BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
CARDIOVASCULAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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increased fluid, decreased cardiac output, and decreased pressure
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increased fluid, decreased cardiac output, and increased pressure
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increased fluid, increased cardiac output, and decreased pressure
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increased fluid, increased cardiac output, and increased pressure
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Detailed explanation-1: -How Blood Volume Affects Blood Pressure. Changes in blood volume affect arterial pressure by changing cardiac output. An increase in blood volume increases central venous pressure. This increases right atrial pressure, right ventricular end-diastolic pressure and volume.
Detailed explanation-2: -Blood pressure increases with increased cardiac output, peripheral vascular resistance, volume of blood, viscosity of blood and rigidity of vessel walls. Blood pressure decreases with decreased cardiac output, peripheral vascular resistance, volume of blood, viscosity of blood and elasticity of vessel walls.
Detailed explanation-3: -The cardiovascular system combats low blood volume by constricting blood vessels until the body reaches a blood pressure that restores proper perfusion pressure. Blood volume and blood pressure are interconnected through the renal and circulatory system, specifically the renin-angiotensin-aldosterone system (RAAS).
Detailed explanation-4: -Cardiac output is the product of heart rate (HR) and stroke volume (SV) and is measured in liters per minute. HR is most commonly defined as the number of times the heart beats in one minute. SV is the volume of blood ejected during ventricular contraction or for each stroke of the heart.
Detailed explanation-5: -Cardiac output as you know is made up of heart rate and stroke volume. At rest these are relatively constant however with exercise the heart beats faster and more blood is pumped out with each beat. These factors both contribute to a rise in BP, as would any other factor that caused the heart to speed up.