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6:11
05:33A professor unexpectedly blew a loud horn in his anatomy and physiology class. The students looked up, startled. The reflexive movements of their eyes were mediated by the:
a. Cerebral cortex
b. Inferior olives
c. Raphe nuclei
d. Superior colliculi
e. Nucleus gracilis
a. What is the function of the basal nuclei?
b. Which basal nuclei form the striatum?
c. Which arches over the diencephalon?
All of the following descriptions refer to dorsal column–medial lemniscal ascending pathways except one:
a. They include the fasciculus gracilis and fasciculus cuneatus.
b. They include a chain of three neurons.
c. Their connections are diffuse and poorly localized.
d. They are concerned with precise transmission of one or a few related types of sensory input.
List four ways in which the CNS is protected.
A number of brain structures are listed below. If an area is primarily gray matter, write a in the answer blank; if mostly white matter, respond with b.
________ (1) cerebral cortex
________ (2) corpus callosum and corona radiata
________ (3) red nucleus
________ (4) medial and lateral nuclear groups
________ (5) medial lemniscus
________ (6) cranial nerve nuclei
________ (7) spinothalamic tract
________ (8) fornix
________ (9) cingulate and precentral gyri
A patient has suffered a cerebral hemorrhage that has caused dysfunction of the precentral gyrus of his right cerebral cortex. As a result:
a. He cannot voluntarily move his left arm or leg.
b. He feels no sensation on the left side of his body.
c. He feels no sensation on his right side.
