To reach your hands and feet blood has to leave your heart Left Ventricle under very high pressure Blood Pressure The aorta has the highest pressure 100mm Hg As the blood gets farther away and the blood vessels get smaller the pressure decreases ID: 753697
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Slide1
Blood PressureSlide2
Blood Pressure
To reach your hands and feet, blood has to leave your heart (Left Ventricle) under very
high pressure
. Slide3
Blood Pressure
The aorta
has the highest pressure. (100mm Hg)
As the blood gets farther away and the blood vessels get smaller, the pressure decreases.
The capillaries have a much lower blood pressure. (35mm Hg)
The lowest pressure is in the Vena Cava. (2 mm Hg)Slide4
Blood PressureSlide5
Blood Pressure is a ratio
=
when the ventricles =
contract
Highest
Pressure
SYSTOLIC
=
when the ventricles =
relax
Lowest Pressure
DIASTOLICSlide6
Blood PressureSlide7
Blood Pressure
Measured with a sphygmomanometerSlide8
How does the sphygmomanometer work?
It’s an inflatable cuff that cuts off the circulation in your arm
When the pressure drops, you can HEAR blood forcing through the artery with a stethoscope (Systolic)
When you HEAR NOTHING, it means blood is flowing easily with no resistance in the arteries. (Diastolic)Slide9
Blood PressureSlide10
Normal blood pressure of teenager
Ranges between 120/70 and 115/75Slide11
What can affect your blood pressure?
Volume of blood
Heart Rate
Diameter of arteries
Loss of elasticity of arteries
Viscosity of bloodSlide12
Hypertension
High Blood Pressure = Hypertension
Increases risk of heart failure and cerebral hemorrhage or stroke Slide13
Smoking & Hypertension
Smoking causes high blood pressure
Thickens blood
Speeds up the heart
Constricts the blood vessels
Over time, causes loss of elasticity of arteries Slide14
Stress & Hypertension
Stress causes high blood pressure
Stimulates adrenal gland which speed up the heart rate
Constricts blood vessels