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Chapter 10 Slides
Chapter 10 Slides

... mammals and other higher vertebrates – capacity for accurate axonal growth is lost in maturity Regeneration is virtually nonexistent in the CNS of adult mammals and unlikely, but possible, in the PNS ...
Nervous System Test Review
Nervous System Test Review

... Initiate Response ...
Central Nervous System
Central Nervous System

... Smooth muscle Cardiac muscle Glands Effector organs (made up of muscle and gland tissue) ...
Nervous System notes
Nervous System notes

... 3. Classification of neuronsa. structural –based on # of processes extending from cell body - multipolar – several dendrites – 1 axon most neurons in the brain and spinal cord are like this - bipolar – 1 dendrite and 1 axon found in retina of eye, inner ear and nose - unipolar – have only 1 process ...
Introduction to the Nervous System and Nerve Tissue
Introduction to the Nervous System and Nerve Tissue

... Communication between neurons at a synaptic junction 1. Electrical Synapses: Communication via gap junctions between smooth muscle, cardiac muscle, and some neurons of the CNS. Provide fast, synchronized, and two-way transmission of information. 2. Chemical Synapses: Communication via chemical neuro ...
Overview of the Day
Overview of the Day

... between neurons is a small space (1 millionth of an inch thick) called synaptic cleft  when action potential reaches knob-like terminals at axon's end, it triggers release of neurotransmitter  they cross synaptic cleft and bind to receptor cites on dendrites of next neuron: receptor cites are spe ...
Nervous System
Nervous System

... –Sensory – carry impulses from the sense organs (receptors) to the CNS –Motor – carry impulses from the CNS to the muscles or glands ...
here - STAO
here - STAO

... receptors on various postsynaptic membranes, certain actions are stimulated. There are quite a variety of other molecules that are structurally similar to various neurotransmitters. As you can imagine, if these molecules interact with your nervous system, there can be peculiar responses. Stimulants ...
Nervous System
Nervous System

... Why are spinal injuries that result in paralysis often permanent? Sensory and motor nerves can heal completely but it is slow. The spinal nerves can also grow but not well enough to repair significant damage. ...
I) Mark right or false beside each sentence and correct the wrong
I) Mark right or false beside each sentence and correct the wrong

... 1- Cardiac muscle of atria or ventricle acts as motor unit and the skeletal muscle as a whole acts as a single motor unit. ( bi ) 2- Oligodendroglia cells form myelin sheath outside CNS while Schwann cells form myelin sheath inside CNS. ( ‫اﻋ)ﻛس‬ 3- The stimulus must be strong enough to depolarize t ...
Unit Outline_Ch17 - Westgate Mennonite Collegiate
Unit Outline_Ch17 - Westgate Mennonite Collegiate

... “Meth” or “crank” is a powerful CNS stimulant. 17.6 Disorders of the Nervous System Disorders of the Brain Alzheimer disease is the most common cause of dementia. Parkinson disease is characterized by a gradual loss of motor control. Multiple sclerosis is the most common neurological disease that af ...
Document
Document

... 5. What is myelin sheath and where is it located? ...
Nervous System & Endocrine System
Nervous System & Endocrine System

... – Nerve cells are called neurons – Neurons are similar to electrical wires and carry ...
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Overview of the Nervous System (the most important system in the

... PNS • Myelin sheaths insulate neurons and increase the speed of the action potential ...
Lesson 7
Lesson 7

... meeting, Mr. Riddle took his friends’ advice earnestly. . .“If you’re ever going to be taken seriously as a super villain, you’ll have to change your name, Tom.” ...
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CH005a NERVOUS SYS - INTRO 10-22

... Spinal Cord – horns, columns; ascending and descending tracts ...
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The Nervous System Lesson Outline LESSON 1 A.

... 3. An automatic movement in response to a stimulus is ...
Human Body Systems - Whitehall District Schools
Human Body Systems - Whitehall District Schools

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November 13th Notes (Nervous System)
November 13th Notes (Nervous System)

... electrochemical messages relayed to and from the brain, or a series of chemical messengers carried in the blood.  Through a series of adjustments, all systems of the body are regulated to maintain the internal environment within safe limits (homeostasis). ...
9 Chapter Nervous System Notes (p
9 Chapter Nervous System Notes (p

...  Parasympathetic nervous system INTRODUCTORY PARAGRAPHS (p. 356) Read the upper 2/3rds of p. 356 and then answer the following questions: 1. Do neurons (nerve cells) in the brain divide to form new brain neurons? ...
12-nervoussystemintro - Alexmac
12-nervoussystemintro - Alexmac

... electrical signals within the nervous system. Sensory receptors, together with other cells, compose the major sense organs, including eyes, ears, nose, and taste buds. Information from different sensory receptors go to specific parts of the brain. ...
Ch 3 Biopsychology & the Foundations of Neuroscience
Ch 3 Biopsychology & the Foundations of Neuroscience

... the ___________ influence male sex characteristics. O 13. Hormones are chemicals secreted into the bloodstream by what type of structures? O glands ...
The Nervous System - Kirchner-WHS
The Nervous System - Kirchner-WHS

... trough the body and up the spinal cord towards the brain, which then transmits and processes information. ...
It is known that in humans, as in all vertebrates, the central and
It is known that in humans, as in all vertebrates, the central and

... It is known that in humans, as in all vertebrates, the central and peripheral nervous systems play essential roles in the transmission and assimilation of the information of our environment. This information is processed through neuronal synaptic communications, mediated by excitatory and inhibitory ...
Neuron Teacher Key 5-17-16
Neuron Teacher Key 5-17-16

... which are poor conductors of electrical current and provide good insulation. _______________________________________________________________________ 11. Label the neuron, oligodendrocyte, and Schwann cell. ...
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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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