During this essay, I will be defining the process of nerve impulses. To begin with, the definition of nerve impulses is a progressive wave of electric and chemical activity along a nerve fiber that stimulates or inhibits the action of a muscle, gland, or other nerve cell. If that didn’t help, in easier words, electrical waves that go from the brain, travel through the nerves, and go to places and tell them what to do. First, we start with the brain. This is an extremely broad topic, so I will just basically outline it. The brain is a 3 pound hunk of tissue. That might not seem like much, but it holds the power to create the things that you like, don’t like, your personality, and your thoughts. This is all achieved through nerve impulses. Electric waves, like I have said before, have different frequencies and sequences to tell who to do what. Secondly, we decide, how do the waves travel through the body? They couldn’t just spread through blood, like electricity does through water, can it? No, they can’t go through blood, actually. They simply travel through the spine, which branches off into nerves, which spread to all parts of the body. They work like a relay system; the brain sends a nerve impulse down the spine, which gives the signal off to a nerve, which travels to say, the knee, and tells it to bend. This process takes just under half a second to take place. Next, well, we’ll discuss how fast they are. Action potentials can travel along axons at speeds of 0.1-100 m/s. This means that nerve impulses can get from one part of a body to another in a few milliseconds, which allows for fast responses to stimuli. (Impulses are much slower than electrical currents in wires, which travel at close to the speed of light, 3x108 m/s.) The speed is affected by 3 factors:
Temperature - The higher the temperature, the faster the speed. So, warm-blooded animals have faster…
belts or hoses. All of these wearable parts are not in an electric vehicle, this means no breaking down on the side of the road because you forgot to change the oil, and the best part is there is no unpredictability. “Of course we won’t really know how reliable they are until they’re parked in every driveway, though this should give you an idea: Electric motors are predicted to take the average electric car owner at least one million miles before needing its bearings replaced. Once the bearings have…
first human carrying flight occurred, guy died
2HOW IT WORKS
Hot air balloons are based on a very basic scientific principle: warmer air rises in cooler air. Essentially, hot air is lighter than cool air, because it has less mass per unit of volume. Each cubic foot of air contained in a hot air balloon can lift about 7 grams. That's not much, and this is why hot air balloons are so huge
Aka the law of volumes
describes how gases tend to expand when heated.
When the pressure on…
ores will be impacted, squeezed and bent constantly in the crushing chamber. At last, the whole ore crushing process is finished.The motor drives the rotor that is fixed on the main bearing to run quickly toward certain direction when the machine works. The materials fall into the throw-up disc and will be impacted by the high speed strips of the throw-up disc, and then strike with the impact board under the effect of centrifugal force.ore vibrating feeder: http://www.hxjq-mill.com/products/vibrating_feeder…
J K Heard
West GA Technical College
November 25, 2012
Multiple Sclerosis and How it Affects the Brain and the Patient Psychologically
Multiple Sclerosis (MS) is a disease that affects the nervous system, the spinal cord, and brain. MS is a disease that destroys the myelin sheath, the substance that engulfs and protects our nerve cells. After many years of research no one knows exactly what causes MS. In the past having MS was very difficult. It’s still is, but…
Explain how financial markets work in the United States.
Companies issue shares of stock to raise funds for their business. The investor buys stock with the hope that it pays dividends, or earnings. The investor also hopes the price of the stock will increase in value. There is no guarantee that there will be dividends or the price will go up. Investors buy and sell shares in the stock market. This is called a secondary market. The money changing hands does not go to the company. A company is…
start eating healthier so that I was able to have more energy in my body to be able to do the recommended exercise I need.
I: Introduction Overview of my Behavior Change:
I selected this behavior change because I have very bad eating habits. I work at a fast food place so I eat a lot of fast food. Going to HACC, makes it hard to eat healthy because there is not a lot of healthy foods in the cafeteria. I want to eat healthy in order to obtain more energy. I love junk food like chips and candy…
How it works
Irradiation is the process of exposing a substance to ionizing radiation whose source is photons ( γ -rays, x rays), or high energy electrons. Gamma rays are produced by radioactive isotopes such as cobalt-60 and cesium-137. These isotopes have been approved for use in food because the γ -rays they produce have insufficient energy to induce radioactivity in foods. On the other hand electron beams are produced by electron accelerators, such as Van de Graff generators or linear accelerators…
Associate Level Material
How Computers Work
Examples (at least two)
Computer equipment and peripherals: the equipment and devices that make up a computer system as opposed to the programs used on it
Programs and applications for computer: programs and applications that can be run on a computer system, e.g word processing or database packages
1. Microsoft windows
2. Linker software
3. Microsoft word
How does a film set work?
Wednesday, April 24, 2014
Who never stayed up late at night watching theirs favorite TV shows or movies, does not really understands the truly magic of filmmaking. Predominantly a visual medium that main goal is to make the audience believe that fiction is actually tangible, something that cannot be just viewed, but something that makes sense and it is real, having infinite possibilities in its own fantasy land.
pH-sensitive multiparticulate drug delivery system
- how it works:
- a nano-suspension was made from with the drug, and then chitosan bead were made, which were degradable selectively in the colon
Advantage – area specific absorption of drug. And prevent drug form degradation, for non-soluble drugs
Disadvantage – not for water soluble drugs (have to make suspension), not for sustained release,
Modified Push-pull osmotic systems –
- how it works
- the system has two compartments, one is hydrogel…