The ________ have walls that are one cell thick.
A. arteries
B. capillaries
C. veins
D. venules
E. arterioles
Answer: B
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Muscle fibers in ________ smooth muscle not only respond to neurotransmitters, but also stimulate each other to contract and produce peristalsis.
Fill in the blank(s) with the appropriate word(s).
Which method of sterilization uses gamma rays or beta particles and is chiefly used by large manufacturing companies?
a. dry heat b. ethylene oxide c. hydrogen peroxide gas plasma d. ionizing radiation
What is the best sample for urine collection?
a. any random urine sample b. a catheterized urine sample c. a clean-catch midstream urine sample d. a sample from an ostomy bag
Which of the following statements best describes the right side of the heart?
A. It is a high-pressure pump that moves blood with a high oxygen concentration. B. It is a high-pressure pump that moves blood with a low oxygen concentration. C. It is a low-pressure pump that moves blood with a low oxygen concentration. D. It is a low-pressure pump that moves blood with a high oxygen concentration.