File Name: types of glial cells and their functions ppt to .zip
Copy embed code:. Automatically changes to Flash or non-Flash embed. WordPress Embed Customize Embed. URL: Copy. Presentation Description No description available. By: alizeybaloch 93 month s ago. ThanK yOu Ma'am. Neuroglial cells Non-excitable cells. Sense when neurons release glutamate Extract blood sugar from capillaries for energy Take up and release ions in order to control environment around neurons Involved in synapse formation in developing neural tissue Produce molecules necessary for neuronal growth Astrocytes: Astrocytes Neuroglia in the CNS: Neuroglia in the CNS 2.
Schwann cells neurolemmocytes — surround axons in the PNS. Brain also control: muscle movements interpretation of sensory information sight, sound, touch, taste, pain etc Symptoms: Symptoms Tumors can effect any part of the brain. Follow us on:. Go to Application. US Go Premium. PowerPoint Templates. Upload from Desktop Single File Upload. CNS-1 Neuron and neuroglial cells husanbano. Post to :. URL :. Related Presentations :. Add to Channel. The presentation is successfully added In Your Favorites.
Views: Category: Education. Like it 1. Dislike it 0. Added: July 02, Posting comment Post Reply Close. Edit Comment Close. Premium member. Presentation Transcript. Learning Objectives: Learning Objectives At the end of lecture, you should be able to: Describe the nervous tissue Differentiate nervous tissue and neuroglia cell Enlist types of neurons according to structure Enlist types of neuroglial cells according to structure.
Do not generate action potential is the supporting tissue that is times mo re abundant in mammalian brain than neurons Present in CNS. Its Processes. Characteristics of neuroglial cells: Characteristics of neuroglial cells Much smaller than neurons and more numerous 10 : 1 Make up half the mass of the brain Do not generate and propagate action potentials.
Characterstics of neuroglial cells: Characterstics of neuroglial cells They can replace themselves They have branching processes They can divide throughout life. Sense when neurons release glutamate Extract blood sugar from capillaries for energy Take up and release ions in order to control environment around neurons Involved in synapse formation in developing neural tissue Produce molecules necessary for neuronal growth.
Microglia — smallest and least abundant glial cell Phagocytes — the macrophages of the CNS Engulf invading microorganisms and dead neurons Derive from blood cells called monocyte s.
Ependymal cells These cells Line the central cavity of the spinal cord and brain Bear cilia — help circulate the cerebrospinal. Disorder of neuroglial cells: Disorder of neuroglial cells The brain is the center of: thoughts emotions memory and speech.
Brain also control: muscle movements interpretation of sensory information sight, sound, touch, taste, pain etc. Symptoms: Symptoms Tumors can effect any part of the brain. The symptoms includes: Morning headache Confusion Difficulty with muscle movement Difficulty with coordination control Ataxia Changes in vision, hearing, and sensation Change of personality Dyshasia.
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Neuroscience in the 21st Century pp Cite as. In the human brain glial cells are as abundant as neurons. The relative number of glial cells has increased with increasing complexity of brains during evolution. In vertebrates three types of glial cells can be distinguished in the central nervous system, namely astrocytes, oligodendrocytes and microglia. In the peripheral nervous system the Schwann cell is the only glial cell type.
This colorful picture could be an abstract work of modern art. You might imagine it hanging in an art museum or art gallery. In fact, the picture illustrates real life rather than an artistic creation. It is a micrograph of human nervous tissue. The neon green structures in the picture are neurons. The neuron is one of two basic types of cells in the nervous system, the other type being the glial cell. Neurons, also called nerve cells, are electrically excitable cells that are the main functional units of the nervous system.
Neuroglia , also called glia or glial cells, are non-neuronal cells of the nervous system. They compose a rich support system that is essential to the operation of nervous tissue and the nervous system. Unlike neurons , glial cells do not have axons, dendrites, or conduct nerve impulses. Neuroglia are typically smaller than neurons and are about three times more numerous in the nervous system. Glia perform a number of functions in the nervous system , including physically supporting the brain ; assisting in nervous system development, repair, and maintenance; insulating neurons; and providing metabolic functions for neurons.
Glial cells, consisting of microglia, astrocytes, and oligodendrocyte lineage cells as their major components, constitute a large fraction of the mammalian brain. Originally considered as purely non-functional glue for neurons, decades of research have highlighted the importance as well as further functions of glial cells. Although many aspects of these cells are well characterized nowadays, the functions of the different glial populations in the brain under both physiological and pathological conditions remain, at least to a certain extent, unresolved. To tackle these important questions, a broad range of depletion approaches have been developed in which microglia, astrocytes, or oligodendrocyte lineage cells i. As the different glial populations are very heterogeneous, it is imperative to specifically ablate single cell populations instead of inducing cell death in all glial cells in general.
Glia , also called glial cells or neuroglia , are non- neuronal cells in the central nervous system brain and spinal cord and the peripheral nervous system that do not produce electrical impulses. They have four main functions: 1 to surround neurons and hold them in place; 2 to supply nutrients and oxygen to neurons; 3 to insulate one neuron from another; 4 to destroy pathogens and remove dead neurons. They also play a role in neurotransmission and synaptic connections,  and in physiological processes like breathing. Glial cells have far more cellular diversity and functions than neurons, and glial cells can respond to and manipulate neurotransmission in many ways. Additionally, they can affect both the preservation and consolidation of memories.
Major types of glial cells in the nervous system. Finally, recent work shows that microglia play a role in the developing brain. Normally, far more synapses are created than are needed, with only the strongest, most important ones surviving. They do this by controlling the levels of neurotransmitter around synapses, controlling the concentrations of important ions like potassium, and providing metabolic support.
The central nervous system consists of the brain and spinal cord. This article gives a brief overview of the central nervous system CNS. We will look at the types of cells involved, different regions within the brain, spinal circuitry, and how the CNS can be affected by disease and injury. Here are some key points about the central nervous system.
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