NR 509 Neuro Exam Test Questions and Answers
Central Nervous System
Answer: The brain and spinal cord
Peripheral Nervous System
Answer: all the nerve fibers outside the brain and spinal cord: the 12 pairs of cranial nerves, the 31 pairs
of spinal nerves, and all their branches
Peripheral: afferent messages
Answer: sensory messages to the CNS from sensory receptors
Peripheral: efferent messages
Answer: motor messages from the CNS out to muscles and glands
Peripheral: autonomic messages
Answer: govern the internal. organs and blood vessels
Cerebral cortex
Answer: the outer layer of nerve cell bodies; it looks like "gray matter" because it lacks myelin.
Center for a human's highest functions. governing thought, memory, reasoning, sensation, and
voluntary movement
hemisphere
Answer: half of the cerebrum; the left hemisphere is dominant in 95% of people, including those who
are left handed
Lobes
Answer: four parts of each hemisphere
Frontal lobe
Answer: associated with personality, behavior, emotions, and intellectual function
The precentral gyrus of the frontal lobe initiates voluntary movement
Parietal lobe
Answer: Postcentral gyrus is the primary center for sensation
Occipital lobe
Answer: primary visual receptor center
Temporal lobe
Answer: behind the ear, has the primary auditory reception center, with functions of hearing, taste, and
smell
Wernicke's area
Answer: in the temporal lobe is associated with language comprehension. When damaged in the
person's dominant hemisphere, receptive aphasia results
Central Nervous System
Answer: The brain and spinal cord
Peripheral Nervous System
Answer: all the nerve fibers outside the brain and spinal cord: the 12 pairs of cranial nerves, the 31 pairs
of spinal nerves, and all their branches
Peripheral: afferent messages
Answer: sensory messages to the CNS from sensory receptors
Peripheral: efferent messages
Answer: motor messages from the CNS out to muscles and glands
Peripheral: autonomic messages
Answer: govern the internal. organs and blood vessels
Cerebral cortex
Answer: the outer layer of nerve cell bodies; it looks like "gray matter" because it lacks myelin.
Center for a human's highest functions. governing thought, memory, reasoning, sensation, and
voluntary movement
hemisphere
Answer: half of the cerebrum; the left hemisphere is dominant in 95% of people, including those who
are left handed
Lobes
Answer: four parts of each hemisphere
Frontal lobe
Answer: associated with personality, behavior, emotions, and intellectual function
The precentral gyrus of the frontal lobe initiates voluntary movement
Parietal lobe
Answer: Postcentral gyrus is the primary center for sensation
Occipital lobe
Answer: primary visual receptor center
Temporal lobe
Answer: behind the ear, has the primary auditory reception center, with functions of hearing, taste, and
smell
Wernicke's area
Answer: in the temporal lobe is associated with language comprehension. When damaged in the
person's dominant hemisphere, receptive aphasia results
