Nervous System

The entire spinal cord is divided into ________ segments.

31

Nerve tracts, or fasciculi, would be found in the-----------------

Anterior White Columns

Mary is in an automobile accident and injures her spinal cord. She has lost feeling in her right hand and her doctor tells her that it is the result of swelling compressing a portion of her spinal cord. Which part of her cord is likely to be compressed?

Ascending Tract

Most neurons lack centrioles. This observation explains-------------------

CNS neurons cannot regenerate

The dorsal root ganglia contain--------------

Cell Bodies of sensory neurons

The brain and spinal cord comprise the ________ nervous system.

Central Nervous system

The subarachnoid space contains---------------

Cerebral Spinal Fluid

The third and fourth ventricles are linked by the

Cerebral aqueduct

The region of the brain that is involved in conscious thought and intellectual function as well as processing somatic sensory and motor information is the—

Cerebrum

A neural cortex is found on the surface of the--------------------

Cerebrum and Cerebellum

Each of the following is a function of the nervous system, except--------------

Control, coordinate, and integrate

The outermost covering of the spinal cord is the-------------------

Dura Matter

The layer of the meninges that is tightly bound to the surface of the neural tissue is the-------------------

Pia Mater

Blood vessels directly supplying the spinal cord are found in the

Pia mater

The tracts that connect the cerebellum to the brain stem are located in the-------

Pons

Damage to the superior colliculi of the mesencephalon would interfere with the ability to----------------

Reacting to a bright light

Ascending tracts------------- (function?)

conduct sensory impulses up the spinal cord to the brain

If the dorsal root of a spinal nerve is severed--------------

incoming sensory information would be disrupted.

The adult spinal cord extends only to which vertebral level?

level of the first or second lumbar vertebrae

Which of the following is not a function of cerebrospinal fluid?

provides ATP for impulse transmission

If the sodium-potassium pumps in the cell membrane fail to function, all of the following occur, except:------------------

the intracellular concentration of potassium ions will increase

Damage to large numbers of oligodendrocytes in the CNS would result in-----

Decrease production of cerebral spinal fluid ...

Which of the following links the cerebral hemispheres with the brain stem?

Diencephalon

The outermost connective tissue covering of spinal nerves is the---------

Epineurium

Bundles of axons in the spinal cord are called-------------------

Fascicles

The epidural space contains-------------

Fat and Small Blood Vessels

Damage to ependymal cells would affect the----------

Formation of cerebral spinal fluid

Axons crossing from one side of the spinal cord to the other within the gray matter are found in the----------

Gray Commissure

Compression of a cranial nerve by a tumor causes a loss of tongue movement. Which cranial nerve is affected?

Hypoglossal Nerve

Divisions of the cerebral hemispheres that are named after the overlying skull bones are---------------

Lobes

Bill contracts a viral disease that destroys some of the cells in the anterior gray horns in the lumbar region of his spinal cord. As a result of the disease which of the following would you expect?

Loss of sensation in his torso

Spinal nerves are ________ nerves.

Mixed nerves

The specialized membranes that protect the spinal cord are termed-----------

Spinal Meninges

The dorsal and ventral roots of each spinal segment unite to form a

Spinal Nerve

In diagnosing bacterial and viral infections of the nervous system, samples of cerebrospinal fluid are extracted for analysis. This procedure would logically withdraw fluid for analysis from the----------------

Subarachnoid space

During embryonic development, which of the following brain vesicles will form the cerebrum?

Telencephalon

Visual and auditory information are processed by the-------------

Temporal Lobe

The walls of the diencephalon form the------------------

Thalamus, hypothalamus,and third ventricle

Which of the following is the site of cerebrospinal fluid production?

The Choroid Plexus

In the spinal cord, white matter is organized into ascending and descending tracts grouping into

The Columns (Dorsal, Lateral and Vertical)

The projections of gray matter toward the outer surface of the spinal cord are called-----

The Horns (Dorsal, Lateral and Vertical)

Damage to which of the following cranial nerves could result in death?

The Vagus

Ten-year-old Tina falls while climbing a tree and lands on her back. Her frightened parents take her to the local emergency room where she is examined. Her knee jerk reflex is normal and she exhibits a plantar reflex (negative Babinski reflex). These results suggest that--------------------

Tina suffered no damage to her spinal cord

Jean needs to have a tooth filled. Her dentist gives her a shot of novocaine to numb the branches of one of the cranial nerves so she won't feel any discomfort. What cranial nerve is the dentist numbing?

Trigeminal

The cranial nerve that has three branches is the---------------

Trigeminal

Many medications introduced into the blood stream cannot directly affect the neurons of the CNS because----------------

astrocytes- they cannot get through bilayer

Side to side movements of the spinal cord are prevented by the--------------

denticulate ligaments

In the peripheral nervous system, Schwann cells participate in the repair of damaged nerves by

forming a cellular cord that directs axonal regrowth

Enlargements of the spinal cord occur-

in those spinal segments that control the limbs

Parkinson's disease is the result of-----------------

inadequate production of dopamine by substantia nigra neurons