Nervous System Quiz

What are the three principal functions of the nervous system?

• Sensory input, integration, and motor output

• Sensory input, digestion, and motor output

• Integration, digestion, and motor output

• Sensory input, integration, and digestion

What is the main control center of the nervous system?

• Central nervous system

• Somatic nervous system

• Peripheral nervous system

• Autonomic nervous system

Which cells are the most abundant and versatile glial cells in the central nervous system?

• Microglial cells

• Ependymal cells

• Astrocytes

• Oligodendrocytes

What do Schwann cells do in the peripheral nervous system?

• Anchor neurons to their blood supply

• Wrap around axons and make the myelin sheath

• Act as the main source of immune defense

• Create cerebrospinal fluid

What type of neurons are mostly found in sensory receptors?

• Unipolar neurons

• Bipolar neurons

• Multipolar neurons

• Interneurons

Which division of the autonomic nervous system relaxes the body?

• Parasympathetic division

• Somatic division

• Motor division

• Sympathetic division

What is the function of the dendrites in a neuron?

• Transmit electrical impulses away from the cell body

• Pick up messages and convey information to the cell body

• Wrap around neurons producing an insulating barrier

• Create, secrete, and circulate cerebrospinal fluid

What percentage of the brain's mass is made up of glial cells?

• 75%

• 10%

• 25%

• 50%

Which type of neurons transmit impulses away from the central nervous system to muscles and glands?

• Bipolar neurons

• Interneurons

• Motor neurons

• Sensory neurons

What is the role of the ependymal cells in the central nervous system?

• Create, secrete, and circulate cerebrospinal fluid

• Act as the main source of immune defense

• Anchor neurons to their blood supply

• Wrap around neurons producing an insulating barrier