Blood vessels are tubes that go to all parts of your body.Your heart rate is how fast your heart is pumping.4. The Respiratory SystemYour lungs help you breathe in the oxygen you need.When you breathe in, a muscle at the bottom of your rib cage pulls down. This muscle is called the...
【答案】(1)brain(2)heart(3)liver(4)lungs(5)stomach (6)kidneys 结果一 题目 Do you know how your body works? Read the following passage and complete it usingthe names of the organs above.Think of the body like a school. At the top of the school is theheadmaster, known as the (1...
In this article, we will take a close look at how your lungs work and how they keep your body's cells supplied with oxygen and get rid of the carbon dioxide waste. We will explain some of the conditions and diseases that make breathing harder and cause the lungs to fail. We will also...
How Your Heart Works 05:56 How the Urinary System Works_HD 05:10 How Your Bones and Skeleton Works_HD 05:03 How Your Ears Work 04:52 How Your Hair Works_HD 04:54 How Your Immune System Works_HD 07:10 How Your Lungs Work_HD 05:02 How Your Muscles Work_HD 05:32 How Your Nose...
How Nicotine Works Prev NEXT By: Maria Trimarchi & Ann Meeker-O'Connell Nicotine in the BodyJust 10 seconds after a cigarette smoker inhales, nicotine is absorbed through the skin and the mucosal linings in the nose, mouth and lungs, and travels through the bloodstream to the brain. It ...
How many lungs does the human body have?The Human BodyThe human body is a complex and amazing structure. The fact that every cell, tissue, organ and organ system works properly each day is unbelievable. The major vital organs are the lungs, heart and brain....
Bird lungs differ from human lungs in the following ways: Bird lungs have a flow-through breathing system with small blood vessels whereas human...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
All these situations render the lungs unable to function normally. But mechanical ventilators take over the process, getting oxygen into the body when the respiratory system cannot. These machines can bypass constricted airways, and deliver h...
The lungs, for example, must be able to exchange oxygen and carbon dioxide with the blood without becoming clogged or damaged by contaminants or letting germs pass into the body. Your digestive tract is the largest of these outside-in structures. Because it passes through your entire body, ...
How Your Heart Works 05:56 How the Urinary System Works_HD 05:10 How Your Bones and Skeleton Works_HD 05:03 How Your Ears Work 04:52 How Your Hair Works_HD 04:54 How Your Immune System Works_HD 07:10 How Your Lungs Work_HD ...