Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
Do Arteries carry blood toward or away from the heart?
|
Arteries – carry blood away from heart
|
|
|
Do Veins carry blood toward or away from the heart?
|
Veins – carry blood toward heart
|
|
|
Name, in order, all the types of blood vessels, starting at the heart, going into the tissues, and returning to the heart.
|
Heart -> Elastic Arteries -> Muscular Arteries -> Arterioles -> Capillaries -> Venules -> Veins
|
|
|
What are the three layers of a blood vessel wall?
|
Tunica intima, Tunica media, Tunica externa
|
|
|
What kinds of tissue are in each layer of the blood vessel wall?
|
•Tunica intima - endothelium (simple squamous endothelium)
•Tunica media - Smooth muscle and sheets of elastin •Tunica externa - Loosely woven collagen fibers |
|
|
What is the endothelium?
|
a simple squamous epithelium that lines the lumen of all blood vessels; forms a slick surface that minimizes friction.
|
|
|
What is the difference between vasoconstriction and vasodilation? Which layer is responsible?
|
Vasoconstriction – decrease in lumen diameter
Vasodilation – increase in lumen diameter Tunica Media is responsible |
|
|
What are the three types of arteries?
|
Elastic arteries, Muscular arteries, Arterioles
|
|
|
What is the smallest kind of artery?
|
Arterioles
|
|
|
Which kind of artery is the aorta?
|
elastic artery
|
|
|
Which kind of artery plays an active role in vasoconstriction?
|
Muscular arteries
|
|
|
Elastic arteries have the ability to recoil and expand in response to pressure fluctuations generated by the beating heart. What function does this serve?
|
Elastic recoil maintains continuous blood flow during diastole
|
|
|
What is the function of capillaries?
|
Provide direct access to nearly every cell in the body
|
|
|
How do capillary walls differ from those of other blood vessels?
|
Thin walls facilitate exchange of materials between the blood and the interstitial fluid
|
|
|
What are the three types of capillaries?
|
Continuous, Fenestrated, Sinusoidal
|
