The heart is a muscle about?the size of a fist. It’s a pump?that squashes in and out around 80 times every minute, moving blood all around the body. If the heart stops pumping, the body stops working immediately.
Blood flow : Blood moves around the body in a circuit. It travels to the lungs to collect oxygen gas and delivers the oxygen around the body before coming back to the heart.
Vein : Blood traveling back to the heart from the body no longer carries oxygen. It travels through tubes called veins.
Artery : Blood being pumped from the heart to the body via the lungs carries oxygen in tubes called arteries.
Valve : Little doors in the heart called valves only open one way so that the blood can only travel in one direction.
Heart muscle : The heart is made?of cardiac muscle tissue, a special tissue that is only found in the heart.
Circulatory system : The heart and tubes that connect the blood to the body are called the circulatory system. Blood carries water, gases, sugar, and heat. The heart pumps blood around the circulatory system. Blood traveling through arteries carries oxygen. Capillaries are tubes that connect the veins and the arteries. Blood traveling in veins has delivered its oxygen.
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Chanchala sankhle
The heart is a muscle about?the size of a fist. It’s a pump?that squashes in and out around 80 times every minute, moving blood all around the body. If the heart stops pumping, the body stops working immediately.
Blood flow : Blood moves around the body in a circuit. It travels to the lungs to collect oxygen gas and delivers the oxygen around the body before coming back to the heart.
Vein : Blood traveling back to the heart from the body no longer carries oxygen. It travels through tubes called veins.
Artery : Blood being pumped from the heart to the body via the lungs carries oxygen in tubes called arteries.
Valve : Little doors in the heart called valves only open one way so that the blood can only travel in one direction.
Heart muscle : The heart is made?of cardiac muscle tissue, a special tissue that is only found in the heart.
Circulatory system : The heart and tubes that connect the blood to the body are called the circulatory system. Blood carries water, gases, sugar, and heat. The heart pumps blood around the circulatory system. Blood traveling through arteries carries oxygen. Capillaries are tubes that connect the veins and the arteries. Blood traveling in veins has delivered its oxygen.