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Nerves
Nerves are thread-like structures that form a network of pathways that transmit information from the brain to the body and the body to the brain, in the form of electrical impulses.
1,605 Questions
What is the organ system of a nerve cell?
29. always 29. this of course, is including organelles such as the nucleus, mitochondria, cytoplasm, ribosomes, smooth and rough er, Golgi complex, nucleolus, nuclear membrane, and all those other organelles that are important in any cell, except for one celled organisms. the nerve cell is an amazing specialized cell, and it is really cool looking. if you ever have time, look up a picture of one and it will make you want to do a report on it!!!!!!!!! that's what i did!!!!!!! :) :} thanks for reading my entry on how many organelles are in a nerve cell!!!!!!!!!! :D
What organs are associated with the neuron cell?
A neuron is basically associated with pretty much everything, as the neuron is in the brain and it is a nerve cell so it is what carries the electrical impulses like pain and the feeling sensation.
What is the definition of complex adaptive systems?
Complex adaptive systems are genetic algorithms which involve many components that adapt as they interact. Properties of complex adaptive systems include:
- Emergent behavior
- Adaptation
- Specialization
- Dynamic Change
- Competition
- Cooperation
- Decentralization
What is the Darien Gap and why is it dangerous to travel there?
It is a thick primary rain forest that separates the PanAmerican highway. It is plagued with fighting between drug lords and Colombian guerillas. While it is possible to visit, it is highly not recommended. There have been massacres, kidnappings, and poaching going on in this unstable region. It is a large swampland/rainforest that receives about an inch a day of rain. It is also said to be the border between the Americas that is preventing two major diseases from entering the USA. Foot and Mouth disease and screw worm would have a major impact on the cattle industries if allowed to flourish past the Gap. It is also located between the borders of Colombia and Panama.
What are the functions of the nerve?
to carry information in the brain.
It's main purpose is to transport messages from one part of the body to another in the form of nerve impulses.
Three main functions of a nerve cell is to recieve, conduct, and send impulses.
Why is nerve conduction important?
Electrical conductivity is important because we live in a world that is increasingly run by electronic devices. These devices depend on materials that are electrically conductive to send their signals and operate.
Which color does the optic nerve react fastest to?
green? yellow like cheese. http://hyperphysics.phy-astr.gsu.edu/hbase/vision/retina.html
Where are the nerve cells located?
Many nerve cells are of the basic type illustrated above. Some kind of stimulus triggers an electric discharge of the cell which is analogous to the discharge of a capacitor. This produces an electrical pulse on the order of 50-70 millivolts called an action potential. The electrical impulse propagates down the fiber-like extension of the nerve cell (the axon). The speed of transmission depends upon the size of the fiber, but is on the order of tens of meters per second - not the speed of light transmission that occurs with electrical signals on wires. Once the signal reaches the axon terminal bundle, it may be transmitted to a neighboring nerve cell with the action of a chemical neurotransmitter.
The dendrites serve as the stimulus receptors for the neuron, but they respond to a number of different types of stimuli. The neurons in the optic nerve respond to electrical stimuli sent by the cells of the retina. Other types of receptors respond to chemical neurotransmitters.
The cell body contains the necessary structures for keeping the neuron functional. That includes the nucleus, mitochondria, and other organelles. Extending from the opposite side of the cell body is the long tubular extension called the axon. Surrounding the axon is the myelin sheath, which plays an important role in the rate of electrical transmission. At the terminal end of the axon is a branched structure with ends called synaptic knobs. From this structure chemical signals can be sent to neighboring neurons.
How many tissues are there in the human body?
There are four types of tissue found in the human body. These are epithelial tissue, connective tissue, nervous tissue and muscle tissue. Percentage composition of tissue varies from person to person.
Who controls rights for Bobbs-Merrill Co?
The rights for Bobbs-Merrill Co are currently controlled by Random House, a division of Penguin Random House. Bobbs-Merrill Co was acquired by Macmillan in 1985, which was later merged into what is now Penguin Random House.
Where is a giant multipolar neuron located?
Giant multipolar neurons can be found in the central nervous system of vertebrates, particularly in the spinal cord and some parts of the brainstem. They are known for their large cell bodies and multiple dendritic projections that receive and integrate signals from other neurons.
How is the function of epithelium reflected in its structure?
Since epithelium needs to serve as both a barrier and selectively permeable membrane, the cells need to be tightly junctioned to one another (thus prohibiting paracellular transport) and need to express channels, transporters or exchangers to allow for movement of selected ions/molecules across the epithelial barrier
Why Ramon y Cajal called Neurons the Butterfly to the Soul?
