Nerve Structures of the Spine Nerves control the body’s functions including the vital organs, sensation, and movement. The nervous system receives information and initiates an appropriate response. It is affected by internal and external factors (ie, stimulus). Nerves follow tracts and cross over junctions called synapses. A Science Teacher Shares Tech Resources For Teachers, Parents & Students I teach Middle School Science, mainly physical, environmental, and life to 6th and 8th graders. Through grants I have acquired 14 iPads for my students to use everyday. Students are also welcome to use their own handheld devices or smartphones. For those who have no devices or technology of their own I also have enough iMacs and Netbooks to create a 1:1 environment of student to technology. Science is a subject where I can easily integrate technology to help my students learn and demonstrate learning of all the topics that we study. Stopwatch + Calculator When we do labs, students make use of the iPad app iLab: Timer HD (not free) as a stopwatch as well as the free calculator app Pcalc Lite.
7 Beers That You Should Stop Drinking Immediately organics.org Many of us choose what we eat very carefully, or at least dedicate our minimum attention to it. But when it comes to drinks, especially alcoholic beverages, we do little to make the best decisions for our health. Which is a HUGE mistake. All the work for your body can be ruined in a weekend out. While foods and non alcoholic beverages are required to list their ingredients and are monitored by the FDA, beer does not belong in either. Cell Size and Scale Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny. Smaller cells are easily visible under a light microscope. It's even possible to make out structures within the cell, such as the nucleus, mitochondria and chloroplasts.
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100 Very Cool Facts About The Human Body The Brain The human brain is the most complex and least understood part of the human anatomy. There may be a lot we don’t know, but here are a few interesting facts that we’ve got covered. Nerve impulses to and from the brain travel as fast as 170 miles per hour. Ever wonder how you can react so fast to things around you or why that stubbed toe hurts right away? It’s due to the super-speedy movement of nerve impulses from your brain to the rest of your body and vice versa, bringing reactions at the speed of a high powered luxury sports car.The brain operates on the same amount of power as 10-watt light bulb. 50 Awesome Chemistry Videos For The Busy Science Teacher Though we don’t often recognize it, chemistry defines nearly every element of our everyday lives. From the reactions that fuel the sun to the biology of our bodies to the technology in our gadgets, chemistry is at the heart of everything we do and is the central science that unites biology, physics, geology, astronomy, medicine, and countless other fields. Yet chemistry doesn’t always get the credit and recognition it deserves for playing such an awesome role in, well, everything. If you’ve been slighting chemistry, there’s no better time to give the field the credit it deserves than National Chemistry Week.
How to Perform the Heimlich Maneuver You’re in a restaurant enjoying a dinner with friends, when all of a sudden you hear a woman shriek: “He’s choking!” You calmly excuse yourself from the table and dash with effortless cool towards the source of the loud yell. You find a man with a look of terror in his eyes, gripping his throat, indicating that something is lodged within. You politely ask the distraught woman to step aside. You place your arms around the choking man’s abdomen and give two deft inward thrusts.
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