Blood Vessels and Blood Pressure

Open Ended

How does blood circulate through the body?

Open Ended

What are the four types of tissues that cells can form in organs?

Multiple Choice

Which of the following structures is present in veins but not in arteries?

• Valves

• Smooth muscle

• Endothelium

• Basement membrane

Multiple Choice

Which of the following best describes the structural differences between arteries, veins, and capillaries?

• Arteries have thick muscular walls, veins have valves, and capillaries are one cell thick.

• Arteries have valves, veins have thick muscular walls, and capillaries are elastic.

• Veins and arteries are both one cell thick, while capillaries have thick walls.

• Capillaries have valves, arteries are one cell thick, and veins are elastic.

Multiple Select

Which features are common to both arteries and veins?

• Endothelium (Inner skin tissue layer)

• Valves

• Smooth muscle

• Elastic Layer

Multiple Select

Based on the diagrams, which of the following statements about veins are correct?

• Veins have valves to prevent backflow.

• Veins rely on skeletal muscle contraction to help blood flow.

• Veins have the thickest walls of all blood vessels.

• Veins carry blood away from the heart.

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Open Ended

Explain how the nervous system regulates blood pressure through vasoconstriction and vasodilation.

Multiple Choice

How does blood pressure create a pulse in the arteries, and how can it be measured?

• Blood pressure creates a pulse only in veins, measured by thermometer

• Blood pressure stretches arteries, creating a pulse that can be measured by feeling the artery or using a blood pressure cuff

• Blood pressure does not affect pulse, which is measured by X-ray

• Blood pressure creates a pulse in capillaries, measured by stethoscope

Multiple Choice

What is the main function of arteries in the circulatory system?

• To carry blood away from the heart

• To connect arteries and veins

• To carry blood to the heart

• To exchange gases and nutrients

Multiple Choice

During which phase do elastic arteries expand due to the increased blood pressure?

• Ventricular contraction (systole)

• Ventricular relaxation (diastole)

• Atrial contraction

• Atrial relaxation

Multiple Choice

What is the difference between systolic and diastolic blood pressure?

• Systolic is the lowest pressure, diastolic is the highest pressure

• Systolic is measured in veins, diastolic in arteries

• Systolic is the pressure during ventricular contraction, diastolic is during ventricular relaxation

• Systolic is only present in capillaries, diastolic only in arteries

Multiple Choice

How do the structure and function of capillaries differ from those of arteries?

• Capillaries have thick walls and carry blood away from the heart

• Capillaries are thin-walled and allow exchange of substances between blood and tissues

• Capillaries have valves to prevent backflow

• Capillaries transport blood under high pressure

Multiple Choice

Which type of blood vessel has the greatest total cross-sectional area and the lowest velocity of blood flow?

• Arteries

• Capillaries

• Veins

• Arterioles

Multiple Choice

Which statement best describes how the circulatory system responds when the external environment is cold and body heat needs to be conserved?

• Vasoconstriction of the blood vessels near the surface of the skin reduces the amount of heat that is dissipated from the skin.

• Vasoconstriction of the blood vessels near the surface of the skin increases the amount of heat that is dissipated from the skin.

• Vasodilation of blood vessels near the surface of the skin reduces the amount of heat that is dissipated from the skin.

• Vasodilation of blood vessels near the surface of the skin increases the amount of heat dissipated from the skin.

Multiple Choice

Which of the following best describes the function of capillaries in the circulatory system?

• They carry blood away from the heart under high pressure.

• They return blood to the heart under low pressure.

• They allow the exchange of gases, nutrients, and wastes between blood and tissues.

• They regulate blood pressure by vasoconstriction and vasodilation.

Open Ended

Explain how vasodilation and vasoconstriction help regulate body temperature, using the diagrams and images provided.

Open Ended

Explain how the structure of capillaries enables the exchange of gases and nutrients with tissues.

Multiple Choice

  Compared to arteries, veins 

• have a pleated endothelium.
  
• have thinner walls.
  
• have more smooth muscle in their tunica media. 
• hold their shape better when cut. 

Multiple Choice

Which of the following does NOT assist in the return of venous blood to the heart?

• veins have one-way valves

• the contraction of skeletal muscles squeeze the vein

• veins have a larger diameter therefore can hold more blood

• the contraction of muscle layers in the veins keeps the blood flowing in the right direction

Multiple Choice

What is the main function of valves in veins?

• To increase blood pressure

• To prevent backflow of blood

• To speed up blood flow

• To allow exchange of gases

Multiple Choice

Which of the following statements about veins is correct?

• Veins carry blood away from the heart

• Veins have thick, elastic walls to withstand high pressure

• Veins contain valves to prevent backflow of blood

• Veins connect arteries and capillaries

Open Ended

Compare the structure and function of arteries, veins, and capillaries using the information from the table.

Multiple Choice

What is blood vessel 2?

• Arteries

• Veins

• Capillaries

Multiple Choice

Which of the following characteristics are true for arteries?

• Thick-walled and elastic fiber

• Valves present

• Low pressure

• Pulse not present

Multiple Choice

The large vessel on the left is a(n)

• artery

• capillary

• vein

Multiple Choice

At which end of the capillary is tissue fluid reabsorbed?

• Arterial end

• Venous end

Multiple Choice

How many layers of cells make up the wall of a capillary?

• 1

• 2

• 3

• 4

Multiple Choice

Skeletal muscles help blood to move towards the heart when it

• contract.

• relax.

Open Ended

Summarize what you have learned about how blood circulates through the body and the roles of arteries, veins, and capillaries.