What is meant by the action potential threshold? Choose the correct option
A) Critical level of depolarization required to trigger an action potential
B) Critical level of hyperpolarization required to trigger an action potential
C) The action potential threshold is the same as the generator potential
D) Critical level at which electrical current is injected through a microelectrode
Ans: A
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In a person with Klinefelter's syndrome, there is _____
A) an extra X chromosome B) an extra Y chromosome C) no X chromosomes D) no Y chromosomes
In the emergency department you examine a patient complaining of severe maxillary sinus pain. Upon looking in his mouth, you observe severely degenerated maxillary molars
The patient admits that he has not been treated by a dentist for many years and recently had an upper posterior toothache. Which of the following is the most likely cause of the patient's pain? A) An infection from an upper molar has spread along the inferior alveolar nerve to the maxillary sinus. B) An infection has spread via the root of an upper maxillary molar into the maxillary sinus. C) Poor dental hygiene has resulted in alveolar bone retraction with accompanying fracture of a tooth and invasion of the maxillary sinus by oral bacteria. D) Poor dental hygiene has caused the root of a maxillary molar to break and invade the maxillary sinus. E) Poor dental hygiene has weakened the maxillary facial buttress causing both the toothache and sinus pain.
Gregory has taken antacids much of his adult life and now, at age 68, continues to take them nearly daily. What risk is associated with frequent use of antacids by elderly individuals?
A) spending money on remedies that do not work B) paradoxical hypersecretion of acid C) masking signs of a GI bleed or GI cancer D) physical dependence
The health consequences of binge eating are primarily related to ________.
Fill in the blank(s) with the appropriate word(s).