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Questions and Answers
The soma forms a cone-shaped _______ as it projects to form an axon.
The soma forms a cone-shaped _______ as it projects to form an axon.
axon or hillock
_______ are small, distal branches of an axon.
_______ are small, distal branches of an axon.
telodendria
Either Schwann cells or extensions of _______ can form myelin sheaths.
Either Schwann cells or extensions of _______ can form myelin sheaths.
oligodendrocytes
The gaps between the segments of a myelin sheath are called _______.
The gaps between the segments of a myelin sheath are called _______.
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A group of myelinated fibers may form a region of nerve tissue called _______ matter.
A group of myelinated fibers may form a region of nerve tissue called _______ matter.
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The _______ neuron connects an afferent neuron to an efferent neuron.
The _______ neuron connects an afferent neuron to an efferent neuron.
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A junction between two neurons, or between a neuron and effector, is called a(n) _______.
A junction between two neurons, or between a neuron and effector, is called a(n) _______.
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A bundle of parallel neurons encased in fibrous connective tissue is called a(n) _______ (in the PNS).
A bundle of parallel neurons encased in fibrous connective tissue is called a(n) _______ (in the PNS).
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A bundle of parallel neurons in the CNS is called a(n) _______.
A bundle of parallel neurons in the CNS is called a(n) _______.
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An action potential traveling down a myelinated axon travels _______ (faster/slower) than in an unmyelinated axon.
An action potential traveling down a myelinated axon travels _______ (faster/slower) than in an unmyelinated axon.
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Unmyelinated nerve tissue is called _______ matter.
Unmyelinated nerve tissue is called _______ matter.
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_______ neurons have exactly two projections from the cell body.
_______ neurons have exactly two projections from the cell body.
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_______ neurons have multiple dendrites and a single axon extending from the cell body.
_______ neurons have multiple dendrites and a single axon extending from the cell body.
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In _______ neurons, a single process from the cell body diverges to form two long branches--one acting as a dendrite and the other as an axon.
In _______ neurons, a single process from the cell body diverges to form two long branches--one acting as a dendrite and the other as an axon.
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Schwann cells form myelin sheaths in the _______ nervous system.
Schwann cells form myelin sheaths in the _______ nervous system.
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Oligodendrocytes form myelin sheaths in the _______ nervous system.
Oligodendrocytes form myelin sheaths in the _______ nervous system.
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Neuroglial cells called _______ cells line the fluid spaces of the brain.
Neuroglial cells called _______ cells line the fluid spaces of the brain.
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Small glial cells that phagocytize harmful matter are called _______.
Small glial cells that phagocytize harmful matter are called _______.
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_______ are ciliated neuroglia that assist the circulation of CSF.
_______ are ciliated neuroglia that assist the circulation of CSF.
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Of the two major types of cells in the nerve tissue, the _______ is the most numerous.
Of the two major types of cells in the nerve tissue, the _______ is the most numerous.
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Study Notes
Nerve Tissue Study Notes
- The axon hillock is the cone-shaped projection formed by the soma when it transitions into an axon.
- Telodendria are small branches located at the distal end of an axon.
- Oligodendrocytes or Schwann cells are responsible for creating myelin sheaths around nerve fibers.
- Nodes of Ranvier are gaps found between segments of the myelin sheath, enhancing signal transmission.
- Myelinated fibers group together to form white matter within nerve tissue.
- Interneurons, also known as association neurons, facilitate communication between afferent (sensory) and efferent (motor) neurons.
- A synapse is the connection point between two neurons or between a neuron and an effector organ.
- Nerves consist of bundles of parallel neurons surrounded by fibrous connective tissue, specifically in the peripheral nervous system (PNS).
- In the central nervous system (CNS), a grouping of parallel neurons is referred to as tracts.
- Action potentials travel faster in myelinated axons compared to unmyelinated axons, due to increased conduction efficiency.
- Unmyelinated nerve tissue is classified as gray matter.
- Bipolar neurons are characterized by having two distinct projections extending from the cell body.
- Multipolar neurons have multiple dendrites and a single axon emanating from the cell body.
- Unipolar neurons, also known as pseudounipolar neurons, have a single process that splits into two branches: one acts like a dendrite and the other functions as an axon.
- Schwann cells are responsible for forming myelin sheaths in the peripheral nervous system.
- Oligodendrocytes create myelin sheaths in the central nervous system.
- Ependymal cells are a type of neuroglial cell that line the brain's fluid spaces and assist in the circulation of cerebrospinal fluid (CSF).
- Microglia are small glial cells that perform phagocytosis to remove harmful debris in the nervous system.
- Ependymal cells are ciliated neuroglia that help circulate cerebrospinal fluid.
- Glial cells outnumber neurons and play a critical role in supporting the nervous system.
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Description
Test your knowledge on nerve tissue with this quiz. Explore key concepts such as axon hillock, myelin sheaths, and the structure of neurons. This quiz covers important aspects of both central and peripheral nervous systems.
