Comprehensive Radiographic Pathology - Ch. 8 Nervous System Questions with Correct Answers

Comprehensive Radiographic
Pathology - Ch. 8 Nervous System
Questions with Correct Answers

peripheral nervous [system] (PNS) - ANSWERSWhat system consists of the cranial,
spinal, and autonomic nerves.

central nervous system (CNS) - ANSWERSbrain and spinal cord

Afferent - ANSWERSWhat neurons, also known as sensory neurons, carry impulses to
the central nervous system from the peripheral receptors.

central nervous system (CNS) to the peripheral effectors - ANSWERSEfferent neurons
conduct impulses away from the

autonomic nervous system - ANSWERSThe smooth muscle, cardiac muscle, and
glandular epithelial tissue are controlled by the

neuron - ANSWERSThe basic unit of the nervous system is the

axon - ANSWERSA single threadlike extension, a(n) ________ leads away from the
nerve cell body.

myelin sheath - ANSWERSTo increase the rate of transmission of nervous impulses,
the axon is insulated by the

synapse - ANSWERSA chemical reaction permits the travel of impulses from the
dendrite to the next axon at the

reflux arc - ANSWERSWhat consists of the travel of an impulse from a peripheral
receptor to the peripheral effectors.

motor or efferent neurons - ANSWERSThe neurons that carry the impulse to the
skeletal muscle to cause movement are called the

cortex - ANSWERSThe thin layer of gray matter where nerve cell bodies are
concentrated is the _______ of the cerebrum.

cerebrum - ANSWERSThe two hemispheres are called the

,gyri and sulci - ANSWERSHigh elevated convolutions on the surface of the cerebrum
are the_____ and the shallow grooves are the _____

White - ANSWERSWhat matter is the inner area of the cerebrum consisting of nerve
fiber tracts.

sensory; motor - ANSWERSThe cerebral cortex is responsible for receiving ________
information from the body and for triggering impulses to control ________activity.

Visual - ANSWERSWhat impulses are transmitted to the posterior portion of the brain.

opposite - ANSWERSStimulation on one side of the cerebral cortex causes contraction
of muscle on the _______ side of the
body.

corpus callosum - ANSWERSWhat connects the two cerebral hemispheres by a mass
of white matter.

brainstem - ANSWERSWhat is composed of the midbrain, the pons, and the medulla.

cerebellum - ANSWERSThe coordination of muscle groups by the _______ helps
maintain equilibrium and posture.

Meninges - ANSWERSthree protective membranes that surround the brain and spinal
cord

falx cerebri - ANSWERSseparates the two cerebral hemispheres

falx cerebelli - ANSWERSseparates the two cerebellar hemispheres

tentorium cerebelli - ANSWERSseparates cerebrum from cerebellum

cranial bones or skull - ANSWERSThe outer protective covering of the brain is the

pia mater; arachnoid membrane; dura mater - ANSWERSThe three meningeal layers,
from the innermost to the outer layer, are the

aqueduct of Sylvius - ANSWERSThe third and fourth ventricles are connected by the

foramen of Monro - ANSWERSThe superior portion of the third ventricle, which
connects the lateral ventricles, is known as the

lateral ventricles and the roofs of the third and fourth ventricles. - ANSWERSThe
choroid plexus is located in the

, tentorium cerebelli - ANSWERSWhat is a tentlike covering over the cerebellum that
separates it from the occipital lobe of the cerebrum.

thalamus - ANSWERSWhat is a relay station that receives and processes sensory
information.

central nervous system and the peripheral nervous system - ANSWERSThe two
divisions of the nervous system are the

third ventricle; thalamus; hypothalamus - ANSWERSThe three structures found in the
diencephalon are the

meningitis - ANSWERSAcute inflammation of the meninges (pia mater and arachnoid)
is

Bacterial Meningitis - ANSWERSinflammation of the protective membranes covering the
brain and spinal cord caused by various types of bacteria; most common form
meningitis

viral meningitis - ANSWERSMumps, polio, and possibly herpes simplex cause

encephalitis - ANSWERSMild headaches and fever to more severe cerebral
dysfunction, seizures, and a coma may result from the viral infection of the brain called

(Bacterial)
Haemophilus influenzae, pneumococci and meningococci - ANSWERSThe most
common form of meningitis is caused by

brain abscess - ANSWERSAn area with poorly defined borders and a mass effect
reflecting vascular congestion and edema represent the earliest signs of a(n) _______
_______ on computed tomography (CT) and magnetic resonance imaging (MRI).

MRI - ANSWERSWhat is the procedure of choice to demonstrate a crescentic or
lentiform extraaxial fluid collection
adjacent to the skull border.

brain abscess - ANSWERSring enhanced lesion

osteomyelitis of the skull - ANSWERS-most commonly caused by a supperative
process from the sinuses, mastoid air cells, or scalp; appears as diffuse areas of
destruction

depressed fracture - ANSWERSA stellate fracture has multiple fracture lines radiating
outward from a central point, is usually found in the skull, and is also known as a