How different parts of a human being work together in unison use evidence from the text to support your answer?
Nervous tissues help parts of our body transmit messages—or ‘think’ and react to things that happen around us. These tissues are specialized for different functions, so they work together in unison. For instance, all the cells in the muscle tissue in your calf muscles work together so that you can walk or run.”
How do tissues work together as organs?
Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
Why do tissues team up to form organs?
They team up because cells make tissues; tissues make organs and organs work together to keep the system moving to keep the organism alive, so they team up to help us stay alive.
What can you conclude about tissues?
Conclusion. Tissues are communities of cells that have functions beyond what any single cell type could accomplish. Healthy tissues require the proper mix of cells, and the cells within them must be oriented correctly and dividing at an appropriate rate.
What body parts are tissue?
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).
Which tissue is responsible for the movement in our body where is the nervous tissue located in the body?
Function of Nervous Tissue The central nervous system (CNS) is composed of the brain and spinal cord, which coordinates information from all areas of the body and sends nerve impulses that control all bodily movements.
What is nervous tissue made up of?
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.
What are the characteristics of nerve cell?
Types of Neurons (Nerve Cells)
- Neurons are surrounded by a cell membrane.
- Neurons have a nucleus that contains genes.
- Neurons contain cytoplasm, mitochondria and other organelles.
- Neurons carry out basic cellular processes such as protein synthesis and energy production.
What is nervous tissue and its function Class 9?
Nervous or the nerve tissue is the main tissue of our nervous system. It monitors and regulates the functions of the body. Nervous tissue consists of two cells: nerve cells or neurons and glial cells, which helps transmit nerve impulses and also provides nutrients to neurons.
How does the nervous tissue cause action?
When a nerve impulse reaches the muscle the muscle fibre must move. Muscle cells have special proteins that change both their shape and their arrangement in the cell in response to nervous electrical impulses. When this happens new arrangements of these proteins give the muscle cells a shorter form.
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./span>
How does the action due to nervous tissue in animals is different from?
The action due to nervous tissue in animals is different from response to stimulus in plants. Explanation: There is no nervous system found in plants like animals or humans but the communication of activity is done through various generating impulses between plant cells./span>
What is the difference between an electrical impulse and a chemical impulse?
ANSWER: the main difference between both : *electrical impulse are the impulses that are transfered through the nervous,whereas chemical impulses are directly poured into the blood. *electrical impulse reach only those cells connected by nervous,whereas chemical impulse reach all the cells./span>
What are the steps of nerve impulse?
The following four steps describe the initiation of an impulse to the “resetting” of a neuron to prepare for a second stimulation:
- Action potential. Unlike a graded potential, an action potential is capable of traveling long distances.
- Refractory period.
What is nerve impulse in simple words?
A nerve impulse is an electrical phenomenon that occurs because of a difference in electrical charge across the plasma membrane of a neuron. The action potential travels rapidly down the neuron’s axon as an electric current. A nerve impulse is transmitted to another cell at either an electrical or a chemical synapse./span>
What are the functions of nerve impulse Class 11 psychology?
They receive information from sense organs or from other adjacent neurons, carry them to the central nervous system and bring motor information from the central nervous system to the motor organs . They are of many types and vary considerably in shape, size, chemical composition, and function./span>
What factors influence how fast nerve impulses travel?
The speed is affected by 3 factors:
- Temperature – The higher the temperature, the faster the speed.
- Axon diameter – The larger the diameter, the faster the speed.
- Myelin sheath – Only vertebrates have a myelin sheath surrounding their neurones.
What two factors affect impulse?
1 Answer. The two main factors are insulation by the myelin sheath and the diameter of the axon./span>
Why is myelin a poor conductor?
1. Myelin sheaths are created by two types of glia-oligodendrocytes and Schwann cells. Schwann cells wrap the axons with many membranes, which are very poor conductors of electricity because of the fact that they are mainly made up of lipids. Therefore, this membrane potential is the charge difference or voltage.
Does myelination increase resistance?
The main purpose of myelin is to increase the speed at which electrical impulses propagate along the myelinated fiber. Myelin decreases capacitance and increases electrical resistance across the axonal membrane (the axolemma).
How does the signal travel from one neuron to the next?
The place where the axon of one neuron meets the dendrite of another is called a synapse. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. Neurotransmitters bind to the membrane of the dendrite. The binding allows the nerve impulse to travel through the receiving neuron./span>