Nervous System Lesson 2

Nervous System Lesson 2

by Randy Carpenter

Multiple Choice

What is the role of an astrocyte?

• Lump neurons close together.

• Provide a protective sheath to help insulate them.

• Anchor neurons close to capilaries so they receive the proper nutrients.

• Allow neurons to move away from certain areas of the body.

Multiple Choice

Which type of cell is categorized as phagocytes and helps protect and defend the CNS by getting rid of debris and bacteria?

• Oligodendrocyte

• Microglia

• Astrocyte

• Ependymal Cell

Multiple Choice

Which type of cell uses cilia to move cerebrospinal fluid around the brain and spinal cord and also forms a protective cushioning around the CNS?

• Oligodendrocyte

• Microglia

• Astrocyte

• Ependymal Cell

Multiple Choice

Which type of cell forms a myelin sheath around cells that help insulate for better cellular communication?

• Oligodendrocyte

• Microglia

• Astrocyte

• Ependymal Cell

Multiple Choice

Which cells of the PNS are similar to the oligodendrocytes in the CNS.

• Satelite Cells

• Schwann Cells

Multiple Choice

True or False: Glial cells can transmit electiral impulses around the nervous system.

• True

• False

Open Ended

Neurons do not have centrioles in their cell bodies. The text states that this is because they are amitotic. What does this mean for neurons?

Multiple Choice

Nissl substance and neurofibrils are important as they help neurons...

• Absorbe nutrients.

• Conduct electrical impulses.

• Maintain cell shape and structure.

• Increase efficinecy

Multiple Choice

What part of the neuron is the long middle piece?

• Cell body

• Dendrites

• Axon

• Synapse

Multiple Choice

What part of the neuron is where two neurons touch and electrical signals can travel via neurotransmitters across a gap?

• Cell body

• Dendrites

• Axon

• Synapse

Multiple Choice

A synapse will connect an axon terminal (end of an axon) to the ______ of another neuron. 

• Cell body

• Dendrites

• Axon

• Synapse

Multiple Choice

Nuclei are...

• Clusters of cell bodies in the CNS.

• Bundles of nerve fibers that run through the CNS.

• Small collections of cell bodies in the PNS.

• Bundles of nerve fibers that run through the PNS.

Multiple Choice

Ganglia are...

• Clusters of cell bodies in the CNS.

• Bundles of nerve fibers that run through the CNS.

• Small collections of cell bodies in the PNS.

• Bundles of nerve fibers that run through the PNS.

Multiple Choice

Tracts are...

• Clusters of cell bodies in the CNS.

• Bundles of nerve fibers that run through the CNS.

• Small collections of cell bodies in the PNS.

• Bundles of nerve fibers that run through the PNS.

Multiple Choice

Nerves are...

• Clusters of cell bodies in the CNS.

• Bundles of nerve fibers that run through the CNS.

• Small collections of cell bodies in the PNS.

• Bundles of nerve fibers that run through the PNS.

Open Ended

Exit Ticket: Differentiate between neurons in the CNS and PNS. How are the glial cells different and similar?  How are bundles of neurons and their fibers named?