Circulatory system Exam Questions and Answers Already Passed Latest Update 2025-2026
Which blood vessel have the thickest walls? - Answers arteries
How many walls does an artery have? - Answers 3
Which two types of blood vessels use contraction and have muscles? - Answers arteries,
arterioles
Which type of blood vessel is one cell layer thick? - Answers capillaries
Which type of blood vessel allows the exchange of materials (active/passive transport)? -
Answers capillaries
What allows blood to travel from the arteriole to the venule without passing through capillaries?
- Answers sphincters (portal system)
Does the blood pressure increase or decrease when more capillary beds are closed? - Answers
increase
Where do portal systems both begin and end? - Answers capillary beds
What are two examples of portal systems? - Answers mesentric capillaries to hepatic portal vein
to hepatic capillaries, hypothalamus capillaries to portal vein to anterior pituitary capillaries
Which two types of blood vessels have valves? - Answers veins, venules
Which type of contraction helps venules and veins move blood back to the heart? - Answers
skeletal
Which type of blood vessel constricts when stressed? - Answers venules
Which blood vessel system contains half of the blood in the body? - Answers venous system
Which type of blood vessel(s) have low total cross-sectional areas? - Answers arteries, veins
Which type of blood vessel(s) have high velocity? - Answers arteries, veins
Which type of blood vessel(s) has the highest total cross-sectional area? - Answers capillaries
Which type of blood vessel(s) has the lowest velocity? - Answers capillaries
Why do capillaries have the lowest velocity? - Answers blood-tissue exchange
Which type of blood vessel(s) has the highest pressure? - Answers arteries
Which type of blood vessel(s) has the lowest pressure? - Answers veins
Which specific blood vessel has the highest oxygen content? - Answers pulmonary vein
Which blood vessel have the thickest walls? - Answers arteries
How many walls does an artery have? - Answers 3
Which two types of blood vessels use contraction and have muscles? - Answers arteries,
arterioles
Which type of blood vessel is one cell layer thick? - Answers capillaries
Which type of blood vessel allows the exchange of materials (active/passive transport)? -
Answers capillaries
What allows blood to travel from the arteriole to the venule without passing through capillaries?
- Answers sphincters (portal system)
Does the blood pressure increase or decrease when more capillary beds are closed? - Answers
increase
Where do portal systems both begin and end? - Answers capillary beds
What are two examples of portal systems? - Answers mesentric capillaries to hepatic portal vein
to hepatic capillaries, hypothalamus capillaries to portal vein to anterior pituitary capillaries
Which two types of blood vessels have valves? - Answers veins, venules
Which type of contraction helps venules and veins move blood back to the heart? - Answers
skeletal
Which type of blood vessel constricts when stressed? - Answers venules
Which blood vessel system contains half of the blood in the body? - Answers venous system
Which type of blood vessel(s) have low total cross-sectional areas? - Answers arteries, veins
Which type of blood vessel(s) have high velocity? - Answers arteries, veins
Which type of blood vessel(s) has the highest total cross-sectional area? - Answers capillaries
Which type of blood vessel(s) has the lowest velocity? - Answers capillaries
Why do capillaries have the lowest velocity? - Answers blood-tissue exchange
Which type of blood vessel(s) has the highest pressure? - Answers arteries
Which type of blood vessel(s) has the lowest pressure? - Answers veins
Which specific blood vessel has the highest oxygen content? - Answers pulmonary vein
