Neural Tissue
Composed of neurons and neuroglia, responsible for transmitting and processing information throughout the body.
What is Neural Tissue?
A specialized cell transmitting nerve impulses; a nerve cell.
Key points
- Identify the two main cell types of neural tissue.
- Describe the structure and function of a neuron.
- Explain the role of neuroglia in neural tissue.
- Understand the concept of a synapse and signal transmission.
Common exam trap
Confusing the roles of neurons and neuroglia.
Definitions
- Term
Neuron
- Meaning
A specialized cell transmitting nerve impulses; a nerve cell.
- Term
Neuroglia
- Meaning
Non-neuronal cells in the nervous system that provide structural, nutritional, and functional support to neurons.
- Term
Synapse
- Meaning
A junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter.
- Term
Axon
- Meaning
The long threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells.
- Term
Dendrite
- Meaning
A short branched extension of the cell body of a nerve cell, along which nerve impulses receive from other cells are transmitted to the cell body.
- Term
Myelin Sheath
- Meaning
An insulating layer, formed by glial cells (oligodendrocytes in CNS, Schwann cells in PNS), that surrounds the axon of many neurons, increasing the speed of nerve impulse conduction.
Learning objectives
Identify the two main cell types of neural tissue.
Describe the structure and function of a neuron.
Explain the role of neuroglia in neural tissue.
Understand the concept of a synapse and signal transmission.
Recognize the importance of myelination.
Prerequisites
Cell structure and function
Basic understanding of cell communication
Introduction to tissues
Common mistakes
Confusing the roles of neurons and neuroglia.
Misunderstanding the process of synaptic transmission.
Overlooking the importance of myelination for nerve impulse speed.
Keywords
Neuron
Neuroglia
Nerve Impulse
Synapse
Axon
Dendrite
Myelin Sheath
Central Nervous System
Peripheral Nervous System
Neurotransmitter
Practice preview
Which of the following is the basic structural and functional unit of the neural system?…
easy
Which part of a neuron is typically a long, slender projection that conducts electrical impulses away from the neuron's cell body?…
easy
What is the primary function of neuroglia cells?…
easy