Factors that affect Blood Flow

What is blood pressure?

• The amount of force exerted on the walls of arteries as the heart pumps blood.

• The volume of blood in the circulatory system.

• The rate at which blood flows through the veins.

• The pressure exerted by the blood on the heart valves.

What is blood viscosity?

• The rate at which blood is produced in the body.

• The thickness and stickiness of blood, affecting its flow through vessels.

• The amount of oxygen carried by the blood.

• The total volume of blood in the circulatory system.

Atherosclerosis is when the blood vessels become lined with plaque. How does this affect blood flow?

• Plaque buildup increases resistance and reduces blood flow.

• Plaque buildup has no effect on blood flow.

• Plaque buildup decreases resistance and increases blood flow.

• Plaque buildup only affects blood flow in the heart.

How does dehydration affect blood flow?

• Dehydration increases blood flow and decreases blood viscosity.

• Dehydration has no effect on blood flow.

• Dehydration decreases blood flow and increases blood viscosity.

• Dehydration increases blood viscosity and decreases blood flow.

What is the significance of maintaining proper hydration for blood flow?

• It helps maintain optimal blood viscosity and flow, ensuring efficient circulation.

• It increases the volume of blood in the body.

• It reduces the risk of heart disease.

• It helps in the absorption of nutrients in the intestines.

What effect does losing a lot of blood have on blood pressure?

• It increases blood pressure due to higher blood volume.

• It has no effect on blood pressure.

• It decreases blood pressure due to decreased blood volume.

• It causes blood pressure to fluctuate unpredictably.

What happens to blood vessels during vasodilation?

• Blood vessels constrict, reducing blood flow.

• Blood vessels widen, allowing for increased blood flow.

• Blood vessels become rigid, limiting blood flow.

• Blood vessels collapse, stopping blood flow.

What is the effect of increased blood viscosity on circulation?

• Increased blood viscosity can speed up circulation and make it easier for the heart to pump blood.

• Increased blood viscosity can have no effect on circulation.

• Increased blood viscosity can slow down circulation and make it harder for the heart to pump blood.

• Increased blood viscosity can cause blood vessels to dilate and improve circulation.

What factors can influence blood viscosity?

• Hydration levels, temperature, and the presence of certain diseases.

• Only hydration levels and temperature.

• Dietary choices and exercise habits.

• Genetics and age.

What role does heart rate play in blood flow?

• An increase in heart rate typically increases blood flow to meet the body's demands, especially during exercise.

• Heart rate has no effect on blood flow.

• A decrease in heart rate increases blood flow.

• Heart rate only affects blood flow during sleep.