PORTAGE A&P 2 MODULE 3 PT 1 EXAM
QUESTIONS AND ANSWERS (VERIFIED
AND UPDATED)
What is the primary function of the circulatory system? - ANS To transport blood, nutrients,
hormones, oxygen, and other gases to and from cells.
What are the two main components of the circulatory system? - ANS The Cardiovascular
System and the Lymphatic System.
What does the cardiovascular system include? - ANS The heart and all blood vessels (arteries,
veins, and capillaries).
What is the role of the lymphatic system? - ANS To transport lymph, which contains white
blood cells and waste products, back into the bloodstream.
What are the generalized functions of the circulatory system? - ANS Transport of materials,
capillary exchange, immune defense, hemostasis, regulation of body temperature, and
maintaining acid-base balance.
What is an artery? - ANS A blood vessel that carries blood away from the heart.
What are arterioles? - ANS The smallest arteries that branch into tiny capillaries.
@2026/2027 ALLRIGHTS RESERVED.
, What is the function of capillaries? - ANS To exchange nutrients and wastes between blood
and tissues.
What is a venule? - ANS A small blood vessel that carries blood from capillaries to veins.
What do systemic arteries do? - ANS Provide oxygen-rich blood to the body's tissues.
What happens to blood in systemic veins? - ANS It returns to the heart with less oxygen after
delivering oxygen to cells.
What is the pulmonary circuit? - ANS The circuit where pulmonary arteries carry oxygen-poor
blood to the lungs for gas exchange.
What do pulmonary veins do? - ANS Return freshly oxygenated blood from the lungs to the
heart.
What is a lumen in the context of blood vessels? - ANS The hollow passageway through
which blood flows.
How do the lumens of arteries compare to those of veins? - ANS Arteries have smaller
lumens than veins, which helps maintain blood pressure.
What structural feature helps arteries maintain higher pressure? - ANS Thicker walls and
smaller diameters compared to veins.
What are vasa vasorum? - ANS Small blood vessels within the walls of larger vessels that
supply blood to those vessels.
@2026/2027 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS (VERIFIED
AND UPDATED)
What is the primary function of the circulatory system? - ANS To transport blood, nutrients,
hormones, oxygen, and other gases to and from cells.
What are the two main components of the circulatory system? - ANS The Cardiovascular
System and the Lymphatic System.
What does the cardiovascular system include? - ANS The heart and all blood vessels (arteries,
veins, and capillaries).
What is the role of the lymphatic system? - ANS To transport lymph, which contains white
blood cells and waste products, back into the bloodstream.
What are the generalized functions of the circulatory system? - ANS Transport of materials,
capillary exchange, immune defense, hemostasis, regulation of body temperature, and
maintaining acid-base balance.
What is an artery? - ANS A blood vessel that carries blood away from the heart.
What are arterioles? - ANS The smallest arteries that branch into tiny capillaries.
@2026/2027 ALLRIGHTS RESERVED.
, What is the function of capillaries? - ANS To exchange nutrients and wastes between blood
and tissues.
What is a venule? - ANS A small blood vessel that carries blood from capillaries to veins.
What do systemic arteries do? - ANS Provide oxygen-rich blood to the body's tissues.
What happens to blood in systemic veins? - ANS It returns to the heart with less oxygen after
delivering oxygen to cells.
What is the pulmonary circuit? - ANS The circuit where pulmonary arteries carry oxygen-poor
blood to the lungs for gas exchange.
What do pulmonary veins do? - ANS Return freshly oxygenated blood from the lungs to the
heart.
What is a lumen in the context of blood vessels? - ANS The hollow passageway through
which blood flows.
How do the lumens of arteries compare to those of veins? - ANS Arteries have smaller
lumens than veins, which helps maintain blood pressure.
What structural feature helps arteries maintain higher pressure? - ANS Thicker walls and
smaller diameters compared to veins.
What are vasa vasorum? - ANS Small blood vessels within the walls of larger vessels that
supply blood to those vessels.
@2026/2027 ALLRIGHTS RESERVED.
