Chp 24 Flashcards
What are the tunics found in a typical blood vessel?
Blood vessels have three tunics: tunica intima, tunica media, and tunica externa.
How do arteries differ from veins?
Arteries have thicker walls and carry blood away from the heart, while veins have thinner walls and carry blood toward the heart.
What is the function of capillaries?
Capillaries facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.
Describe the path of blood flow from arteries to veins.
Blood flows from arteries to arterioles, then to capillaries, and finally to venules before entering veins.
What are the three types of capillaries?
The three types of capillaries are continuous, fenestrated, and sinusoidal.
How do continuous capillaries differ from fenestrated capillaries?
Continuous capillaries have uninterrupted endothelial cells, while fenestrated capillaries have pores that allow for increased permeability.
What role does the respiratory pump play in blood flow?
The respiratory pump helps propel blood through veins by creating pressure changes during breathing.
How does the skeletal muscle pump assist in blood circulation?
The skeletal muscle pump aids in blood flow through veins by compressing them during muscle contraction.
