Final Exam Chapter 15-20 210

Front

What is the function of the blood-brain barrier?

Back

Prohibits most microorganisms and antibiotics from entering the nervous system.

Front

Which part of the nervous system consists of the brain and spinal cord?

Back

Central nervous system (CNS).

Front

What type of bacteria is Neisseria meningitidis commonly known as?

Back

Gram-negative diplococci.

Front

What is an example of a phenotypic method for microbial identification?

Back

Observing traits expressed in appearance and behavior.

Front

Which of the following stains is most often used for direct microscopic observation?

Back

Gram stain.

Front

What is the role of the central nervous system (CNS)?

Back

To process and transmit information throughout the body.

Front

What are the two main divisions of the nervous system?

Back

Central nervous system (CNS) and peripheral nervous system (PNS).

Front

What is the primary function of neurons?

Back

To transmit electrical signals throughout the body.

Front

What is the significance of the myelin sheath?

Back

It insulates axons and increases the speed of signal transmission.

Front

What is the difference between Gram-positive and Gram-negative bacteria?

Back

Gram-positive bacteria have a thick peptidoglycan layer, while Gram-negative bacteria have a thin layer and an outer membrane.