Which of the following changes in the respiratory system does NOT occur because of the aging process?
A. The lungs become more elastic.
B. Hypoxic changes occur in other organ systems.
C. The lungs become less elastic.
D. The rib cage becomes less flexible.
E. The number of alveoli is reduced.
Answer: A
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Answer the following statements true (T) or false (F)
1. Some ecologists believe replacing old-growth forests with second-growth forests has caused an overall reduction in biodiversity. 2. When trees are cut down faster than they are replaced, forests become a nonrenewable resource. 3. The introduction of nonnative species into lakes disrupts the balance of the ecosystem but usually does not affect native species. 4. The National Wild and Scenic Rivers Act protects most of the waterways in the United States from development for public and commercial recreation use. 5. Dependence on oil, coal, and natural gas is the primary cause of air pollution, water pollution, and global warming.
Alcohol and drug abuse may cause mental health disorders or exacerbate preexisting mental health disorders
Indicate whether the statement is true or false.
Auditory information is transmitted from the cochlear nuclei to which of the following structures?
ANS: D Rationale: From the cochlear nuclei, auditory information is transmitted to three structures: (1) reticular formation, (2) inferior colliculus (directly and via the superior olive), and (3) medial geniculate body.
The emphasis in alternative therapies is
A. recovering from illness. B. wellness as a continual process. C. fighting infection. D. getting better.