The circulatory system 2C

Check yor pulse

Your heart is a pump which pumps blood out around your body through your arteries. You can feel the blood pumping where the arteries are close to your skin. These are your pulse points, and if you feel gently with your fingertips you can count how fast your heart is beating. How to take your pulse: To find your pulse in your neck (carotid pulse). Put two fingers (not use inch) of your left hand onto your Adam's apple in your throat. Feel gently to the side of it, and you will find your pulse beating. Or To find your pulse in your wrist (radial pulse). Use two fingers (not use inch) of one hand to feel your radial pulse on the opposite wrist. When you have found a steady beat, count how many beats in 15 seconds (your friend uses a watch or clock). Repeat this count to be sure you have measured correctly (the number of pulses must be similar). Multiply your score by 4, and that will tell you your pulse rate per minute. Now repeat this count after walking in place and after running in place. Then you draw a Cartesian graph.

Check yor blood pressure

Everyone would like to have healthy, “normal” blood pressure. But what exactly does that mean? When your doctor takes your blood pressure, it’s expressed as a measurement with two numbers, with one number on top and one on the bottom, like a fraction. For example, 120/80. The top number refers to the amount of pressure in your arteries during contraction of your heart muscle. This is called systolic pressure. The bottom number refers to your blood pressure when your heart muscle is between beats. This is called diastolic pressure. Both numbers are important in determining the state of your heart. For a normal reading, your blood pressure needs to show a top number that’s between 90 and 120, and a bottom number that’s between 60 and 80. Note that blood pressure readings are expressed as millimeters of mercury. This unit is abbreviated as mm Hg. Blood pressure that is too low does not supply your body and heart with enough oxygenated blood. Low blood pressure is known as hypotension. Instead high pressure is known as hypertension. Now you measure your blood pressure with digital blood pressure monitor (sphygmomanometer).

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