What are the four types of cells in the nervous system?
The four types of neuroglia found in the central nervous system are astrocytes, microglial cells, ependymal cells, and oligodendrocytes. The two types of neuroglia found in the peripheral nervous system are satellite cells and Schwann cells. Neurons are the other the other type of cell that comprise nervous tissue.
What are the main cells in the nervous system?
Main. The central nervous system (CNS) is now thought to consist of three main cell types: neurons, glial cells and vascular cells.
What is the classification of nerve?
Nerves can be categorized as afferent, efferent, and mixed based on the direction of signal transmission within the nervous system. Nerves can be further categorized as spinal nerves or cranial nerves based on where they connect to the central nervous system.
How many types of nervous system are there?
The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
What are two types of nervous system?
The nervous system has two main parts:
- The central nervous system is made up of the brain and spinal cord.
- The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
What are two types of nervous system cells?
There are two broad classes of cells in the nervous system: neurons, which process information, and glia, which provide the neurons with mechanical and metabolic support. Three general categories of neurons are commonly recognized (Peters, Palay, & Webster, 1976).
What are the three classifications of nerves?
There are three types of peripheral nerves: motor, sensory and autonomic. Some neuropathies affect all three types of nerves, while others involve only one or two.
What are the 3 types of nerve fibers?
Nerve fibers are classed into three types – group A nerve fibers, group B nerve fibers, and group C nerve fibers. Groups A and B are myelinated, and group C are unmyelinated. These groups include both sensory fibers and motor fibers.
What are the 2 types of nervous systems?
What kind of cells are in the nervous system?
All nervous tissue, from the brain to the spinal cord to the furthest nerve branch, includes cells called neurons. Neurons are charged cells: they conduct electrical signals to pass information through the body. A typical neuron consists of a cell body, dendrites, and an axon with an axon terminal.
Which is a functional unit of the nervous system?
Neurons, or nerve cell, are the main structural and functional units of the nervous system. Every neuron consists of a body (soma) and a number of processes (neurites). The nerve cell body contains the cellular organelles and is where neural impulses ( action potentials) are generated.
How are the different types of neurons classified?
Types of Neurons by Shapes Classification of Neurons (Source: Wikimedia) Based on shapes, neurons are classified into five types namely Unipolar neurons, Bipolar neurons, Pseudounipolar neurons, Anaxonic neurons, and Multipolar neurons. 1.
What are the two divisions of the nervous system?
The nervous system consists of two divisions; Central nervous system (CNS) is the integration and command center of the body Peripheral nervous system (PNS) represents the conduit between the CNS and the body. It is further subdivided into the somatic nervous system (SNS) and the autonomic nervous system (ANS).