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Nervous Tissue in animals - Tissues - Class 9 - Science Video Lecture
FAQs on Nervous Tissue in animals - Tissues - Class 9 - Science Video Lecture
| 1. What is nervous tissue in animals? |  |
Ans. Nervous tissue in animals is a specialized type of tissue that is responsible for transmitting and receiving electrical signals in the body. It forms the central nervous system (brain and spinal cord) and the peripheral nervous system (nerves throughout the body).
| 2. What are the main functions of nervous tissue in animals? | |
Ans. The main functions of nervous tissue in animals include coordination of body activities, processing and interpretation of information, regulation of bodily functions, and response to stimuli. It allows animals to sense their environment, make decisions, and carry out various activities.
| 3. How is nervous tissue structured in animals? | |
Ans. Nervous tissue in animals is composed of two main types of cells: neurons and neuroglial cells. Neurons are the functional units of the nervous system and are responsible for transmitting electrical signals. Neuroglial cells provide support, nourishment, and protection to neurons.
| 4. What are the different types of neurons found in nervous tissue? | |
Ans. There are three main types of neurons found in nervous tissue: sensory neurons, motor neurons, and interneurons. Sensory neurons transmit signals from sensory receptors to the central nervous system, motor neurons transmit signals from the central nervous system to muscles and glands, and interneurons connect sensory and motor neurons within the central nervous system.
| 5. How does nervous tissue transmit electrical signals in animals? | |
Ans. Nervous tissue transmits electrical signals through a process called action potential. When a stimulus is received, the electrical charge of the neuron changes, creating an electrical impulse. This impulse travels along the neuron's axon, which is covered by a fatty substance called myelin. The myelin sheath helps to speed up the transmission of the impulse. At the end of the axon, the signal is transmitted to the next neuron or target tissue through specialized junctions called synapses.
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