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A&P Test #3

Stack #1

QuestionAnswer
What layer of the typical blood vessel is constructed from simple squamous epithelium? Tunica Intima
What feature is only found in arteries? Elastic membranes
What structural layer of blood vessels is most responsible for maintaining blood pressure? Tunica Media
What type of vessel is most suited to expand and recoil in response to the ejection of blood from the heart? Elastic artery
What best describes arteries? All carry blood away from the heart
Why are arterioles known as resistance vessels? The contraction and relaxation of the smooth muscle in their walls can change their diameter.
Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of? Capillaries
What type of vessel has a relatively large amount of smooth muscle compared to its elastic tissue? Muscular Artery (Designed to distribute blood and control flow)
What are successively larger vessels that carry blood toward the heart? Veins
Which blood vessels lack elastic tissue? Capillaries and venules
What is NOT an important source of resistance to blood flow? Total blood volume
What is NOT correct regarding the relationship between pressure, flow, and resistance in the cardiovascular system? Blood flow (F) is inversely proportional to the pressure gradient (Change Pressure) in the blood vessels.
What is the most significant source of blood flow? Blood vessel diameter
Calculate the mean arterial pressure (MAP) for a patient whose systolic blood pressure is 120 mm Hg and diastolic blood pressure is 70 mm Hg. 87 mm Hg
What is Pulse Pressure? Systolic pressure minus diastolic pressure
Which of the following hormones will lower blood pressure? Atrial Natriuretic Peptide (ANP)
What is involved in long-term regulation of blood pressure? Renin-angiotensin-aldosterone mechanism
What is Peripheral Resistance? Increases as blood viscosity increases
What is the velocity of blood flow? Slowest in the capillaries because the total cross-sectional area is the greatest.
Anteriolar blood pressure increases in response to what? Increasing heart rate, Increasing stroke volume, and Rising blood volume
Created by: jlanier1
 

 



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