Blood flow is generated by the __________________.
Blood pressure results when that flow encounters ___________ from the vessel walls.
1. "Beating" of the heart or the heart muscles contracting.
2. Resistance
Blood pressure is expressed in _______ of mercury and is written as __________.
1. Units
2. mmHg (millimeters of mercury)
Blood flows in layers within the lumen of blood vessels with the layers in the middle of the lumen flowing fastest. This is known as _________ flow.
Laminar
Blood pressure fluctuates with each heartbeat. The pulse you feel in your wrist is a ____________ created by the contracting heart ejecting blood.
blood flow (representation of the heart rate)
The maximum pressure exerted by blood against the artery wall is known as _______ pressure (SP) and is the result of ventricular __________.
Normal SP is about ______ mmHg.
1.Systolic
2. Diastole
3. 120
What does the Dicrotic notch represent?
Usually used as a marker for the end of systole or ejection period but its actually a small downward deflection in the arterial pulse or pressure contour immediately following the closure of the semilunar valves.
___________ pressure (DP) is the lowest pressure in the artery and is a result of ventricular _______________.
Normal DP is about_____mmHg.
1. Diastolic
2. Relaxation
3. 80
Pulse Pressure (PP) is the difference between _________ pressure and _______ pressure.
1. Systolic
2. Diastolic
Mean arterial pressure (MAP) is the calculated average pressure in the arteries. it is the closer to the diastolic pressure because the heart spends more time in ___________________.
Write the equation for mean arterial pressure:__________________.
1. Diastole (relaxation)
2. MAP= DP + 1/3(SP-DP)
When taking blood pressure, inflate the cuff so that blood flow is _________ in the blood vessel.
Open the valve slowly, releasing the pressure. The first sound you hear through the stethoscope is recorded as the ____________ pressure. The sounds you hear are due to the ___________________ of the blood. When you don't hear any sounds, this is recorded as the____________ prssure.
1. Stopped (trapped)
2. Systolic
3. Turbulant flow
4. Diastolic
Calculate PP, given SP= 130 mmHg and DP= 70 mmHg.
PP= SP-DP
PP= 130-70
PP= 60 mmHg
Caluculate MAP, given SP=130 mmHg and DP= 70 mmHg.
MAP= DP + 1/3(SP-DP)
MAP= 70 + 1/3(130-70)
MAP= 70 + 1/3(60)
MAP= 70 + 20
MAP= 90 mmHg