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nervous tissue ii

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Questions and Answers

Which of the following is NOT a component of nervous tissue?

Neuroglial cells

Neurons

Extracellular matrix

Muscle cells (correct)

What is the main function of neurons?

To respond to environmental changes

To alter the ionic gradient across their plasma membranes

To produce action potentials

To transmit nerve impulses (correct)

What are the three main parts of a neuron?

Cell body, dendrites, and axons (correct)

Nucleus, cytoplasm, and cell membrane

Synapses, neurotransmitters, and receptors

Myelin sheath, Schwann cells, and nodes of Ranvier

Which organelle is located only in the cell body of a neuron?

Golgi apparatus (D) Signup and view all the answers

Which type of neuron has one dendrite and one axon?

Bipolar neuron (C) Signup and view all the answers

What is the function of dendritic spines in the central nervous system (CNS)?

To receive stimuli from other neurons (A) Signup and view all the answers

What is the role of glial cells in the central nervous system (CNS)?

To support neuronal survival and activities (A) Signup and view all the answers

Which glial cells are the predominant cells in the white matter of the CNS?

Oligodendrocytes (A) Signup and view all the answers

Which glial cells have long radiating, branching processes and can be classified into two types, fibrous and protoplasmic?

Astrocytes (B) Signup and view all the answers

Which glial cells extend processes that associate with or cover synapses, affecting the formation, function, and plasticity of these structures?

Astrocytes (C) Signup and view all the answers

Which glial cells form myelin sheaths in the peripheral nervous system (PNS)?

Schwann cells (B) Signup and view all the answers

Study Notes

Nervous Tissue Components

Nervous tissue consists of various components, but one thing it does not have is __________ (answer not provided).

Neurons

The main function of neurons is to transmit and process information.
A neuron consists of three main parts: dendrites, cell body, and axon.
The cell body of a neuron contains the organelle called Nissl bodies (or chromatophilic substance).

Unipolar Neurons

Unipolar neurons have one dendrite and one axon.

Dendritic Spines

Dendritic spines in the central nervous system (CNS) function to increase the surface area for synaptic transmission.

Glial Cells

Glial cells in the central nervous system (CNS) provide support, protection, and maintenance functions for neurons.
Oligodendrocytes are the predominant cells in the white matter of the CNS.
Astrocytes have long radiating, branching processes and can be classified into two types, fibrous and protoplasmic.
Astrocytes also extend processes that associate with or cover synapses, affecting the formation, function, and plasticity of these structures.

Myelin Sheath Formation

In the peripheral nervous system (PNS), Schwann cells form myelin sheaths.

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Description

Test your knowledge of basic and systematic nervous tissue in this ANAT2241 Histology quiz. Explore topics such as the structure and function of the nervous system, as well as histological features. Recommended resources for further reading are provided.