Class 9 Biology Tissues. Nervous Tissue. NERVOUS TISSUE. The cells of nervous tissue are highly specialized and the cells of this tissue are called nerve cells or neurons. Nervous tissue stimulates and transmits the stimulus very rapidly from one place to another within the body.
What is the nervous tissue?
Nervous tissue is found in the brain, spinal cord, and nerves. It is responsible for coordinating and controlling many body activities. … The cells in nervous tissue that generate and conduct impulses are called neurons or nerve cells. These cells have three principal parts: the dendrites, the cell body, and one axon.
What is nervous tissue with diagram?
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 is Neuron class9?
Neurons are the building blocks of the nervous system. They receive and transmit signals to different parts of the body. This is carried out in both physical and electrical forms.
What is nervous system answer?
The nervous system is a body system which sends signals around the body. It lets animals respond to what is around them. The central nervous system is the brain, the spinal cord, and nerves. … The brain has billions of nerve cells to help think, walk, and breathe.
What is tissue give example?
Group cells performing a specific function is known as tissue. They help to perform all functions in body. Some examples are- Muscular tissue, Connective tissue and Nervous tissue…
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?
There are three types of nerves in your body: autonomic nerves, motor nerves, and sensory nerves. SOURCES: National Institute of Neurological Disorders and Stroke: “NINDS Peripheral Neuropathy Information Page.” Neuropathy Association: “About Peripheral Neuropathy: Facts.”
What are the four types of tissues?
There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).
Where is nervous tissue not found?
Solution : Tendons are the connective tissue, which join skeletal muscels to bones, hence nervous tissue is absent is them .
What are the 5 main parts of a neuron?
The structure of a neuron: The above image shows the basic structural components of an average neuron, including the dendrite, cell body, nucleus, Node of Ranvier, myelin sheath, Schwann cell, and axon terminal.
What are the two types of neuron?
For the spinal cord though, we can say that there are three types of neurons: sensory, motor, and interneurons.
- Sensory neurons. …
- Motor neurons. …
- Interneurons. …
- Neurons in the brain.
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What are the 8 parts of a neuron?
Terms in this set (8)
- Dendrites. Receives information from another neurons Axon Terminal through the Synapse. …
- Cell Body/Soma. Receives message from Dendrites. …
- Axon. Receives message from Cell Body/Soma. …
- Axon Terminal. Receives message from Axon. …
- Myelin Sheath. …
- Node of Ranvier. …
- Nucleus. …
What are the 3 functions of nervous system?
The nervous system has three broad functions: sensory input, information processing, and motor output. In the PNS, sensory receptor neurons respond to physical stimuli in our environment, like touch or temperature, and send signals that inform the CNS of the state of the body and the external environment.
What is nervous system of human body?
The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. It is essentially the body’s electrical wiring. Structurally, the nervous system has two components: the central nervous system and the peripheral nervous system.
What are the 3 major organs of the nervous system?
The nervous system in a human is made of the brain, spinal cord, sensory organs and all the neurons that serve as communication channels between the various organs of the body.