Which description below does not refer to microglia? is highly responsive to infection or disease it has a phagocytic function is very dynamic growing and shrinking very rapidly its envelops several neighboring neurons
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- (Microglia) what its function ?!Match the function to the cell type. [Choose ] Microglia Schwann cell V Neuron Muscle Cell that can process information and command the body. Astrocyte Oligodendrocyte Myelinating cell in the Central Nervous System. Myelinating cell in the Peripheral Nervous System. Schwann cell Phagocytic cell with immune function. Oligodendrocyte Supportive cell in the nervous system. Can spatially buffer excess K+. AstrocyteMicroglia and Kupffer cells are two kinds of _____.
- phagocytosis is where a cell envelopes larger particles using its cellular membrane. Ture or falsedendrite cèll body axon- Q/Why this type of cell does not contain melanin c) Interneuron (multipolar)MATCHING TYPE COLOUMN A COLOUMN B This cellular region contains numerous phagocytic vacuoles and secondary lysosomes, peroxisomes Melanin granules are numerous It has nine (9) distinct layers It consists of cuboidal or low columnar cells with basal nuclei Its cells play key roles in the visual cycle of retinal regeneration It contains cell bodies and photoreceptors (rod and cone of cells) It is where the Müller cells are located It functions as an outpost of the CNS It has many tight junctions which form an important part of the protective blood-retina barrier This is where phagocytosis happens A. RETINA PIGMENTED LAYER B. RETIA NEURAL LAYER
- Monocytes are powerful phagocytes. Skeletal muscle fibers do mechanical work. Goblet secrete mucus. In each of these 3 cases, decide which cellular organelle (s) must be present in great abundance in order to accomplish the functions described and indicate how these organelles are involved.For each of the situations below discuss why the consequences are a direct result of damage or inflammation of the cell type. Ependymal Cells – Hydrocephalus (increased fluid in the brain spaces) Oligodendrocytes – weak muscles Microglia – Neurodegenerative DiseaseNeuroglia outnumber neurons in the nervous system by about 10 to 1.In addition, neuroglia retain the ability to divide, unlike most neurons.How do these two observations relate to the fact that most braincancers begin in glial cells?
- Tab. 1. Morphology of cell damage Reversible injury Swelling of endoplasmic reticulum and mitochondria Myelin figure- Breakdown of plasma membrane, organelles, and nucleus; leakage of contents Myelin figure- Inflammation Recovery Amorpous densities in mitochondria Progressive injury NORMAL Membrane blebs NECROSIS Stages of cell damage: 1. 2. Morphological manifestations of reversible cell damage: 1. 2. 3. 4. 5.Microglia 1. active immune defence in the CNS Neurons 2. stores the majority of the body's glycogen Oligodendrocyte 3. glial cells act locally to maintain normal electrolyte composition of the cerebrospinal fluid Astrocytes 4. releases of enzymes that degrade the osteoid Skeletal muscle 5. are neuroglial cells that wrap around axons in PNS, and they provide electrical fiber insulation with small gaps in between called nodes of Ranvier Chondrocyte 6. lies within the substance of fully formed bone and maintains osteoid of bone 7. contain haemoglobin that mainly carries oxygen Smooth muscle Osteocyte 8. are functional unit of the nervous system Purkinje cells 9. a cell which has secreted the matrix and become embedded in it, and the only cell found in cartilage Synoviocytes | 10. are small, fusiform cells that are linked by gap junctions have no striations as thin and thick fibers do not form sarcomere Ependymal cells 11. Macrophages of the liver Basophils 12. Cells have non-phagocytic…Define the term microglia? What is its role?