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MrRissso [65]
3 years ago
10

Describe the three types of white matter fibers.

Biology
1 answer:
Vlad [161]3 years ago
7 0

Answer:

The white matter fibers are the main component of the brain. Three different types of white matter fiber are :

Commissural fibers:

This fiber is important for the connection of the corresponding left hemisphere and right hemisphere of the brain.

Projection fibers:

These fibers helps in the connection of the brain stem and the spinal cord with the cerebral cortex.

Association fibers:

These fibers are associated with the connection of the brain regions within the same hemisphere of the brain.

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How would scientists know if populations were increasing or decreasing over time?
jeka94

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charts that show population increase or decrease.

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3 years ago
What is the correct way to write an individual's blood pressure?
dmitriy555 [2]
Hello!

The blood pressure is supposed to be stable at all times to prevent strokes or other deadly effects. You measure the blood pressure with a sphygmomanometer around the arm and listen to the pulse. When completed, you would write the blood pressure like so: 120 over 80. If you write it any other way, it would be incorrect, so you measure the first sound first, then when the sound stopped and remember to write "over."

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SuperHelperThingy
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3 years ago
Which seismic waves are felt first at a seismic station
vlabodo [156]
Question-
Which seismic waves are felt first at a seismic station

Answer-
Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. They are the energy that travels through the earth and is recorded on seismographs.


There are several different kinds of seismic waves, and they all move in different ways. The two main types of waves are body waves and surface waves. Body waves can travel through the earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes radiate seismic energy as both body and surface waves.

BODY WAVES
Traveling through the interior of the earth, body waves arrive before the surface waves emitted by an earthquake. These waves are of a higher frequency than surface waves.

P WAVES
The first kind of body wave is the P wave or primary wave. This is the fastest kind of seismic wave, and, consequently, the first to 'arrive' at a seismic station. The P wave can move through solid rock and fluids, like water or the liquid layers of the earth. It pushes and pulls the rock it moves through just like sound waves push and pull the air. Have you ever heard a big clap of thunder and heard the windows rattle at the same time? The windows rattle because the sound waves were pushing and pulling on the window glass much like P waves push and pull on rock. Sometimes animals can hear the P waves of an earthquake. Dogs, for instance, commonly begin barking hysterically just before an earthquake 'hits' (or more specifically, before the surface waves arrive). Usually people can only feel the bump and rattle of these waves.

P waves are also known as compressional waves, because of the pushing and pulling they do. Subjected to a P wave, particles move in the same direction that the the wave is moving in, which is the direction that the energy is traveling in, and is sometimes called the 'direction of wave propagation'. Click here to see a P wave in action.
8 0
3 years ago
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