Exam 5: The Central Nervous System

The ____________________ consist of several masses of gray matter located deep within the cerebrum and play an important ____________________ role in motor control.

The withdrawal reflex for the arm requires an EPSP be generated on motor neurons that innervate the triceps muscle, and requires an IPSP be generated on neurons that innervate the biceps muscle.

The recycling of newly acquired information through short-term memory increases the likelihood of long-term memory consolidation.

Match the following structures to their descriptions. a.arachnoid villi b.subarachnoid space c.choroid plexuses d.dural sinuses e.dura mater -Tissue across which CSF is reabsorbed into the blood

Which function is not performed in the hypothalamus.

The central sulcus separates the ____________________ and ____________________ lobes.

Which is not a structural component of the limbic system?

The gray matter in the CNS consists of parts of neurons not covered with myelin.

A retrograde chemical messenger from the postsynaptic neuron can influence neurotransmitter release from the presynaptic neuron at a synapse during long-term potentiation.

During REM sleep, the limbic system becomes more active while the prefrontal cortex becomes less active; as a result, emotions outweigh reasoning during sleep.

Match the following structures to their descriptions. a.vestibulocerebellum b.spinocerebellum c.cerebrocerebellum -Regulates muscle tone; compares intentions of higher centers with performance of muscles and corrects any errors, especially with rapid phasic movements.

Excitoxicity, in which dying cells secrete chemicals that induce apoptosis in neighboring cells, is a process that occurs

Cerebrospinal fluid

Indicate which nervous pathway is being described by writing the appropriate letter in the blanks using the following answer code: a.ascending tracts b.descending tracts c.afferent neurons d.efferent neurons -Carry information from the PNS to the CNS

Indicate which nervous pathway is being described by writing the appropriate letter in the blanks using the following answer code: a.ascending tracts b.descending tracts c.afferent neurons d.efferent neurons -Includes the spinothalamic pathway

The limbic system

The most abundant type of neuron in the body is (are) the

Indicate which brain structure is associated with each function by writing the appropriate letter in the blank using the following answer code: a.cerebellum b.hypothalamus c.brainstem d.basal nuclei e.cerebral cortex -Compares the "intentions" of the higher centers with the "performance" of the muscles, and corrects any "errors"

Anterograde amnesia is the inability to recall recent past events.

Match the structure to its proper description. a.dorsal horn b.dorsal root c.dorsal root ganglion d.ventral horn e.ventral root f.lateral horn -Efferent fibers leave the spinal cord through this structure