Which structure allows upper respiratory infections to spread from the throat to the tympanic cavity?
A. Cochlear duct
B. Auditory canal
C. Tympanic cavity
D. Auditory (eustachian) tube
E. Oval window
Answer: D
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In the cellular immune response
A. T cells produce antibodies directly against antigens. B. T cells attach directly to antigens and destroy them. C. T cells attack healthy body cells. D. B cells produce antibodies directly against antigens.
Why are sounds produced by adult men usually lower in pitch than those produced by women?
A. The larynx in more vertical in men B. The glottis is wider in men C. The vocal folds are thinner and shorter in men D. The vocal folds are thicker and longer in men E. Men have larger lung volumes than women
Chemiosmosis
a. releases O2 onto a water molecule at the end of the ETS b. pumps H+ ions into the mitochondrial matrix c. transfers hydrogens from the ETS to NAD+ d. generates GTP, which is then converted into ATP e. does not perform any of the above functions
What are the three types of media influence? Give an example of each.
What will be an ideal response?