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Nervous System - Downey Unified School District
Nervous System - Downey Unified School District

... • SENSORY NEURONS- CONDUCT NERVE IMPULSES FROM RECEPTORS IN PERIPHERAL BODY PARTS INTO THE BRAIN AND SPINAL CORD • THEIR SPECIALIZED TO DETECT CHANGES IN THE OUTSIDE WORLD OR WITHIN YOUR BODY • MOST OF THE SENSORY NEURONS ARE FOUND TO BE UNIPOLAR, BUT SOME ARE BIPOLAR ...
The Review
The Review

... 13. What is a split brain operation? Why would it be performed? Why is it that a split brain person can not describe what they are holding in their left hand? 14. What is and EEG, CAT, MRI, and PET? 15. What is the difference between a neurotransmitter and hormone? 16. Know your glands! ...
Can an Injured Spinal Cord Be Fixed?
Can an Injured Spinal Cord Be Fixed?

... levels of testosterone in human males does not lead directly to higher levels of violent aggression ...
CH005a NERVOUS SYS - INTRO 10-22
CH005a NERVOUS SYS - INTRO 10-22

... number of processes that extend from the cell body. ...
Module 3
Module 3

... The All-or None Response • The idea that either the neuron fires or it does not- no part way firing. • Like a gun ...
Nueron - AP Psychology Community
Nueron - AP Psychology Community

... The All-or None Response • The idea that either the neuron fires or it does not- no part way firing. • Like a gun ...
Ch 11 Part 1 - Groch Biology
Ch 11 Part 1 - Groch Biology

... Supporting cells found in the CNS are called neuroglia. ___ _______________ Neurons are mitotic. ___ ____________________ Schwann cells and satellite cells are found only in the CNS. ___ ________________ Ependymal cells show irritability and conductivity. ___ ____________________ Almost 50% of the v ...
Peripheral Nervous System
Peripheral Nervous System

... Terminal Buttons (AKA: Axon Terminals) * Sends Messages ...
The brain is the body`s most complex organ. Neurons communicate
The brain is the body`s most complex organ. Neurons communicate

... Synapses are chemical or electrical junctions that allow electrical signals to pass from neurons to other cells. ...
Document
Document

... • Surrounded by a myelin sheath, a wrapping of lipid which: – Protects the axon and electrically isolates it – Increases the rate of electrical action potential transmission ...
C! **D!**E!**F! - Amherst College
C! **D!**E!**F! - Amherst College

... • Before it was understood that nerves signal using electricity, what mode of signalling was attributed to nerves? • What is the earliest experiment (as distinct from observation) cited in Chapter 1? • What are the arguments that experiments on animals such as rats can be relevant to understanding h ...
Chapter 13 and 16
Chapter 13 and 16

... A. Astrocyte- function in creating bloodbrain barrier, provide structure B. Oligodendocyte- produce myelin sheath C. Microglia- immune cells of CNS, similar to macrophages D. Ependymal- found in ventricles of brain, produce cerebrospinal fluid ...
4.BiologicalPsycholo..
4.BiologicalPsycholo..

... Myelin sheath – speeds up transmission ...
Nervous System
Nervous System

... dendrites of many other nerve cells (synapses) • In a synapse, the axon and dendrite don’t touch, there is a gap • At each axon terminal, there are vesicles containing a neurotransmitter • Once the neurotransmitter is released, it binds to receptors on the dendrite • The chemical signal gets transdu ...
STUDY GUIDE CHAPTERS 48 and 50 THE NERVOUS SYSTEM
STUDY GUIDE CHAPTERS 48 and 50 THE NERVOUS SYSTEM

... *Think about this: How might a brain researcher investigate the function of different areas of the brain, without using electrodes or invasive surgery? We will discuss Nervous Systems, Chapter 49, in class. In Chapter 50, Sensory and Motor Mechanisms, it is more important to learn about general sens ...
36.1: The Nervous System
36.1: The Nervous System

... 3 Types of neurons • 1. Sensory neurons: carry impulses from the body to the spinal cord and brain (sense receptors) • 2. Motor neurons carry the response impulses away from the brain and spinal cord to a muscle ...
Chapter 8 Study Guide: The Nervous System
Chapter 8 Study Guide: The Nervous System

... – Neurons and glial cells – Neurons conduct impulses, whereas glial cells are for support ...
Document
Document

... • Presynaptic neurons send the neuron. • Postsynaptic neurons receive the neuron. • Active neurons (excitatory) produce an action potential which travels down the neuron. • A synapse releases neurotransmitters that change the electrical potential of the next neuron. • Inactive neurons (inhibitory) s ...
Nervous System - Lemon Bay High School
Nervous System - Lemon Bay High School

... – How Does it Offer Protection? It bathes the brain and cushions from trauma. – How is it Formed? In a Dense capillary bed by called the CHOROID PLEXUS ...
Neurons - Transcript - the Cassiopeia Project
Neurons - Transcript - the Cassiopeia Project

... symphonies... is not the product of simple cellular interactions. And yet it might be...because everything that humans do (or think or feel) is the result of the basic units of brain structure - the neurons. The human brain contains more than a hundred billion neurons. Just like a single ant could n ...
Students know
Students know

... changing the number of action potentials (nerve impulses) that are generated. • Stimulants-drugs that increase the number of action potentials (nerve impulses) that neurons generate by increasing the amount of neurotransmitters in the synapses. ...
Neurotoxicity
Neurotoxicity

... General protein synthesis impairment may have an effect not only on the neurotransmitters production, but also the production of important enzymes which break down neurotransmitters when they are no longer needed. ...
Webquests_files/Nervous System SWQ
Webquests_files/Nervous System SWQ

... Use the following website to play an interactive game. Click on Probe the Brain Activity. http://www.pbs.org/wgbh/aso/tryit/brain/# 12. How many body parts do the section of the brain included control? ...
Ch. 35.3
Ch. 35.3

... of the brain and spinal cord  Skull and vertebrae protect brain and spinal cord • Wrapped in MENINGES  connective tissue • CEREBROSPINAL FLUID is in between the layers  Acts as a shock absorber and protects the CNS ...
The Nervous System
The Nervous System

... • The myelin sheath is made by the neurglia • Gaps in the myelin called nodes of Ranvier • Signal “jumps” down the axon which increases the ...
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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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