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What is the heart? The heart is a muscle. It pumps blood around the body, all day and all night. Why is blood important? Blood picks up and carries oxygen (from the lungs) and nutrients (from the...
A hearth (/ hɑːrθ /) is the place in a home where a fire is or was traditionally kept for home heating and for cooking, usually constituted by at least a horizontal hearthstone and often enclosed to varying degrees by any combination of reredos (a low, partial wall behind a hearth), fireplace, oven, smoke hood, or chimney.
Jan 19, 2024 · What is a hearth? A fireplace hearth is the floor within a fireplace that the coal basket, log burner, or modern gas fire sits on. A hearth is made from fireproof or non-combustible materials, such as stone, brick (masonry) or concrete.
- What Is The Function of The Human Heart?
- What Is The Structure of The Human Heart?
- What Does The Heart's Electrical System do?
- How Does Blood Flow Around The Heart and The body?
- How Do Your Heart and Lungs Add Oxygen to Your Blood?
- What Are Heart and Circulatory Diseases?
- What Causes Your Heart and Circulatory System to Go Wrong?
- What Puts Me at Risk of Heart and Circulatory Disease?
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Each day, your heart beats around 100,000 times. This continuously pumps about five litres (eight pints) of blood around your body through a network of blood vessels called your circulatory system. This blood delivers oxygen and nutrients to all parts of your body to help your organs and muscles work properly. Your blood also carries away unwanted ...
Your heart has a left side and a right side, they are separated by a thin muscular wall called the Septum. Both sides of your heart have an upper chamber and a lower chamber. 1. the upper chambers are called the left atrium and the right atrium(or the atria) 2. the lower chambers are called the left ventricle and the right ventricle. Your heart mus...
Your heart’s electrical system tells your heart when to contract and when to relax to keep your blood pumping regularly. The instructions to contract and relax are carried by electrical signals. The electrical signals are sent from the sinus node which is known as your heart’s natural pacemaker. Usually, the sinus node will send the electrical sign...
Your heart is linked to the rest of the circulatory system with blood vessels called arteries and veins. 1. your arteries deliver oxygen-rich blood from the heart to other areas of your body 2. your veins return the de-oxygenated blood from your organs back to your heart 3. your arteries and veins are connected by even smaller blood vessels called ...
Your blood flows through your heart and your lungs to become re-oxygenated before being pumped to the rest of your body. Oxygen is added to your blood in four main steps, they are: 1. The right atrium receives the low-oxygen blood that has just travelled round the body. The right atrium pumps the blood to the right ventricle. 2. The right ventricle...
Sometimes the heart and circulatory system don’t work like they should, this can cause heart and circulatory diseases (also called cardiovascular diseases). We fund research into these conditions and their risk factors, including: 1. coronary heart disease(heart attack and angina) 2. congenital heart disease 3. inherited heart conditions 4. stroke ...
Problems with your heart and circulatory system, including heart attack or a stroke, are usually caused by a gradual build-up of fatty material (called atheroma) in the arteries around the heart and in the arteries that supply blood to your brain. The fatty material lines the walls of heart’s coronary arteries making the space for blood to flow nar...
Many heart and circulatory diseases share the same risk factors including: 1. poorly managed diabetes 2. high blood pressure 3. high cholesterol 4. being overweight or obese 5. smoking 6. drinking too much alcohol. Heart and circulatory diseases can be worrying but the good news is that there are lots of things you can do to reduce your risk of dev...
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We’re funding vital research to help prevent and treat people living with heart and circulatory diseases. But more needs to be done. Your support funds crucial research so that we can beat these conditions and save lives. DONATE
3 days ago · heart, organ that serves as a pump to circulate the blood. It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks.
- The Editors of Encyclopaedia Britannica
- In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the mu...
- The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and ano...
- The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimula...
- The rhythmic noises accompanying the heartbeat are called heart sounds. The two distinct sounds are heard, a low, slightly prolonged “lub” (first s...
Sep 30, 2020 · Here, learn about the structure of the heart, what each part does, and how it works to support the body. We also explore the electrical impulses and the role of CPR.
The heart is a muscle which pumps blood non-stop through a huge network of blood vessels, delivering oxygen and nutrients to every part of the body. It has two sides: one side pumps blood...
