nervous tissue quiz. exam 4

Which cells produce myelin in the brain and spinal cord?

•  

  Astrocytes

• Microglia

• Motor neurons

• Oligodendrocytes

Which of the following is an effector?

• a sense organ

• an afferent neuron

• a gland

• an interneuron

Sensory receptors

• all of the above.

• are part of the PNS.

• monitor light

• detect changes in and outside the body.

The majority of neurons are

• unipolar.

• bipolar.

• anaxonic.

• multipolar.

An action potential is the result of

• endocytosis of neurotransmitters.

• the diffusion of ions across the plasma membrane of the axon.

• the diffusion of ions across the plasma membrane in the soma.

• exocytosis of potassium ions.

Astrocytes structurally support neurons and also provide important signals and nutrients to neurons.

• True

• False

Which of the following is(are) a type of neuroglia?

• Astrocyte

• Schwann cell

• Ependymal cell

• all of the above

Which of the following is NOT true?

• Oligodendrocytes are found only in the CNS.

• The visceral motor division is further divided into sympathetic and parasympathetic divisions.

• The CNS consists of the brain, cranial nerves, and spinal cord.

• Interneurons are only found in the CNS

Every neuron has

• myelin.

• a cell body.

• a neurilemma.

• many axons.

Which of the following neuroglia is not part of the CNS

• Interneurons

• Astrocytes

• Satellite cells

• Microglia