Question 1

Which of the following is NOT a main defense mechanism of the nervous system?

Accepted Answer

The lymphatic vessels

Question 2

A patient presents with sudden high fever, severe headache, and a stiff neck. Which diagnostic procedure is most appropriate to confirm bacterial meningitis?

Accepted Answer

Lumbar puncture to collect cerebrospinal fluid

Question 3

Which of the following statements best explains why humans are considered a 'dead-end host' for West Nile virus?

Accepted Answer

Humans do not transmit the virus further to mosquitoes or other hosts.

Question 4

A 4-month pregnant woman presents with fever and flu-like symptoms. She reports eating only soft cheeses and crackers. Which pathogen is most likely responsible for her symptoms?

Accepted Answer

Listeria monocytogenes

Question 5

Which of the following foods is most commonly associated with infant botulism?

Accepted Answer

Honey

Question 6

Which of the following best describes the mechanism by which Listeria monocytogenes evades the host immune system?

Accepted Answer

It avoids immune detection by spreading directly from cell to cell.

Question 7

A patient is bitten by a raccoon and presents with headache, disorientation, and numbness. What is the FIRST step in management?

Accepted Answer

Administer anti-rabies vaccine and anti-rabies antibodies

Question 8

Which of the following is a distinguishing feature of meningococcal meningitis compared to pneumococcal meningitis?

Accepted Answer

It often presents with a petechial pinpoint rash.

Question 9

Which of the following statements about prion diseases is TRUE?

Accepted Answer

They are transmissible and cause spongiform changes in the brain.

Question 10

Which of the following best describes the transmission cycle of West Nile virus?

Accepted Answer

It cycles between birds and mosquitoes.

Question 11

Which of the following is the causative agent of tetanus, and what is the name of its toxin?

Accepted Answer

Clostridium tetani; tetanospasmin

Question 12

Which of the following laboratory findings is most consistent with bacterial meningitis?

Accepted Answer

High pressure on lumbar puncture and low CSF glucose

Question 13

Which of the following is a key risk group for developing severe listeriosis?

Accepted Answer

Pregnant women

Question 14

Which of the following best explains why rabies is nearly always fatal once symptoms appear?

Accepted Answer

The virus causes irreversible damage to the central nervous system.

Question 15

Which of the following is the most common route of transmission for Toxoplasma gondii to humans?

Accepted Answer

Contact with cat feces or ingestion of undercooked meat

Question 16

Which of the following best describes the effect of botulinum toxin on the nervous system?

Accepted Answer

It causes flaccid paralysis by blocking acetylcholine release at neuromuscular junctions.

Question 17

Which of the following is a common sign of prion disease due to brain damage?

Accepted Answer

Loss of coordination and memory loss

Question 18

Which of the following best explains why canned foods are a risk for foodborne botulism?

Accepted Answer

Improper canning can create anaerobic conditions that allow Clostridium botulinum spores to germinate and produce toxin.

Question 19

Which of the following best describes the zoonosis of West Nile virus?

Accepted Answer

It is maintained in a cycle between birds and mosquitoes, with humans as accidental hosts.

Question 20

Which of the following statements about the treatment and prevention of variant Creutzfeldt-Jakob disease (vCJD) is correct?

Accepted Answer

There is no cure; prevention relies on avoiding exposure to contaminated tissues.

Microbiology Nervous System Infections – Study Guide Walkthrough

Study Guide - Practice Questions

Study Guide - Flashcards