BIO 212 Chapter 19 Exam Questions and Answers Fully Solved Latest Update 2025-2026
Which of the following layers of a vessel contains collagen fibers with scattered bands of
elastic
fibers? - Answers tunica externa
Blood is pumped into the pulmonary circuit from the - Answers right ventricle.
Blood returning from the systemic circuit enters the - Answers right atrium.
Which of the following is true about the inferior vena cava? - Answers It is a large vein
Which layer of a blood vessel contains concentric sheets of smooth muscle tissue? - Answers
Tunica media
Which layer of the arteriole wall that can contain smooth muscle and produce vasoconstriction?
- Answers Tunica media
The thoroughfare channel ends at the - Answers venule
Which of the following are capillaries with a perforated lining? - Answers Fenestrated capillaries
Materials can move across capillary walls by - Answers diffusion.
filtration.
reabsorption
What are the only blood vessels with walls that are thin enough to permit blood-tissue exchange?
- Answers Capillaries
Edema is favored when - Answers the plasma concentration of protein is reduced, endothelial
permeability goes up, and capillary hydrostatic pressure is elevated
Edema is NOT favored when - Answers Interstitial fluid movement increases
The continual movement of fluid through the interstitial spaces produced by capillary filtration
serves which of the following functions? - Answers 1. assists the transport of insoluble
substances that cannot enter the capillaries
2. accelerates the distribution of nutrients and hormones
3. helps carry toxins and bacteria to cells of the immune system
Which of the following layers of a vessel contains collagen fibers with scattered bands of
elastic
fibers? - Answers tunica externa
Blood is pumped into the pulmonary circuit from the - Answers right ventricle.
Blood returning from the systemic circuit enters the - Answers right atrium.
Which of the following is true about the inferior vena cava? - Answers It is a large vein
Which layer of a blood vessel contains concentric sheets of smooth muscle tissue? - Answers
Tunica media
Which layer of the arteriole wall that can contain smooth muscle and produce vasoconstriction?
- Answers Tunica media
The thoroughfare channel ends at the - Answers venule
Which of the following are capillaries with a perforated lining? - Answers Fenestrated capillaries
Materials can move across capillary walls by - Answers diffusion.
filtration.
reabsorption
What are the only blood vessels with walls that are thin enough to permit blood-tissue exchange?
- Answers Capillaries
Edema is favored when - Answers the plasma concentration of protein is reduced, endothelial
permeability goes up, and capillary hydrostatic pressure is elevated
Edema is NOT favored when - Answers Interstitial fluid movement increases
The continual movement of fluid through the interstitial spaces produced by capillary filtration
serves which of the following functions? - Answers 1. assists the transport of insoluble
substances that cannot enter the capillaries
2. accelerates the distribution of nutrients and hormones
3. helps carry toxins and bacteria to cells of the immune system
