Nervous Tissue Part 2

What is the primary function of glial cells?

• To transmit electrical signals

• To form the blood-brain barrier exclusively

• To support and nourish neurons

• To act as the main component of the nervous system

Where can glial cells be found?

• Only in the central nervous system

• Outside the nervous system

• Only in the peripheral nervous system

• In both the central and peripheral nervous systems

What is the role of astrocytes?

• To create cerebrospinal fluid

• To connect neurons to blood vessels

• To act as immune cells

• To myelinate axons

Which cells are responsible for myelinating axons in the central nervous system?

• Ependymal cells

• Astrocytes

• Microglial cells

• Oligodendrocytes

What is the function of microglial cells?

• To myelinate axons

• To help in the formation of the blood-brain barrier

• To keep the tissue safe from pathogens

• To provide structural support

What is the blood-brain barrier primarily composed of?

• Microglial cells

• Astrocytes

• Neurolemmocytes

• Oligodendrocytes

What is the difference between oligodendrocytes and Schwann cells?

• Oligodendrocytes are found in the peripheral nervous system, while Schwann cells are found in the central nervous system

• Oligodendrocytes can myelinate multiple axons, while Schwann cells myelinate a single section of an axon

• There is no difference; they are the same cell type

• Schwann cells create cerebrospinal fluid, while oligodendrocytes do not

What is the main difference between a nerve and a tract?

• A nerve is a collection of axons in the central nervous system, while a tract is in the peripheral nervous system

• A tract is a collection of dendrites, while a nerve is a collection of axons

• There is no difference between a nerve and a tract

• A nerve is a collection of axons in the peripheral nervous system, while a tract is in the central nervous system

What is the role of ependymal cells?

• To act as immune cells within the central nervous system

• To create cerebrospinal fluid

• To myelinate axons in the peripheral nervous system

• To connect neurons to blood vessels

What is a synapse?

• A type of glial cell

• A protective layer around the axon

• A gap between two neurons where neurotransmitters are released

• A type of neuron