The pharyngoesophageal sphincter is normally closed to prevent esophageal secretions from entering the pharynx during breathing
Indicate whether the statement is true or false
F
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Which of the following substances would be most acidic?
A) lemon juice, pH = 2 B) urine, pH = 6 C) tomato juice, pH = 4 D) white wine, pH = 3 E) stomach secretions, pH = 1
Acclimatization to altitude ________.
A. decreases ventilation B. stimulates increased blood cell synthesis C. increases the affinity of hemoglobin for oxygen D. All of the choices are correct.
A football player sustained an injury to his hamstring group. What muscles belong to the hamstring group and what would be the effect of the injury on this group?
What will be an ideal response?
Which of the following is NOT a function of the tensor tympani and stapedius muscles?
A. protection of the inner ear against continuous loud sounds B. protection of the delicate inner ear from sudden intermittent loud sounds C. reflexive contraction when vocalizing to reduce the loudness of your own voice D. optimization of the state of the inner ear for hearing over certain frequency ranges