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Transcript
An adult is experiencing inferior alternating hemiplegia. Axons in the pyramid on the left side of the medulla and adjacent axons of the hypoglossal nerve are injured. Which statement best describes the condition? A) It is associated with the posterior cerebral artery. B) Muscles of the lower face are weak on the right side. C) The protruded tongue deviates to the right side. D) Brisk DTRs are present in the right arm. E) Stroking the left foot produces a Babinski response. DTRs = deep tendon reflexes = muscle stretch reflexes Climbing fiber input to the cerebellum: A) excites granule cells. B) decreases when novel events occur. C) originates in the contralateral inferior olivary nucleus. D) inhibits cells in the deep nuclei. E) provides weak input to Purkinje cells via parallel fibers. Neurons in which of these hypothalamic nuclei give rise to axons that extend into the posterior pituitary through the infundibulum? A) preoptic B) anterior C) supraoptic D) arcuate E) ventromdial A tumor near the apex of the left lung damages a nearby portion of the sympathetic chain ganglia on that side. Which of the following conditions applies in this case? A) reduction in tear formation in left eye B) absence of blink (corneal) reflex in left eye C) peredrine has no effect on pupil diameter of left eye D) pupillary miosis in left eye E) no pupillary light reflex in left eye