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CHAPTER 11 Nervous Tissue - Austin Community College
CHAPTER 11 Nervous Tissue - Austin Community College

... Such pathways may create converging, diverging or reverberating circuits as is shown in the next slide. Such circuits may produce EPSP’s or IPSP’s and help modulate the neuronal signals. ...
ch. 48 Nervous System notes
ch. 48 Nervous System notes

... environments to CNS  Interneurons: integrate sensory input and motor output (carry stimuli in the brain and spinal cord)  Motor Neurons: convey impulses from CNS to effector cells in muscles or glands  Glial cells: support, protect, and nourish neurons ...
Part 1 (nerve impulses, ppt file)
Part 1 (nerve impulses, ppt file)

... permeable to Na+ momentarily. Some Na+ rushes in and causes depolarization, which in turn, shuts off the permeability to Na+. Then repolarization occurs. ...
Nervous System - wondersofscience
Nervous System - wondersofscience

... • carries information from the various parts of the body to the brain. It is also the reflex center. – A reflex is a rapid and involuntary reaction to a stimulus – A reflex arc is the path taken by a nerve impulse during a reflex ...
Human Nerve Chapter
Human Nerve Chapter

... Nervous systems perform these basic functions: Receiving sensory input from the internal and external environments through receptors. Integrating the inputs in a central location to determine an appropriate response. Producing a motor response that causes one or more muscles to contract and move a b ...
Structural arrangement of the nervous sytem. Blood-brain
Structural arrangement of the nervous sytem. Blood-brain

... axoplasm = cytoplasm of the axon ...
7th sci Nervous System and Brain ppt nervous system and
7th sci Nervous System and Brain ppt nervous system and

... • Motor: sending of signals to muscles and/or glands to elicit a response ...
Power Point
Power Point

... – Mature neurons cannot undergo mitosis so damage to nervous tissue can be permanent – Neurons have a limited capacity to repair themselves and can be repaired if the damage is not extensive ...
Nervous System
Nervous System

... It begins in the dendrites, moves rapidly towards the neurons cells body, and then down the axon until it reaches the axon tips. It travels along the neuron in the form of electricity. ...
Nervous_System
Nervous_System

... lipid and protein sheath covering neuron axons (not all axons are myelinated)  Electrically insulates axon and increases conduction speed (Ex. Leaky garden hose)  Multiple Sclerosis: Autoimmune disease that breaks down the myelin sheath in the CNS.  Tremors: Unregulated electrical impulses ...
BIOLOGY 12: U NIT M/N - C A. CHAPTER REVIEW 1. What are the
BIOLOGY 12: U NIT M/N - C A. CHAPTER REVIEW 1. What are the

... 15. What happens to the postsynaptic membrane if the released product is excitatory? Result when released product is inhibitory? _____________________________________________________________________________________________________________________ _____________________________________________________ ...
file - Athens Academy
file - Athens Academy

... responsible for ridding the brain of debris and foreign substances – it acts as an immune system for the nervous system. ...
Nerves Part 1 Powerpoint
Nerves Part 1 Powerpoint

... storing information – This is how we think and remember! ...
Ch. 48-49 Nervous System 9e S13
Ch. 48-49 Nervous System 9e S13

... Organization of the Nervous System • Central nervous system (CNS) = brain + spinal cord • Peripheral nervous system (PNS) = nerves throughout body – Sensory receptors: collect info – Sensory neurons: body  CNS – Motor neurons: CNS  body (muscles, glands) – Interneurons: connect sensory & motor n ...
Guided Notes
Guided Notes

... ii. ________ nerve axons can regenerate successfully if cell body is not destroyed iii. Uninjured cell body swells to prepare to synthesize proteins to support regeneration 1. axon regeneration = ______________________ 2. greater distance = less recovery chance = possible ______________ formation 3. ...
NOVEL APPROACHES TO TRAUMATIC BRAIN AND SPINAL
NOVEL APPROACHES TO TRAUMATIC BRAIN AND SPINAL

... • Traumatic brain and spinal cord injuries (TBI & SCI) are incurred by over 1.7M individuals yearly in the US alone • There are currently no effective treatments for TBI and SCI resulting in significant unmet need • Recovery from these central nervous system (CNS) injuries is poor due to the limited ...
File
File

