Circulatory System
<p style="color:#dbdbdb ;padding:20px; border-left:5px solid #B40001;">Our body is made up of certain cells and tissues that help in maintaining the balance of the heart, blood and the capillaries with the rest of the body. It is the blood that travels continually through the Circulatory System. The Heart, Lungs and the Blood Vessels together form a part of the Circulatory System. Without the Circulatory System, it would be difficult for the body to fight diseases or maintain a stable internal environment. </p>
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Cardiovascular System
<p style="color:#dbdbdb ;padding:20px; border-left:5px solid #F9EAE3;">What is the first thing that comes to your mind when you think about the word ‘Cardiovascular’? It is the ‘thumping’ of the heartbeat, isn’t it? The Cardiovascular System is powered with a hard working organ – the ‘heart’. This is because the heart pumps blood throughout the body even when it is at rest. The sound of the heartbeat is made by the closing of the four valves of the heart.</p>
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Urethra
<p style="color:#dbdbdb ;padding:20px; border-left:5px solid #979193;">The tube that connects the urinary bladder to the outside of the body is Urethra. In males, conduit for semen during sexual intercourse is the Urethra. Also, It serves as a passage for the flow of urine. In case of females, the Urethra is shorter and surfaces above the vaginal opening. </p>
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