Santiago Ramón y Cajal referred to neurons as the "butterflies of the soul" to highlight their delicate and intricate nature, much like the graceful and beautiful form of a butterfly. He believed that neurons were responsible for our thoughts, emotions, and consciousness, making them essential for understanding the workings of the mind and soul.
Some neurotransmitter molecules have a molecular structure that precisely fits the receptor site on the receiving neuron, much as a key fits a lock. When the agonist molecule excites, it is similar enough in structure to the neurotransmitter molecule that it mimics its effects on the receiving neuron. Morphine, for instance, mimics the action of endorphins by stimulating receptors in brain areas involved in mood and pain sensations. This antagonist molecule inhibits. It has a structure similar enough to the neurotransmitter to occupy its receptor site and block its action, but not similar enough to stimulate the receptor.
A neuron is what your nervous tissue is made of. It transmits information in the form of electro-chemical changes, which are called nerve impulses.
=== All neurons have three main parts: 1. a cell body which contains a nucleus. 2. dendrites, which are extensions off of the cell body that receive the signals. They are hair-like structures. and 3. An axon, which is what sends out the neuron's signals. It is also an extension from the cell body, but a larger one than the dendrites. It is encased in a faty sheath and there is only one of these per neuron.
What is the main function of a motor neuron?
The function is to catch/take impulses from the central nervous system and send it to muscles and glands
What is the difference between a nerve dendrite and a nerve axon?
Axons transmit signals away from the cell body.
Dendrites transmit signals into the cell body.
Axons also tend to be much longer than dendrites.
Dendrites are the branched projections of a neuron that act to conduct the electrical stimulation received from other neural cells to the cell body, or soma, of the neuron from which the dendrites project. Electrical stimulation is transmitted onto dendrites by upstream neurons via synapses which are located at various points throughout the dendritic arbor. Dendrites play a critical role in integrating these synaptic inputs and in determining the extent to which action potentials are produced by the neuron. An axon or nerve fiber, is a long, slender projection of a nerve cell, or neuron, that conducts electrical impulses away from the neuron's cell body or soma.
Why food particle is an antigen to the human body?
becauseeven food that we eat are foreign bodies, that is why some phago cyte attack them. correct me if im wrong..
The correct answer for this is,the food particle is an antigen to our body but our body accepts it because, as we intake our food first the digestive enzymes act upon the food then they are digested into simple substances i.e carbohydrates,proties and fats which inturn are composed of carbon,hydrogen,nitrogen....our DNA is composed of these compounds if u see the backbone and structure of DNA it is composed of carbon rings nitrogenous compounds and hydrogen bonds so as our DNA is composed of these substances the body accepts the food particles....What is the neuronal basis of denervation hypersensitivity?
Denervation hypersensitivity occurs in multiple sclerosis. In multiple sclerosis demyelination of oligodendrocytes in the central nervous system and Schwann cells in the peripheral nervous system result in disruption of communication between upper motor neurons in the brain and the lower motor neurons in the gray matter of the spinal cord. The end result is denervation hypersensitivity with physical symptoms of increased muscle tone, difficulty controlling muscles, exaggerated reflexes, and muscle spasms.
What two structures does the auditory tube connect?
The auditory tube, also known as the Eustachian tube, connects the middle ear to the nasopharynx. This connection helps to equalize pressure between the middle ear and the environment, allowing for proper hearing function and ventilation of the middle ear.
Describe Assessment in clinical and non clinical settings?
In clinical settings, assessment involves evaluating a patient's physical, mental, and emotional health to diagnose and treat medical conditions. This includes taking medical histories, conducting physical examinations, and ordering tests. In non-clinical settings, assessment refers to the process of evaluating individuals or groups to measure knowledge, skills, abilities, or behaviors in educational, organizational, or research settings. This can involve using tests, surveys, observations, or interviews to gather data for decision-making and goal-setting purposes.
Why is the action potential generated in neurons only?
may be there are specific arrangement of sodium and potassium ion channels in neurons which is not found in any other cell andthis arrangement is necessary for action potential generation but i am ot sure what kind of arrangement is needed for action potential generation and what kind is presentr in neurons and other cells .
What color are masses of myelinated nerve fibers?
Mylein is Fat, and is white.
Answer #2 Myelin is actually a cell covering the "shaft" of a nerve axon, improving conduction across the cell as a whole. It doesn't hold stain as well, and generally appears whiter than unmyelinated cells, so they are white. Myelin isn't fat.
How many antigens are there in the human body?
There is no definite number of antigens in the human body as the immune system can recognize a wide range of foreign substances. Antigens can come from pathogens like bacteria and viruses, as well as from our own cells in cases of autoimmune diseases. The human body constantly encounters new antigens and can generate immune responses against them.
