Adults typically have how many molars?
a. 3
b. 6
c. 8
d. 12
Ans: d. 12
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Why does an adult not have as many bones as a child?
A. Osteoporosis leads to bone loss with age. B. Some separate bones gradually fuse with age. C. Many bones are replaced by cartilage with age. D. Bones are reabsorbed with age. E. Osteoclast activity overcomes osteoblast activity with age.
Which of the following is incorrect pertaining to the lumbar cistern?
A) It contains CSF. B) It contains the cauda equina. C) It contains the internal filum terminale. D) It typically begins in adults at L2. E) It contains epidural fat.
A chemical agent that kills or prevents the growth of microorganisms on living tissue is a(n):
A) disinfectant B) sterilizer C) antiseptic D) mydriatic
Hemoglobin
a. combines preferentially with O2 over any other substance. b. when combined with carbon dioxide is known as carboxyhemoglobin. c. plays a critical role in determining the amount of O2 that is exchanged between alveoli and blood, because it acts as a storage depot, removing dissolved O2 from the blood thereby keeping PO2 low and allowing net diffusion of O2 to continue until the hemoglobin is completely saturated. d. both (a) and (b) above. e. all of these answers