen Twist – so baut man Spannung auf. Das ist eine tolle Möglichkeit, deine Intonation zu üben.

Dein einfacher Practice-Routine fürs Shadowing

Probier diesen einfachen Loop aus, um mit dem Video zu üben: 1. Horchen: Spiel einen kurzen Abschnitt (30-60 Sekunden) des Videos ab und konzentriere dich auf die Rhythmus und Intonation. 2. Nachsprechen: Stoppe das Video und spreche die Sätze sofort nach – so schnell und genau wie möglich. Nutze die shadowing site deiner Wahl, um dir die Aufnahme zu merken. 3. Vergleichen: Höre dir deine Aufnahme und das Original an. Achte auf Unterschiede in der Lautstärke, Pausen und Betonung. 4. Wiederholen: Mach den gleichen Abschnitt 3-5 Mal, bis du das Gefühl hast, dass es flüssig klingt. Start mit einfachen Teilen (z. B. die Einführung über Blut) und arbeite dich dann zu komplexeren Passagen (z. B. den Weg des Blutes durchs Herz) hinauf. So verbessern sich nicht nur deine Sprachkenntnisse, sondern auch dein Selbstvertrauen im Englisch sprechen.

Grammatik in diesem Video

Die Strukturen, die der Sprecher am häufigsten verwendet, mit den genauen Worten aus dem Video:

StrukturIm Video
Passiv be + Partizip Perfekt – wichtig ist, was geschieht, nicht wer es tutis digested · are often drawn · is delivered
Relativsätze who / which + Satz – eine Zusatzinformation über eine Person oder Sachecells which can · platelets which are · cycle, which is

Was ist die Shadowing-Technik?

Shadowing ist eine wissenschaftlich fundierte Sprachlerntechnik, die ursprünglich für die professionelle Dolmetscherausbildung entwickelt und durch den Polyglotten Dr. Alexander Arguelles populär gemacht wurde. Die Methode ist einfach aber wirkungsvoll: Du hörst englisches Audio von Muttersprachlern und wiederholst es sofort laut — wie ein Schatten, der dem Sprecher mit nur 1–2 Sekunden Verzögerung folgt. Anders als passives Hören oder Grammatikübungen zwingt Shadowing dein Gehirn und deine Mundmuskulatur, gleichzeitig echte Sprachmuster zu verarbeiten und zu reproduzieren. Studien zeigen, dass es Aussprachegenauigkeit, Intonation, Rhythmus, verbundene Sprache, Hörverständnis und Sprechflüssigkeit signifikant verbessert — was es zu einer der effektivsten Methoden für die IELTS Speaking-Vorbereitung und reale englische Kommunikation macht.

Shadowing-Technik: die vollständige Schritt-für-Schritt-Anleitung lesen →