An eight-year-old boy comes home from school feeling feverish and complaining of a sore and swollen throat and cheeks. What common childhood disease might he have contracted? If he must have this disease, why is it better for him to have it this year than ten or more years later and what other complications can this disease cause?
What will be an ideal response?
The little boy has contracted mumps, a viral infection that preferentially targets the salivary glands, most often the parotids, although other organs may also become infected. The most common age for contracting this disease is between five and nine years of age. The first exposure stimulates antibody production and usually confers permanent immunity. In postadolescent males the mumps may also infect the testes and cause sterility, or the pancreas and cause diabetes, or also affect the nervous system.
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The release of neurotransmitter from a vestibular hair cell into the synapse with a sensory neuron would increase
A) when the stereocilia of the hair cell are displaced toward the kinocilium. B) in response to any mechanical stimulation of the hair cell. C) when the stereocilia are equally displaced to either side of the kinocilium. D) when the stereocilia of the hair cell are displaced away from the kinocilium.
Which statement regarding carbon dioxide transport in the blood is true?
A) The chloride shift occurs when Cl- moves out of RBCs in exchange for HCO3-. B) HCO3- dissociates into CO2 and O2. C) 25% is converted to H2CO3 by carbonic anhydrase. D) H2CO3 dissociates into H+ and HCO3-. E) 93% remains dissolved in plasma as CO2.
The heart, blood, and blood vessels combine to form which of the following?
A) a group of cells B) an organ system C) the smallest level of organization D) an organ E) an individual living entity
The common frame of reference used by anatomists to describe the relationship between body parts is called ________ position.
Fill in the blank(s) with the appropriate word(s).