The four curves of the adult spinal column are not all present at birth. Which of the following are the secondary curves, those that do not appear until several months later?
A) cervical and lumbar
B) thoracic and lumbar
C) sacral and lumbar
D) thoracic and sacral
E) cervical and sacral
Answer: A
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A) hemophilia. B) pernicious anemia. C) myeloid leukemia. D) lymphoid leukemia. E) jaundice.
The connective tissue of ________ adults is less elastic and less flexible.
A. older B. younger
During an unforced exhalation/expiration, which would NOT be true?
A. Alveolar pressure is greater than atmospheric pressure. B. Intrapleural pressure is greater than alveolar pressure. C. Intrapleural pressure becomes leess negative. D. The diaphragm relaxes. E. Lung volume decreases.
Cerumen is a secretion that
A. lubricates vellus hairs and waterproofs the skin of the limbs. B. lubricates the ear canal and traps debris before it reaches the eardrum. C. cools the body through water evaporation. D. tends to cause acne on the skin of the face. E. acts as a pheremone.