Circulatory System Concepts Assessment

The video tutorial explains the meaning of blood pressure readings, focusing on the significance of systolic and diastolic pressures. It covers the differences between arteries, veins, and capillaries, including their structure and function. The tutorial also discusses how blood flows through these vessels, the role of the heart, and the importance of maintaining healthy blood pressure levels to prevent health issues like heart attacks and strokes.

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

• To carry blood away from the heart

• To carry blood towards the heart

• To exchange gases with tissues

• To store blood

Which blood vessel carries low oxygen blood away from the heart?

• Aorta

• Pulmonary artery

• Vena cava

• Pulmonary vein

What is the role of smooth muscle in blood vessels?

• To produce blood cells

• To provide a smooth surface for blood flow

• To regulate the internal diameter of the vessel

• To store oxygen

How does blood move through veins?

• By smooth muscle and movement

• By high pressure from the heart

• By the pumping action of the heart

• By gravity alone

Why do veins have valves?

• To exchange gases

• To prevent blood from flowing backward

• To increase blood pressure

• To store extra blood

What does the top number in a blood pressure reading represent?

• Capillary pressure

• Diastolic pressure

• Venous pressure

• Systolic pressure

What is considered a normal blood pressure reading?

• 115/77 mmHg

• 130/90 mmHg

• 140/100 mmHg

• 120/80 mmHg

What is the main risk associated with prolonged high blood pressure?

• Increased blood volume

• Increased risk of infection

• Decreased oxygen levels

• Increased risk of heart attack and stroke

What happens to blood pressure as it moves from arteries to capillaries?

• It fluctuates randomly

• It decreases

• It remains constant

• It increases

What is the significance of the diastolic pressure in a blood pressure reading?

• It measures pressure between heartbeats

• It measures pressure in veins

• It measures pressure during heart contraction

• It measures pressure in capillaries