For distant vision, which event is true?
a. The ciliary body moves toward the lens.
b. The ciliary muscle relaxes.
c. The refractive power of the lens increases.
d. The lens is rounded.
Answer: b. The ciliary muscle relaxes.
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Which is not correct regarding teeth?
A. The apical foramen is the opening at the tip of the root. B. The outer surface of enamel forms the crown of a tooth. C. The primary component of teeth is dentin. D. The root is covered by cementum. E. The central portion of a tooth is the sinus cavity.
With age, connective tissues
A. become more flexible. B. become thinner. C. lose their blood supply. D. lose their pliability and resiliency. E. increase in mass.
Which of the following factors does not contribute to venous blood return?
What will be an ideal response?
In the diagram, which structure(s) moves towards the center of the sarcomere (closer together) when the fiber contracts?
a) A b) D c) J d) Both A and D. e) None of these are correct.