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Chapter Assessment Lesson 11.3
Learning Key Terms and Concepts
Which layer provides a smooth, frictionless surface for the flow of blood in a vessel?
A. tunica media
B. tunica intima
C. tunica externa
D. medulla oblongata
Which vessel has the thickest, strongest, and most elastic walls?
A. artery
B. capillary
C. exchange vessel
D. vein
Blood is carried to the lungs by the _____.
A. pulmonary vein
B. pulmonary artery
C. aorta
D. inferior vena cava
The arteries carry blood _____.
A. away from the heart
B. to the lungs
C. to the lungs only
D. to the heart
The smallest, most numerous vessels in the body are the _____.
A. venules
B. arterioles
C. capillaries
D. veins
Blood returning to the heart via the inferior vena cava and the superior vena cava collects in the _____.
A. left ventricle
B. right ventricle
C. right atrium
D. left atrium
Blood pressure measured when the left ventricle contracts is called _____ pressure.
A. diastolic
B. stroke
C. systolic
D. mean
The artery located on the side of your neck, where you can clearly feel your pulse, is called the _____.
Thinking Critically
Why is blood considered a connective tissue?
Drawing on the information you studied in the first three lessons, explain why low blood pressure is considered a potentially dangerous condition.
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