Nervous tissue is one of four major classes of tissues. It is specialized tissue found in the central nervous system and the peripheral nervous system. It consists of neurons and supporting cells called neuroglia. The nervous system is responsible for the control of the body and the communication among its parts.
What are the features of nervous tissue?
Nervous tissue contains two categories of cells — neurons and neuroglia. Neurons are highly specialized nerve cells that generate and conduct nerve impulses. Neuroglia are supporting cells that provide physical sport, remove debris, and provide electrical insulation.
What is the definition of nervous tissue?
Nervous tissue is found in the brain, spinal cord, and nerves. It is responsible for coordinating and controlling many body activities. … Nervous tissue also includes cells that do not transmit impulses, but instead support the activities of the neurons.
What is unique about nervous tissue?
Nervous tissue is made up of cells called neurons and neuroglia. Each cell type has unique characteristics. Neurons are specialized to generate and conduct electrical activity, and neuroglia provide structural support to the neurons. … The cell body contains the nucleus, which serves as the metabolic center for the cell.
What are the main features of a nerve cell?
Nervous system cells are called neurons. They have three distinct parts, including a cell body, axon, and dendrites. These parts help them to send and receive chemical and electrical signals.
How do you identify nervous tissue?
Many have dendrites and axon terminals that are too thin and small too see clearly. Cell bodies tend to come in all sorts of sizes and shapes, and are not always bulbous lumps readily distinguished from the rest of the cell. What’s more, nervous tissue is delicate and fragile.
Where is nervous tissue not found?
Tendon is a fibrous connective tissue connecting bones to muscles. Nervous tissue is absent in tendon. These are made up of collagen. Tendons and muscles work together to move bones.
What is nervous tissue and its types?
Structure. Nervous tissue is composed of neurons, also called nerve cells, and neuroglial cells. Four types of neuroglia found in the CNS are astrocytes, microglial cells, ependymal cells, and oligodendrocytes. Two types of neuroglia found in the PNS are satellite cells and Schwann cells.
What are the 3 types of nervous tissue?
Your nervous system is involved in everything your body does, from regulating your breathing to controlling your muscles to sensing heat and cold. There are three types of nerves in your body: autonomic nerves, motor nerves, and sensory nerves.
What are the four tissues organized into?
Although there are many types of cells in the human body, they are organized into four broad categories of tissues: epithelial, connective, muscle, and nervous.
What are 5 interesting facts about the nervous system?
11 Fun Facts About the Nervous System
- The body has billions of nerve cells. …
- Neurons are made of three parts. …
- Neurons may look different from one another. …
- Neurons are programmed to do different things. …
- There are two parts of the nervous system. …
- There are two types of nervous systems. …
- The involuntary system is broken down into three parts.
5 авг. 2019 г.
How are the nervous tissue protected?
The brain is covered by three protective layers called meninges. The space between the meninges is filled with a fluid called cerebrospinal fluid. This fluid protects the brain against shocks and mechanical injuries. This fluid also maintains a constant pressure in and around the brain.
What are the two types of nervous tissue cells?
Although the nervous system is very complex, there are only two main types of cells in nerve tissue. The actual nerve cell is the neuron. It is the “conducting” cell that transmits impulses and the structural unit of the nervous system. The other type of cell is neuroglia, or glial, cell.
What is the main function of neuron?
The neuron is the basic working unit of the brain, a specialized cell designed to transmit information to other nerve cells, muscle, or gland cells. Neurons are cells within the nervous system that transmit information to other nerve cells, muscle, or gland cells.
Where is nerve cell found in our body?
The target cells of neurons include other nerve cells in the brain, spinal cord, and autonomic ganglia, and the cells of muscles and glands throughout the body.
What is the function of the nervous cell?
Neurons (also known as neurones, nerve cells and nerve fibers) are electrically excitable cells in the nervous system that function to process and transmit information. In vertebrate animals, neurons are the core components of the brain, spinal cord and peripheral nerves.