... Leafy vegetables such as spinach and turnip greens dried beans and peas, fortified cereal products,sunflower seeds and certain other fruits and vegatables are rich sources of folate. Some breakfast cereals are fortified with 25% to 100% of the recommended dietary allowance ...
Nervous System
Nervous System

... out from the cell body; receive and carry impulses to the cell body 3. axon- long, fibrous part of neuron; conducts nerve impulses away from cell body 4. at the end of the axon, the impulse travels across the synapse, a tiny gap separating the axon of one neuron from the dendrite of another. Once th ...
Unit 4 – Coordination Reflex Arc
Unit 4 – Coordination Reflex Arc

... – cover brain surfaces – formation of blood-brain barrier – regulate composition of cerebrospinal fluid – remove neurotransmitters and potassium ions from ICF – repairing damaged tissue with scar tissue Occur in the Peripheral Nervous System • Schwann cells – form myelin sheath in PNS • Satellite ce ...
Nervous System Peripheral Nervous System
Nervous System Peripheral Nervous System

... Central Nervous System (CNS)Control center of the nervous system controlling both voluntary and involuntary actions ...
SBI4U Nervous System
SBI4U Nervous System

... • Acetylcholine and norepinephrine ...
PSY110 Psychology
PSY110 Psychology

...  Endocrine system communicates with hormones through the blood system The Nervous System  Central Nervous System (CNS) – Brain & Spinal Cord  Peripheral Nervous System – From spinal cord to exremities Spinal Cord  Conduit  Reflexes o Sensory (afferent) neurons o Motor (efferent) neurons – (musc ...
Nervous Systems
Nervous Systems

... The mechanisms of impulse transmission in a neuron. The process that leads to release of neurotransmitters, and what happens at the synapse. ...
Neuron (Nerve Cell)
Neuron (Nerve Cell)

... Medical Procedures & the Brain • How do we know about the brain, its regions, parts & functions? • How have we been able to diagnose problems within the nervous system? • Where & how did the first medical procedures investigating the nervous system occur? ...
- Describe the roles of the different types of glial cells
- Describe the roles of the different types of glial cells

... the tight junctions and prevent any leakage of unwanted substances into the brain. This helps create a very finely and tightly regulated environment and keeps out any potential toxins. Astrocytes also release various neurotrophic factors which regulate axonal growth and neuronal transport - Schwann ...
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Neuroregeneration

Neuroregeneration refers to the regrowth or repair of nervous tissues, cells or cell products. Such mechanisms may include generation of new neurons, glia, axons, myelin, or synapses. Neuroregeneration differs between the peripheral nervous system (PNS) and the central nervous system (CNS) by the functional mechanisms and especially the extent and speed. When an axon is damaged, the distal segment undergoes Wallerian degeneration, losing its myelin sheath. The proximal segment can either die by apoptosis or undergo the chromatolytic reaction, which is an attempt at repair. In the CNS, synaptic stripping occurs as glial foot processes invade the dead synapse.Nervous system injuries affect over 90,000 people every year. It is estimated that spinal cord injuries alone affect 10,000 each year. As a result of this high incidence of neurological injuries, nerve regeneration and repair, a subfield of neural tissue engineering, is becoming a rapidly growing field dedicated to the discovery of new ways to recover nerve functionality after injury. The nervous system is divided into two parts: the central nervous system, which consists of the brain and spinal cord, and the peripheral nervous system, which consists of cranial and spinal nerves along with their associated ganglia. While the peripheral nervous system has an intrinsic ability for repair and regeneration, the central nervous system is, for the most part, incapable of self-repair and regeneration. There is currently no treatment for recovering human nerve function after injury to the central nervous system. In addition, multiple attempts at nerve re-growth across the PNS-CNS transition have not been successful. There is simply not enough knowledge about regeneration in the central nervous system. In addition, although the peripheral nervous system has the capability for regeneration, much research still needs to be done to optimize the environment for maximum regrowth potential. Neuroregeneration is important clinically, as it is part of the pathogenesis of many diseases, including multiple sclerosis.
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