The correct answer is option (c) blood viscosity
Which is most significant source of blood flow resistance?
In blood vessels, most of the resistance is due to vessel diameter . As vessel diameter decreases, the resistance increases and blood flow decreases. Very little pressure remains by the time blood leaves the capillaries and enters the venules.
What are the source of resistance to blood flow quizlet?
What are the three important sources of resistance? Blood viscosity, total blood vessel length, blood vessel diameter .
What vessels are the primary source of resistance to blood flow?
Arterioles have the most increase in resistance and cause the largest decrease in blood pressure. The constriction of arterioles increases resistance, which causes a decrease in blood flow to downstream capillaries and a larger decrease in blood pressure.
Which would increase resistance to blood flow quizlet?
Which of the following would increase resistance to blood flow? ... decrease viscosity of blood .
What are the three important sources of resistance to blood flow?
There are three important sources of resistance: vessel length, blood viscosity, and vessel diameter . Let’s discuss blood vessel length first.
What has the greatest impact on blood flow?
The variables affecting blood flow and blood pressure in the systemic circulation are cardiac output, compliance, blood volume, blood viscosity, and the length and diameter of the blood vessels. ... In the arterial system, as resistance increases, blood pressure increases and flow decreases.
Which of the following would decrease resistance to blood flow?
In the arterial system, vasodilation and vasoconstriction of the arterioles is a significant factor in systemic blood pressure: Slight vasodilation greatly decreases resistance and increases flow, whereas slight vasoconstriction greatly increases resistance and decreases flow.
Which of the following is not a source of resistance to blood flow in the circulatory vessels?
19 BLOOD VESSELS. Which of the following is NOT an important source of resistance to blood flow? Total blood volume is not an important source of resistance to blood flow.
Which valve will blood flow when leaving the right atrium?
Tricuspid valve : Allows blood to pass from the right atrium to the right ventricle; prevents blood from flowing back into the right atrium as the heart pumps (systole). 5. Right ventricle: Receives blood from the right atrium; pumps blood into the pulmonary artery.
Which of the following is directly proportional to blood flow?
Which of the following is directly proportional to blood flow? You correctly answered: blood vessel radius and pressure gradient .
What is systemic resistance to blood flow?
Peripheral vascular resistance (systemic vascular resistance, SVR) is the resistance in the circulatory system that is used to create blood pressure, the flow of blood and is also a component of cardiac function. When blood vessels constrict (vasoconstriction) this leads to an increase in SVR.
Where is blood flow the fastest?
For this reason, the blood flow velocity is the fastest in the middle of the vessel and slowest at the vessel wall. In most cases, the mean velocity is used.
Does erythropoietin hypersecretion increase blood flow?
Dehydration, increasing blood viscosity, vasoconstriction, increased resistance, erythropoietin hypersecretion, increasing red blood cell count, increasing blood vessel length . Occurs at the arterial end of a capillary; the movement of fluid out of blood.
What is the relationship between blood pressure resistance and flow Select all that apply?
Select all that apply. The relationship between blood flow and resistance is an inverse one: as resistance increases, blood flow decreases. Resistance decreases as the radius of a vessel increases. The greater the pressure difference, the greater the blood flow.
Which factors would increase blood viscosity?
Increased blood viscosity can be caused by an increase in red cell mass or increased red cell deformity, increased plasma levels of fibrinogen and coagulation factors , and dehydration.
