Ch 3 and 4 Exam Review

In some neurons, the axon is insulated by the...

• myelin sheath

• ganglion

• nerve fiber

• sylvian sheath

What parts make up the central nervous system (CNS)?

• brain

• brain and spinal cord

• spine

• skull

What part of the brain has been surgically altered in "split-brain" patients?

• cerebellum

• hippocampus

• cerebrum

• corpus callosum

A drug that enhances the effect of a neurotransmitter by mimicking its effects or by preventing its breakdown in the synapse is referred to as what?

• an antagonist

• an excitatory postsynaptic potential

• an agonist

• a transducer

As Jill walked towards the stage to give her speech, her heartbeat accelerated, her blood pressure rose, and she began to sweat. Jill's state of arousal was activated by what part of the nervous system?

• sympathetic

• central

• parasympathetic

• peripheral

A squirrel fails to react with fear to a signal of impending shock if they have suffered damage to the...

• hippocampus

• hypothalamus

• corpus callosum

• amygdala

The term "soma" is synonymous with...

• cell body

• axon

• neuron

• dendrite

Which part of the cerebral cortex directs the muscle movements involved in producing speech?

• amygdala

• angular gyrus

• Broca's area

• reticular formation

What is the brief electrical charge that travels down an axon called?

• refractory period

• resting potential

• action potential

• all-or-one impulse

Which region of the brain controls our breathing and heartbeat?

• pons

• medulla

• thalamus

• hippocampus