Factors that affect Blood Flow

What factors can influence blood viscosity?

• Hydration levels

• Altitude

• Dietary fiber intake

• Exercise frequency

How does exercise affect blood vessels?

• Blood vessels constrict to reduce blood flow to muscles.

• Blood vessels remain unchanged during exercise.

• Blood vessels undergo vasodilation to increase blood flow to muscles.

• Blood vessels become rigid and less flexible.

Tags

NGSS.HS-LS1-3

What is the role of the heart in blood circulation?

• The heart pumps blood throughout the body, maintaining circulation and ensuring that tissues receive oxygen and nutrients.

• The heart filters blood to remove toxins and waste products.

• The heart stores blood until it is needed by the body.

• The heart regulates body temperature by controlling blood flow.

Why might a person feel dizzy after significant blood loss?

• Decreased blood volume and blood pressure.

• Increased oxygen levels in the blood.

• Excessive hydration of the body.

• High levels of adrenaline in the bloodstream.

Tags

NGSS.HS-LS1-3

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

• Increases blood pressure due to higher blood volume.

• Decreases blood volume, which in turn decreases blood pressure.

• Has no effect on blood pressure.

• Increases blood pressure temporarily before stabilizing.

Tags

NGSS.HS-LS1-3

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 flow and increases blood viscosity.

Tags

NGSS.HS-LS1-3

What is blood viscosity?

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

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

• The amount of oxygen carried by the blood.

• The total volume of blood in the circulatory system.

What is the primary function of blood?

• To transport oxygen, nutrients, hormones, and waste products throughout the body.

• To regulate body temperature and pH levels.

• To produce red blood cells and platelets.

• To store energy in the form of glucose.

What happens to blood vessels during vasodilation?

• Blood vessels constrict, reducing blood flow.

• Blood vessels remain unchanged, maintaining normal blood flow.

• Blood vessels widen, allowing for increased blood flow.

• Blood vessels become rigid, restricting blood flow.

Tags

NGSS.HS-LS1-3

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 to the muscles.

• Heart rate only affects blood flow during sleep.

Tags

NGSS.HS-LS1-3