Xavier ABSN Adult II Exam 1 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
What are the 3 layers of blood vessels? - CORRECT ANSWER- ✔✔1. Tunica intima
2. Tunica media
3. Tunica adventitia
Tunica intima - CORRECT ANSWER- ✔✔Innermost layer that is comprised of endothelium
The endothelium helps provide a slick surface to facilitate the flow of blood
Tunica media (Arteries) - CORRECT ANSWER- ✔✔Middle layer comprised of smooth
muscle
Thicker than the tunica media of veins
Arteries need to be able to expand and recoil with each heart contraction
Tunia adventitia - CORRECT ANSWER- ✔✔Outermost layer that is comprised of
connective tissue
Protects and anchors the vessels
Veins have a thicker tunica adventitia than arteries
What should you know about smaller arterioles? - CORRECT ANSWER- ✔✔They are less
elastic than arteries but contain more smooth muscle
Having more smooth muscle promotes constriction and dilation
, Which of the vessels exert the major control over arterial blood pressure? - CORRECT
ANSWER- ✔✔Arterioles
What is the difference in pressure between arteries and veins? - CORRECT ANSWER-
✔✔Veins travel at a much lower pressure
Characteristics of veins - CORRECT ANSWER- ✔✔Thin walls
Larger lumen
Greater capacity
Valves
What supports venous return to the heart? - CORRECT ANSWER- ✔✔"Milking" action of
the skeletal muscles when contracting
The abdominal and thoracic pressure changes that occur with breathing
Capillaries - CORRECT ANSWER- ✔✔Contain 1 thin layer of tunica intima that is
permeable to the gases and molecules exchanged between blood and tissue cells
What factors affect arterial circulation? - CORRECT ANSWER- ✔✔1. Blood flow
2. Peripheral vascular resistance
3. Blood pressure
What 3 factors determine peripheral vascular resistance? - CORRECT ANSWER- ✔✔1.
Blood viscosity
2. Length of the vessel
3. Diameter of the vessel
Formula for mean arterial pressure (MAP) - CORRECT ANSWER- ✔✔MAP = CO x PVR
How can you estimate MAP? - CORRECT ANSWER- ✔✔Diastolic blood pressure + 1/3 of
the pulse pressure
ACTUAL Exam Questions and CORRECT
Answers
What are the 3 layers of blood vessels? - CORRECT ANSWER- ✔✔1. Tunica intima
2. Tunica media
3. Tunica adventitia
Tunica intima - CORRECT ANSWER- ✔✔Innermost layer that is comprised of endothelium
The endothelium helps provide a slick surface to facilitate the flow of blood
Tunica media (Arteries) - CORRECT ANSWER- ✔✔Middle layer comprised of smooth
muscle
Thicker than the tunica media of veins
Arteries need to be able to expand and recoil with each heart contraction
Tunia adventitia - CORRECT ANSWER- ✔✔Outermost layer that is comprised of
connective tissue
Protects and anchors the vessels
Veins have a thicker tunica adventitia than arteries
What should you know about smaller arterioles? - CORRECT ANSWER- ✔✔They are less
elastic than arteries but contain more smooth muscle
Having more smooth muscle promotes constriction and dilation
, Which of the vessels exert the major control over arterial blood pressure? - CORRECT
ANSWER- ✔✔Arterioles
What is the difference in pressure between arteries and veins? - CORRECT ANSWER-
✔✔Veins travel at a much lower pressure
Characteristics of veins - CORRECT ANSWER- ✔✔Thin walls
Larger lumen
Greater capacity
Valves
What supports venous return to the heart? - CORRECT ANSWER- ✔✔"Milking" action of
the skeletal muscles when contracting
The abdominal and thoracic pressure changes that occur with breathing
Capillaries - CORRECT ANSWER- ✔✔Contain 1 thin layer of tunica intima that is
permeable to the gases and molecules exchanged between blood and tissue cells
What factors affect arterial circulation? - CORRECT ANSWER- ✔✔1. Blood flow
2. Peripheral vascular resistance
3. Blood pressure
What 3 factors determine peripheral vascular resistance? - CORRECT ANSWER- ✔✔1.
Blood viscosity
2. Length of the vessel
3. Diameter of the vessel
Formula for mean arterial pressure (MAP) - CORRECT ANSWER- ✔✔MAP = CO x PVR
How can you estimate MAP? - CORRECT ANSWER- ✔✔Diastolic blood pressure + 1/3 of
the pulse pressure
