REGULATION OF BLOOD PRESSURE

MABP = CO x TPR Mean Arterial Blood Pressure

MABP = CO x TPR Mean Arterial Blood Pressure Mean Arterial Blood Pressure = Average blood pressure in an individual, the overall blood pressure within your body.

MABP = CO x TPR Mean Arterial Blood Pressure Mean Arterial Blood Pressure = Average blood pressure in an individual, the overall blood pressure within your body. Cardiac Output = Volume of blood pumped out by the heart per minute.

MABP = CO x TPR Mean Arterial Blood Pressure Mean Arterial Blood Pressure = Average blood pressure in an individual, the overall blood pressure within your body. Cardiac Output = Volume of blood pumped out by the heart per minute. Total Peripheral Resistance = The combined resistance of a branched artery.

CO = HR x SV Cardiac Output

CO = HR x SV Cardiac Output Heart Rate = The number of times the heart is contracting per minute.

CO = HR x SV Cardiac Output Heart Rate = The number of times the heart is contracting per minute. Stroke Volume = The volume of blood ejected every time the heart contracts.

Branched Blood Vessel

MABP = DP + 1/3(PP) Mean Arterial Blood Pressure

MABP = DP + 1/3(PP) Mean Arterial Blood Pressure Diastolic Pressure = The minimum pressure in the arteries, which occurs near the beginning of the cardiac cycle when the ventricles are filled with blood

MABP = DP + 1/3(PP) Mean Arterial Blood Pressure Diastolic Pressure = The minimum pressure in the arteries, which occurs near the beginning of the cardiac cycle when the ventricles are filled with blood Systolic Pressure = The peak pressure in the arteries, which occurs near the end of the cardiac cycle when the ventricles are contracting.

MABP = DP + 1/3(PP) Mean Arterial Blood Pressure Diastolic Pressure = The minimum pressure in the arteries, which occurs near the beginning of the cardiac cycle when the ventricles are filled with blood Systolic Pressure = The peak pressure in the arteries, which occurs near the end of the cardiac cycle when the ventricles are contracting. Pulse Pressure = Systolic Pressure minus Diastolic Pressure

Vasodilation & Vasoconstriction

Hemorrhage

VR = BV/VC Venous Return

VR = BV/VC Venous Return Venous Return = The volume of blood returning to the heart.

VR = BV/VC Venous Return Venous Return = The volume of blood returning to the heart. Blood Volume = The volume of blood in an individual’s circulatory system.

VR = BV/VC Venous Return Venous Return = The volume of blood returning to the heart. Blood Volume = The volume of blood in an individual’s circulatory system. Venous Compliance = The degree to which a vein is capable of distending. Compliant veins have large diameters.

Stroke Volume SV = EDV – ESV

End-Diastolic Volume = The volume of blood in the ventricle at the end of filling.

Stroke Volume SV = EDV – ESV End-Diastolic Volume = The volume of blood in the ventricle at the end of filling. End-Systolic Volume = The volume of blood in the ventricle at the end of contraction and beginning of filling.

Frank-Starling Law The Frank-Starling Mechanism states that the greater the volume of blood entering the heart during diastole, the greater the volume of blood ejected during systolic contraction. Frank-Starling Law =

Frank-Starling Law The Frank-Starling Mechanism states that the greater the volume of blood entering the heart during diastole, the greater the volume of blood ejected during systolic contraction. Frank-Starling Law = Decreasing blood returning to the heart will make the heart contract weaker.

Response to Decreased MABP 1. Venoconstriction 2. Increased Contractibility 3. Increased Heart Rate 4. Vasoconstriction

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