18 Questions
What is the primary function of the myelin sheath in the nervous system?
To insulate axons and increase the speed of nerve impulse conduction
Which type of neuroglia is responsible for producing myelin in the CNS?
Oligodendrocytes
What percentage of the myelin sheath is composed of lipids?
70%
What is the role of Satellite cells in the PNS?
To surround the cell bodies of neurons in sensory and autonomic ganglia
What is the function of myelin basic protein in the myelin sheath?
To play a part in the structure of myelin
What is the term for the process of forming the myelin sheath around axons?
Myelination
What is the primary function of the myelin sheath in nerve transmission?
To insulate and increase the speed of nerve impulses
What type of cell is responsible for myelination in the peripheral nervous system (PNS)?
Schwann cells
What is the primary function of Microglial Cells in the brain?
Phagocytizing foreign substances and removing dead cells
What is the term for the process of rapid transmission of nerve impulses between nodes of Ranvier?
Saltatory conduction
Which type of astrocytes is found in the gray matter and has many short branching processes?
Protoplasmic astrocytes
What is the primary function of oligodendrocytes in the central nervous system (CNS)?
To form myelin sheaths around axons
What is the primary function of Oligodendrocytes in the Central Nervous System (CNS)?
Forming and maintaining the myelin sheath around axons
What is the function of Ependymal Cells in the brain?
Forming a barrier between cerebral spinal fluid and the interstitial fluid
What is the term for the process by which myelin sheaths are compacted and formed around axons?
Myelin compaction
What is the primary function of dendrites in neurons?
To receive signals from other neurons
What is the function of Fibrous astrocytes in the brain?
Found in white matter and have many long unbranched processes
What do astrocytes help to regulate in the brain?
All of the above
Test your knowledge on astrocytes, the most numerous type of neuroglia, including their structure, types, and functions in the nervous system.
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