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Questions and Answers
What is the structural and functional unit of the nervous system?
What is the structural and functional unit of the nervous system?
- Neuroglia
- Ependymal cell
- Neuron (correct)
- Nerve cell
Which cells are considered only supportive cells in the nervous tissue?
Which cells are considered only supportive cells in the nervous tissue?
- Neurons (correct)
- Astrocytes
- Ependymal cells
- Oligodendrocytes
What type of neurons carry information toward the nervous system?
What type of neurons carry information toward the nervous system?
- Efferent neurons
- Sensory neurons (correct)
- Interneurons
- Motor neurons
What is another name for the cell body of a neuron?
What is another name for the cell body of a neuron?
What is the lightly stained form of the nucleus in a neuron called?
What is the lightly stained form of the nucleus in a neuron called?
Neuroglia are the structural and functional unit of the nervous system.
Neuroglia are the structural and functional unit of the nervous system.
Neurons can divide due to the presence of centrioles.
Neurons can divide due to the presence of centrioles.
The cell body of a neuron is also known as perikaryon.
The cell body of a neuron is also known as perikaryon.
Schwann cells are only found in the central nervous system.
Schwann cells are only found in the central nervous system.
Nissl bodies are basophilic cytoplasmic material found in the cytoplasm of neurons.
Nissl bodies are basophilic cytoplasmic material found in the cytoplasm of neurons.
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Study Notes
Structural and Functional Units
- Neurons are the primary structural and functional units of the nervous system.
- Neuroglia, or glial cells, primarily serve supportive roles in nervous tissue.
Types of Neurons
- Afferent neurons carry information toward the central nervous system.
Neuron Anatomy
- The cell body of a neuron, known as the perikaryon, contains the nucleus and organelles.
- Nissl bodies, composed of rough endoplasmic reticulum, are basophilic cytoplasmic materials present in the cell bodies of neurons.
Cell Division and Supportive Cells
- Neurons typically do not divide due to the lack of centrioles, which are necessary for cell division.
- Schwann cells provide support for peripheral nerves, while oligodendrocytes support the central nervous system.
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