The nursing instructor is teaching lung anatomy to a group of students. Which statement relates appropriately to the students' learning of lung anatomy?
1. "The lung receives air from the lower respiratory tract."
2. "There are three lobes in the lung tissue on the left."
3. "There are three lobes in the lung tissue on the right."
4. "The two main bronchi and bronchioles are part of the lungs."
3
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Unlike inflammatory cytokines, Toll-like receptors _____
a. are never secreted b. participate only in adaptive immune responses c. are expressed only by dendritic cells d. stimulate the production of acute-phase proteins e. induce fever.
Which of the following has limited the use of the HPV vaccine?
A. It causes serious side effects. B. The CDC recommends the vaccine for girls between the ages of 11 and 12, before they become sexually active. C. It does not prevent most of the strains of HPV that cause cervical cancer. D. It is expensive.
Although you know that alcohol is a central nervous system depressant, your friend says it is actually a stimulant because he does things that he wouldn't otherwise do after having a couple of drinks. He also feels less inhibited, more spontaneous, and more en- tertaining. The reason your friend experiences alcohol as a stimulant is that
a. alcohol has the same effect on the nervous system as amphetamines. b. alcohol has a strong placebo effect. c. the effects of alcohol depend almost entirely on the expectations of the user. d. alcohol depresses areas in the brain responsible for critical judgment and impulsiveness
Body mass index (BMI) is used almost exclusively to determine health risks and mortality rates associated with ____
a. excessive body weight b. excessive visceral fat c. lean body mass d. non-essential body fat e. excessive dieting or exercise