Navigating the Pathways of Blood

Blood vessels ensure efficient nutrient delivery and waste removal to cells by:

• Forming a network similar to the nervous system

• Regulating blood pressure

• Carrying blood to within two or three cell diameters of cells

• Acting as a barrier to pathogens

Which of the following represents a classification of blood vessels outside the heart?

• Pulmonary and systemic vessels

• Aorta and vena cava

• Coronary and subclavian vessels

• Arteries and veins

Which of the following statements best describes veins compared to arteries?

• Veins carry oxygenated blood away from the heart.

• Veins carry deoxygenated blood towards the heart with thinner walls and less elastic tissue.

• Veins have thicker walls with more elastic tissue and smooth muscle cells.

• Veins regulate blood pressure more actively than arteries.

Which direction does blood typically flow in veins, and what is the usual oxygenation status of the blood?

• Away from the heart; oxygenated

• Toward the heart; oxygenated

• Away from the heart; deoxygenated

• Toward the heart; deoxygenated
  

Which direction does blood typically flow in the arteries, and what is the usual oxygenation status of the blood?

• Toward the heart; deoxygenated

• Away from the heart; deoxygenated

• Toward the heart; oxygenated

• Away from the heart; oxygenated

As arteries branch into smaller vessels, what structural change occurs in their walls?

• The amount of elastic tissue decreases, while smooth muscle increases

• The amount of smooth muscle decreases, while elastic tissue increases

• The walls become thicker and more rigid

• The walls remain unchanged in composition

Which of the following represents a classification of arteries based on their size and function?

• Coronary, carotid, and femoral arteries

• Pulmonary, systemic, and coronary arteries

• Elastic arteries, muscular arteries, and arterioles

• Aorta, vena cava, and pulmonary trunk

Where does the exchange of substances like oxygen, nutrients, carbon dioxide, and waste products primarily occur between the blood and tissue fluid?

• Arteries

• Capillaries

• Veins

• Venules

Which of the following statements about capillaries is true?

• Capillaries have fewer vessels in the body compared to other types of blood vessels.

• Blood flows through capillaries faster than through arteries.

• Capillaries have thicker walls compared to arteries.

• Capillaries have thinner walls and a higher abundance in the body compared to other blood vessel types.

How are veins typically classified from smallest to largest?

• Venae cavae, coronary veins, and pulmonary veins

• Elastic veins, muscular veins, and venules

• Venules, small veins, medium-sized veins, and large veins

• Systemic veins, pulmonary veins, and arterioles