QUIZ 2

Which of the following is associated with the PNS but not the CNS?

• dendrite

• myelin sheath

• Schwann cells

• node of Ranvier

Which of the following parts of a neuron is correctly matched?

• dendrite-contains the nucleus and other organelles

• axon-conducts nerve impulses

• cell body-short extensions that receive impulses

• axon-contains the nucleus and other organelles

• dendrite-conducts nerve impulses

Which one of the following is entirely located within the central nervous system?

• sensory neuron

• motor neuron

• interneuron

• effector

• sensory receptor

The brain and spinal cord are organs of the

• Sympathetic nervous system

• Parasympathetic nervous system

• Peripheral nervous system

• Autonomic nervous system

• Central nervous system

Information transfer within a neuron is ________________________; Information transfer between neurons is  ________________________.

• electrical; chemical

• chemical; chemical

• chemical; electrical

• electrical; electrical

The arrival of an action potential at an axon terminal will cause calcium levels inside the axon terminal to:

• Decrease

• Increase

• stay the same

What is the function of a myelin sheath?

• All choices are correct.

• increasing rate of impulse conduction along axon

• insulation of long axons

• regeneration of cut axons

Which type of glia provides structural support to the neuron and provides nourishment to the neuron?

• Microglia

•  

  Ependymal cell

• Oligodendrocyte

•  

  Schwann cell

• Astrocyte

The spinal cord belongs to the

•  

  central nervous system.

  
  

•  

  none of these.

  
  

•  

  peripheral nervous system.

  
  

•  

  appendicular nervous system.

  
  

•  

  axial nervous system.

  
  

Which part of the brain has noticeable gyri and sulci that increase surface area for cortical gray matter?

• pons

• left and right hemispheres

  
  

• brainstem

•  

  diencephalon