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Terms: nervous system
Matches: 29 Displayed: 20
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- Science > Biology > Human - Anatomy > Brain and Nervous System
Specific Results
- Brain and Nervous System Worksheets (Chudler)
Neuroscience for Kids provides worksheets for teachers to use in the classroom. 12-99
- Brain (Franklin Institute)
Shows how we get better at tasks as we repeat them. 5-02
- Brain and Neuroscience (Chudler)
Provides articles and diagrams for students to learn about the brain, spinal cord, senses, and neuroscience. 5-00.
- Brain and Neuroscience Resources (Chudler)
Provides over 100 sources of information. 5-02
- Brain and Neuroscience (Awesome Library)
Provides articles on the brain and neuroscience. Most articles are for advanced high school students or above. 5-02
- High Levels of Mercury Found in Fish (Fox News)
"The federal government advises pregnant women, nursing mothers and young children to avoid fish with high levels of mercury — shark, swordfish, king mackerel or tilefish. Elevated mercury levels have been linked to learning disabilities and developmental delays in children and to heart, nervous system and kidney damage in adults."
"A supermarket industry group said it was not surprised by the survey, because swordfish and tuna are known to have higher levels of mercury. Many stores already offer brochures or have signs, the group said." 9-05
- Better Pain Reliever Found (Scientific American)
"Morphine and other opioids work wonders for pain. Unfortunately, their effectiveness declines over time while their addictiveness grows, meaning patients need the drug even as it affords them less and less relief. But new research into the cellular workings of opioids offers a promising new pathway to improved pain relief--without the addiction--by triggering one receptor and blocking another."
"Medicinal chemist Philip Portoghese of the University of Minnesota and his colleagues began by studying two of the four major opioid receptors in the cells of the central nervous system. Each bears the name of a Greek letter and the chemists focused on the Mu and Delta receptors. Previous research had shown that drugs that linked up with Mu receptors lasted longer with less addiction when combined with drugs that blocked Delta receptors. But it was not known whether the two channels worked separately or in concert to improve the overall effect." 12-05
- Robotic Arm Directed by Thoughts (BBC News)
"Scientists in the US have created a robotic arm that can be controlled by thought alone." 06-06
- Man "Rewires" Own Brain: A First (USA Today)
"Doctors have their first proof that a man who was barely conscious for nearly 20 years regained speech and movement because his brain spontaneously rewired itself by growing tiny new nerve connections to replace the ones sheared apart in a car crash." 07-06
- Man Moves Objects With Thoughts (BBC News)
"A sensor implanted in a paralysed man's brain has enabled him to control objects by using his thoughts alone." 07-06
- Memories Have "Plasticity" (ScienceDaily.com)
"Dissecting the mechanisms behind emotional memory is important because the region of the brain that governs this also controls fear and anxiety. That is why an emotional memory, such as a traumatic car accident, can activate the autonomic nervous system, causing bodily responses like an increase in heart rate, sweating and blood pressure -- even if you don't realize it." 01-07
- Jellyfish (DNR.SC.gov)
"Instead of a brain, jellyfish possess an elementary nervous system, or nerve net, which consists of receptors capable of detecting light, odor and other stimuli and coordinating appropriate responses."
"The life cycle of a typical jellyfish is complex and involves an alteration of generations in which the animal passes through two different body forms."
Provides diagrams.
- Researchers Disagree on Use of Body Signals in Screening (CNN News)
"The Homeland Security-funded project is Future Attribute Screening Technology, or FAST. Instead of focusing on whether you have hidden explosives or whether you're carrying a weapon, sensors and cameras located at security checkpoints would measure the natural signals coming from your body -- your heart rate, breathing, eye movement, body temperature and fidgeting."
"Those physiological signs, measured together, will indicate whether you might have the desire or intent to do harm, project manager Robert Burns said."
" 'We're going to look for the elevation, but we're also going to look for the absence of signals, which is just as indicative of being something that has to be resolved,' Burns said."
" 'I haven't seen any research that shows that those measures from the autonomic nervous system ... measuring blood pressure, measuring breathing, measuring heat on the face, are at all related to intent,' said Stephen Fienberg, professor of statistics and social sciences at Carnegie Mellon University."
"Fienberg, who participated in a government study critical of the use of polygraphs, said he worries that a lot of money is being spent on a program that in the end will show 'the emperor has no clothes.' " 12-09
- Who Has a Better Brain: Liberals or Conservatives? (CBS News)
"The brains of people who call themselves liberals tend to have larger anterior cingulate cortexes than the brains of people on the opposite side of the political spectrum, the study showed. The anterior cingulate cortex is a collar-shaped region around the corpus collosum, a structure that relays signals between the right and left hemispheres of the brain."
"What about conservatives? Their brains brains tend to have larger amygdalas. The amygdala is an almond-shaped structure located deep within the brain."
"Based upon what brain scientists know about the function of the two brain regions, researchers believe the structural differences support the notion that liberals are better equipped to make sense of conflicting information while conservatives are better able to recognize a threat." 04-11
- Spiders (Wikipedia.org)
"Spiders (order Araneae) are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other groups of organisms.[1] Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exception of air and sea colonization. As of 2008, approximately 40,000 spider species, and 109 families have been recorded by taxonomists;[2] however, there has been confusion within the scientific community as to how all these families should be classified, as evidenced by the over 20 different classifications that have been proposed since 1900.[3]"
"Anatomically, spiders differ from other arthropods in that the usual body segments are fused into two tagmata, the cephalothorax and abdomen, and joined by a small, cylindrical pedicel. Unlike insects, spiders do not have antennae. In all except the most primitive group, the Mesothelae, spiders have the most centralized nervous systems of all arthropods, as all their ganglia are fused into one mass in the cephalothorax. Unlike most arthropods, spiders have no extensor muscles in their limbs and instead extend them by hydraulic pressure." 08-12
- List of Animals by Number of Neurons in the Brain. (Wikipedia.org)
Neurons are considered a key to intelligence. Humans are not first in this list. 04-16
- A Bigger Brain Is Not Necessarily Better (Gizmodo.com)
"Cows, for example, have larger brains than just about any species of monkey, but unless they're very, very good at hiding it, cows are almost certainly less cognitively capable than most, if not all, 'lesser-brained' primates."
"The average human brain weighs in at around 3 pounds, and an elephant brain can weigh close to four times that much, but the biggest brains of all come sperm whales, and weigh an average of 17 pounds." 04-16
- Multiple Sclerosis - Fact Sheet (Family Caregiver Alliance)
"Multiple Sclerosis (MS) is one of the most commonly occurring chronic neurological diseases. MS affects the central nervous system (CNS)—the brain and spinal cord—and is thought to be caused by a disorder of the immune system, or auto-immune disorder. About 400,000 people nationwide, and possibly 2.5 million people worldwide, have MS. The disorder affects people of all ages, but onset is most likely to occur between the ages of 20 and 40. Women are twice as likely as men to develop MS." 1-04
- Neurofibromatosis
Provides information on the genetic disability that causes tumors on the peripheral nervous system. NF-1 is sometimes called von Recklinghausen's Disease.
- Tetanus (MayoClinic.org)
"Tetanus is a serious bacterial disease that affects your nervous system, leading to painful muscle contractions, particularly of your jaw and neck muscles. Tetanus can interfere with your ability to breathe and, ultimately, threaten your life. Tetanus is commonly known as 'lockjaw.' "
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