SCI 250 Week 7 Nervous System Lab and Quiz

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SCI 250 Week 7 Nervous System Lab and
Quiz

Complete the
Nervous System Lab.

Complete the
open-book quiz about the nervous system and associated diseases. The quiz will
be provided by your instructor.

Nervous System Lab – Week Seven



Introduction



The nervous system has two components: the
central nervous system, which consists of the brain and spinal chord; and the
peripheral nervous system, which is composed of nerves. As you learn about the
various diseases that affect the nervous system, it is important for you to
understand the structures that can be affected by disease. Complete this lab to
become familiar with a healthy system and to identify diseases related to the brain, spinal chord, and nerves.



PART ONE: basic
functions



Provide brief answers
to the following questions to help you get acquainted with the basic functions
of a healthy nervous system. Refer to Ch. 24 in Microbiology: Principles and Explorations.

 

1.    
How do the meninges and cerebrospinal fluid
(CSF) function together in a healthy nervous system; what are their roles?

2.    
What is the blood-brain barrier?  

3.    
What normal microflora reside in the nervous
system?



PART two: basic
structures



Visit
Chapter 24 of Microbiology: Principles
and Explorations
in WileyPlus to
view an in-depth presentation of a healthy nervous system by completing the
following steps:

 

·      Select the Chapter 24
WileyPlus reading link located on your student Web page.

·      Locate the heading Chapter Review.

·      Select the Anatomy Overview: The Nervous System link.

·      Complete this lab as you
explore the Nervous System multimedia piece.

 

Nervous System: The
Brain


 

Roll
over each component of the Nervous System multimedia piece. Click on the brain. Refer to the Brain component
of the multimedia piece to label the structures in the following diagram of a
healthy brain.




 

Nervous System: The
Spinal Cord


 

Click
the icon in the upper left corner of the Brain diagram to return to the main
menu in the Nervous System multimedia piece. Click the Spinal Cord component to navigate to the Spinal Cord diagram. Refer to the Spinal Cord diagram of the multimedia piece to
label the following structures of a healthy spinal cord.



 



PART three:
investigate and apply



Several
different pathogenic bacteria can cause bacterial meningitis, an infection and
inflammation of the meninges. Select any form of bacterial meningitis discussed
in Ch. 24 of Microbiology: Principles and
Explorations
, and answer the following:

                                                       

1.    
Which form of bacterial meningitis did you
select and what is its causal agent?

2.    
What symptoms are typical of this form of
meningitis?

3.      
Which age group or population is most susceptible
to this form of meningitis and do typical activities within that age group have
any influence on a person contracting the disease?

 

SCI250 Week 7 Chapter 24 Nervous
System Quiz each question worth .25 point (10
questions x .25 point per question = total 2.5
points


10/10 Correct








Section:
Multiple Choice


 

1.    
Which
of the following is associated with serious infection of the meninges?


  • Clogging
    of blood vessels

  • Increased
    pressure within the skull

  • Decreased
    cerebrospinal fluid flow

  • Impaired
    central nervous system function

  • All
    of the above



2.    
Which
of the following is a common cause of meningitis in non-immunized young
children?


  • Streptococcus
    pneumoniae

  • Escherichia
    coli

  • Staphylococcus

  • Haemophilus
    influenzae

  • None
    of the above



3.    
Which
of the following bacteria that may cause meningitis is Gram positive and
therefore does not cause endotoxin shock in infected individuals?


  • Escherichia
    coli

  • Neisseria
    meningitidis

  • Listeria
    monocytogenes

  • Haemophilus
    influenzae

  • None
    of the above



4.    
An
immunofluorescent antibody test (IFAT) has replaced the older test for the
presence of inclusions in neurons (Negri bodies) for the detection of
infections caused by ________


  • Neisseria
    meningitides.

  • Enteroviruses.

  • Mumps
    virus.

  • Rabies
    virus.

  • Haemophilus
    influenzae.



5.    
What
viruses most likely cause encephalitis?


  • Togaviruses

  • Enteroviruses

  • Mumps
    virus

  • Rabies
    virus

  • Hepatitis
    viruses



 

6.    
What
is the only bacterium known to damage peripheral nerves?


  • Naegleria
    fowleri

  • Mycobacterium
    leprae

  • Streptococcus
    pneumoniae

  • Neisseria
    meningitidis

  • Haemophilus
    influenzae



7.    
Preventing
African sleeping sickness is nearly impossible because ________


  • the
    trypanosomes change their surface glycoproteins evading the host immune
    response.

  • the
    tsetse fly has a wide range and eradication is difficult.

  • vaccines
    must target many antigens.

  • All
    of the above

  • A
    and B



8.    
A
major difference between infections with prions and other agents is that
infections with prions:


  • Do
    not lead to an inflammatory response

  • Are
    not transmissible

  • Do
    not cause an increase in the size of astrocytes

  • Are
    not fatal

  • All
    of the above



9.    
Invades
nerves and brain; headache, fever, nausea, partial paralysis, coma, and death
ensue unless patient has immunity


  • Bacterial
    meningitis

  • Listeriosis

  • Rabies

  • Encephalitis

  • Hansen's
    disease

  • Tetanus

  • Botulism

  • Pliomyelitis

  • Transmissable
    spongiform encephalopathies

  • Chagas'
    disease



 

10. 
Shrinkage
and lysis of neurons of the central nervous system; headache, fever, and
sometimes brain necrosis and convulsions


  • Bacterial
    meningitis

  • Listeriosis

  • Rabies

  • Encephalitis

  • Hansen's
    disease

  • Tetanus

  • Botulism

  • Poliomyelitis

  • Transmissable
    spongiform encephalopathies

  • Chagas'
    disease



 
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