Sheena Grace Bitgue - Heart Rate & Blood Pressure Virtual Lab PDF

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Name: HEART RATE & BLOOD PRESSURE VIRTUAL LAB Purpose: To examine heart rate and blood pressure and to determine their relationship. Procedure and Background Information: Heart rate is measured with a stethoscope. Heart rate is the number of times your heart beats per minute. The higher the number, the harder your heart is working to pump blood around your body. Blood pressure is measured with a sphygmomanometer (blood pressure cuff). It is expressed as two numbers. The first number is the systolic pressure and the second number is the diastolic pressure. These two numbers are written like a fraction to give your blood pressure. Systolic pressure is the amount of pressure in your arteries during the contraction of your heart muscle. Diastolic pressure is the pressure when your heart muscle is between beats. A higher blood pressure indicates that your heart is working too hard to pump blood to the rest of your body. Observations: FACTOR Standing (normal level)

HEART RATE (beats per minute) 80

Lying down

70

Running

140

BLOOD PRESSURE Systolic: 120 Diastolic: 80 Blood Pressure: 120/80 Systolic: 110 Diastolic: 70 Blood Pressure: 110/70 Systolic: 160 Diastolic: 90 Blood Pressure: 160/90

Analysis Questions: 1. Is the blood pressure lying down higher or lower than standing? Why do you think this is? The blood pressure lying down is lower than standing because when the heart is at rest between beats blood pressure falls to its lowest value, the diastolic pressure.

2. Compare the heart rate and blood pressure of standing (normal level) and exercising. a. What is the effect of exercise on heart rate? Explain why this effect occurs. The frequency of the beat when you exercise gets higher depending on physical activities and temperature of your body. The higher the heart rate the harder your heart is pumping blood throughout the body.

b. What is the effect of exercise on blood pressure? Explain why this effect occurs. The blood pressure or systolic pressure rises because the heart beats harder and faster to circulate the blood to deliver oxygen to the muscles.

c. What is the relationship between heart rate and blood pressure? Blood pressure rises and falls with the phases of heartbeat. 3. List two factors (other than exercise) that could influence your blood pressure on a short term basis. Emotional state and alcohol or caffeine can influence your blood pressure on a short term basis.

4. If you were told that you have high blood pressure, list three lifestyle changes that you could make to reduce your blood pressure. ● Eat a plant based diet rich in vegetables and fruits. ● Be physically active and lose extra body weight. ● Limit the sodium intake.

5. List two health problems (diseases and/or disorders) that are related to having high blood pressure.

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Name: Heart attack or stroke Weakened and narrowed blood vessels in your kidneys....