Which Neuroglial cells are phagocytic cell?
Glial cells are receiving much attention since they have been recognized as important regulators of many aspects of brain function and disease. Recent evidence has revealed that two different glial cells, astrocytes and microglia, control synapse elimination under normal and pathological conditions via phagocytosis.
What are the four types of phagocytic cells?
The main types of phagocytes are monocytes, macrophages, neutrophils, tissue dendritic cells, and mast cells.
What are the two major types of phagocytic cells?
Specialised phagocytic cells are divided into two main types: the macrophages, scattered through all the major compartments of the body (see Chapter 4) and the circulating neutrophils.
What cell is a CNS phagocyte?
As the primary resident phagocytes of the CNS, microglia play an important role in preventing the accumulation of this toxic protein through both phagocytosis and the production of degrading intra- and extracellular enzymes (149).
What cells form the myelin sheath?
Schwann cells make myelin in the peripheral nervous system (PNS: nerves) and oligodendrocytes in the central nervous system (CNS: brain and spinal cord). In the PNS, one Schwann cell forms a single myelin sheath (Figure 1A).
What are two parts of nervous system?
The nervous system is made up of the central nervous system and the peripheral nervous system:
- The brain and the spinal cord are the central nervous system.
- The nerves that go through the whole body make up the peripheral nervous system.
Are microglia in the CNS or PNS?
Whereas microglia are recognized as fundamental players in central nervous system (CNS) development and function, much less is known about macrophages of the peripheral nervous system (PNS).
What are the major phagocytic cells?
Phagocytes are the major innate immune cells act as the first line of defense against microorganisms. The important phagocytes are monocytes and macrophages, neutrophils, eosinophils, basophils, mast cells, and dendritic cells.
What are the subtypes of neuroglia in the CNS?
Neuroglia of the CNS 1 Astrocytes are delicate, star-shaped branching glial cells. 2 Microglial cells are small and have thorny processes that can touch the neighboring neurons. 3 Ependymal cells are another glial subtype that line the ventricles of the CNS,… 4 Oligodendrocytes are cells that have fewer processes compared to astrocytes.
How are Neuroglia similar to oligodendrocytes and astrocytes?
Neuroglia of the PNS 1 Schwann cells are similar in function to oligodendrocytes and microglial cells, providing myelination to axons in the… 2 Satellite cells are similar in function to astrocytes small cells that surround neurons in sensory, sympathetic, and… More
What kind of cells line the ventricles of the CNS?
Ependymal cells are another glial subtype that line the ventricles of the CNS to help circulate the CSF. Oligodendrocytes are cells that wrap their process tightly around the fibers producing an insulating covering called myelin sheath.
What is the role of satellite cells in the PNS?
Satellite cells play an important role in modulating the PNS following injury and inflammation. These resemble the astrocytes of the CNS and assist in regulating the external chemical environment.