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Biology The Nervous System
Biology The Nervous System

... information from other neurons and pass the message through the cell body Axon- carries messages away from the neuron, single fiber Myelin- covering of the axon, insulates and protects the axon, helps to speed up the transmission of the message Axon terminal- small fibers branching out from an axon ...
intro to psych brain and behavior
intro to psych brain and behavior

... Firing is an all or nothing event The neuron either fires, or doesn’t fire ...
Sensory neurons
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... Many animals and bacteria contain toxins in their venom or body and when these interact with the human body, they can potentially cause devastating effects. This is especially true for toxins that target the nervous system. Some toxins are small enough to enter the axon and interfere with the electr ...
Nervous System
Nervous System

... • Contains normal cellular structures (golgi ...
Nervous System Notes Outline
Nervous System Notes Outline

... Impaired ________________ skills Lack of ________________ skills ________________ behaviors About 10% of those with autism are ________________ ________________ They have an extraordinary ability in ___________, calculations, _____, or music Ex. ________________ 45. What is Capgras syndrome?  ...
The Nervous System
The Nervous System

... | You have conscious control over the activities of the somatic motor neurons. | You do not have conscious control over the activities of the visceral motor neurons. | To get from the CNS to a visceral effector the signal must travel along one axon be relayed across a synapse, and then travel along ...
EXPLORING PSYCHOLOGY (7th Edition in Modules) David Myers
EXPLORING PSYCHOLOGY (7th Edition in Modules) David Myers

... – paralysis results ...
neurons and the nervous system
neurons and the nervous system

... Receive messages from other neurons and send them to the cell body  Cell Body or Soma  The control center of the neuron.  Function: Directs impulses from the dendrites to the axon.  Nucleus  Control center of the Soma.  Function: Tells the soma what to do. ...
Neurons - World of Teaching
Neurons - World of Teaching

... abundance of + charges compared to inside. The inside of the membrane is negative compared to the outside. This is helped by the (-) proteins etc. The “sodium-potassium” pump pulls 2 K+ ions in for 3 Na+ ions sent out. This further creates a charge difference!! ...
Chapter 12 - FacultyWeb
Chapter 12 - FacultyWeb

... between cells/electrical synapses Chemical synapses involve direct connection between cells/chemical synapses Electrical synapses always use ACh/both are equally abundant ...
A View of Life
A View of Life

... – Maintain homeostasis in the fluid that bathes neurons. ...
Biology 3201 - s3.amazonaws.com
Biology 3201 - s3.amazonaws.com

... abundance of + charges compared to inside. The inside of the membrane is negative compared to the outside. This is helped by the (-) proteins etc. The “sodium-potassium” pump pulls 2 K+ ions in for 3 Na+ ions sent out. This further creates a charge difference!! ...
The Nervous System
The Nervous System

... is the reflex reactions of skeletal muscle. These are involuntary reactions to external stimuli. ...
File
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... Activity 34.2 The Human Cerebrum 1. What part of the brain controls muscle activity and maintaining balance. 2. What is the job of the frontal lobe? 3. What is the job of the parietal lobe? Activity 34.3 Structures of the Human Brain Practice the structures of the human brain. Interactive Tutorial 3 ...
Brain and Neuron Quiz Key
Brain and Neuron Quiz Key

... Fill in the blanks with the correct words from the word bank. Some words may be used more than once, and some may not be used at all. 1. The frontal lobes control motor function. ...
Nervous System Worksheet
Nervous System Worksheet

... _____ 1. All of the following are functions of the nervous system EXCEPT A. senses changes. B. analyzes changes. C. stores calcium. D. responses to changes. _____ 2. What is the central nervous system? A. The thin 'core' or centre of each nerve cell. B. The nerves that control the main (or central) ...
Nervous System
Nervous System

... membrane through channel proteins (3). Some channel proteins never shut, so the ions diffuse through them all the time. Other channel proteins act like flood gates, that open only after a neuron is stimulated. Sodium-potassium pumps (active transport proteins) restore the neuron to resting potential ...
bio12_sm_11_1
bio12_sm_11_1

... often used to remove tumours. In some cases, treatment of tumours with radiation and chemotherapy is required, if the tumours become cancerous. Other treatments for NF-1 are directed towards relieving symptoms associated with this disorder such as assistance with overcoming learning disorders that a ...
Nervous System PowerPoint
Nervous System PowerPoint

...  After the impulse, the gates return to the resting condition with extra potassium gates open. The flow of potassium ions out of the cell restores the resting potential.  The Na+/K+ pump continues to pump the sodium and potassium across the membrane against the concentration gradient to restore th ...
summing-up - Zanichelli online per la scuola
summing-up - Zanichelli online per la scuola

... generates a resting membrane potential that is maintained by the action of proteins in the membrane. ...
Nervous System - ocw@unimas - Universiti Malaysia Sarawak
Nervous System - ocw@unimas - Universiti Malaysia Sarawak

... •  Neuron  (or  nerve  cell)  is  the  structural  and  func8onal  unit   of  the  nervous  system.   •  Sensory  informa
02QUIZ02 ( 44K)
02QUIZ02 ( 44K)

... knew immediately that the blood clot had affected his left cerebral hemisphere because he no longer recognized a picture of his friend." Should Anton be hired? A) Yes. Anton obviously understands brain structure and function. B) No. The right hemisphere, not the left, specializes in picture recognit ...
Click Here To
Click Here To

...  Ex  Circulatory system  change heart rate  Ex  Digestive system  to eat/drink more or to stop  Ex ...
Central Nervous System
Central Nervous System

... Axon: a single strand that extends away from the cell body and conducts impulses away from the cell body. Dendrites and axons are also called nerve fibers. Bundles of nerve fibers bound together by specialized tissues are called nerves. The junction between 2 neurons or between a neuron and a recept ...
Quiz - psychm5
Quiz - psychm5

... have a positive electric charge while neutrons have a negative charge. have neither a positive nor a negative electrical charge. can be found only inside the neuron, creating in your brain an electronic charge of about minus 90 millivolts. ...
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Neurotoxin



Neurotoxins are substances that are poisonous or destructive to nerve tissue. Neurotoxins are an extensive class of exogenous chemical neurological insults that can adversely affect function in both developing and mature nervous tissue. The term can also be used to classify endogenous compounds, which, when abnormally contact, can prove neurologically toxic. Though neurotoxins are often neurologically destructive, their ability to specifically target neural components is important in the study of nervous systems. Common examples of neurotoxins include lead, ethanol (drinking alcohol), Manganese glutamate, nitric oxide (NO), botulinum toxin (e.g. Botox), tetanus toxin, and tetrodotoxin. Some substances such as nitric oxide and glutamate are in fact essential for proper function of the body and only exert neurotoxic effects at excessive concentrations.Neurotoxins inhibit neuron control over ion concentrations across the cell membrane, or communication between neurons across a synapse. Local pathology of neurotoxin exposure often includes neuron excitotoxicity or apoptosis but can also include glial cell damage. Macroscopic manifestations of neurotoxin exposure can include widespread central nervous system damage such as intellectual disability, persistent memory impairments, epilepsy, and dementia. Additionally, neurotoxin-mediated peripheral nervous system damage such as neuropathy or myopathy is common. Support has been shown for a number of treatments aimed at attenuating neurotoxin-mediated injury, such as antioxidant, and antitoxin administration.
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