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Unit 11- Assignment 1- P3
How to measure your pulse with your hand:
1
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2
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Press lightly, and feel carefully for your pulse
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Measure your pulse rate and rhythm
When you have found your pulse, use your watch or a clock with a second hand to count the
number of beats you feel for 15 seconds
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4
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This is your heart rate measured in beats per
minute
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Review your results
A normal pulse rate is between 60 and 100 beats per minute
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If at any point you felt your pulse rate fall out of rhythm with your foot tapping, you may
have an irregular heartbeat—a sign of atrial fibrillation
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Wrap the cuff around the upper arm about 2-3cm above the elbow, as shown in the diagram
below
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Clothing may cause a faint pulse and results
in a measurement error
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Constriction is the upper arm, caused by rolling up the sleeve may prevent accurate
readings
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Confirm that the index points within the proper fit range
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Rest your arm on the table
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Place the centre of the cuff at the safe height as your heart
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Do not measure right after physical exercise or a bath
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Heart rate experiment

The subject was exercising for five minutes, doing push-ups
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When he rests for 2 minutes, his heart rate decreases to

101bpm, whilst his blood pressure is 150/90
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When resting, his heart pumps at a normal rate, however it is higher when he starts exercising, as his
heart is trying to pump more oxygen (as a faster rate with more pressure) to the lungs and the other
parts of the body, so they can function efficiently
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The oxygen neutralises the lactic acid
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The function of this is to deliver materials
close to the tissues
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Gases like carbon dioxide and
oxygen can diffuse through the cells easily
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Before leaving the tissues, capillaries unite into venules, which merge to form larger and larger veins
that eventually return blood to the heart
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Their extensive branching
provides a sufficient surface area to pick up and deliver substances to all cells in the body
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This function is well supported by the
anatomy of the vessels
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As a result, gasses such as oxygen and carbon dioxide can diffuse through their walls, as can
lipid soluble substances
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This means that is
can exchange materials between the blood and the tissue cells efficiently
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The pressure that the blood is under is due to the
contraction of the heart is called hydrostatic pressure
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http://www
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co
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Oxygen and glucose diffuse from the blood into the tissue fluid and then into the cells
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Not all of
the fluid forced out of the capillaries is returned by osmosis and a network of vessels known as the
lymphatic system collects this excess fluid and returns it to the circulatory system

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