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The Nervous System
The Nervous System

... Describe the structure and function of a neuron, with reference only to cell body, dendrites, axon, myelin sheath, Schwann cell, and neurotransmitter vesicles 5. Give the role and position of three types of neuron: a. sensory neurons - carry messages from the sense organ to the CNS b. motor neurons ...
Review questions: Neuroanatomy
Review questions: Neuroanatomy

... Schwann cells (PNS): Provide myelin sheath in PNS Nodes of Ranvier (PNS): Gaps between Schwann cells on axon. 3. Describe cellular organisation in both the CNS and the PNS. Grey matter: Cluster of neuron bodies in the CNS and unmyelinated fibres. White matter: bundles of myelinated axons in CNS. Nuc ...
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
The Nervous System
The Nervous System

... a chemical called dopamine die or do not work properly. Dopamine normally sends signals that help coordinate your movements. No one knows what damages these cells. Symptoms of Parkinson's disease may include; Trembling of hands, arms, legs, jaw and face, stiffness of the arms, legs and trunk, slowne ...
Neurons, neurotransmitters and other stuff we did last term…
Neurons, neurotransmitters and other stuff we did last term…

... Neurons, neurotransmitters and other stuff we did last term… Psychology 2617 ...
The nervous system
The nervous system

...  Peripheral nervous system (PNS)- the nerves ...
The Nervous System - Marblehead High School
The Nervous System - Marblehead High School

... A nerve will only transmit an impulse if the initial stimulus that is picked up at the dendrites is larger than the threshold Threshold - the lowest level of stimulus that will create an impulse If the stimulus is weaker than threshold NO IMPULSE will be produced ...
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Welcome [www.sciencea2z.com]

... conduct the electrochemical stimulation received from other neural cells to the cell body or soma • Soma – the cell body, contains the nucleus • Axon – long, slender projection of a neuron that conducts electrical impulses away from the soma • Myelin Sheath – electrically insulating layer around the ...
Nervous System Formative Study Guide File
Nervous System Formative Study Guide File

... 1. Identify the “job” of each of the following: a. Motor neurons Motor neurons are efferent nerves (also called effector neurons), that carry signals from the spinal cord to the muscles to produce (effect) movement. b. Sensory neurons Sensory neurons are nerve cells that transmit sensory information ...
Neural and Hormonal Systems Neurons (please label the parts and
Neural and Hormonal Systems Neurons (please label the parts and

... hemispheres of the brains. This is used as a form of treatment for epileptic seizures. ...
Document
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... __A__3. Which of the following is true about a motor neuron? a. Dendrites carry information toward the cell body. b. Dendrites carry information away from the cell body. c. Axons carry information toward the cell body. d. None of the above __C__4. Neurons that have repolarized will have a high conce ...
The Nervous System
The Nervous System

... chemical message to adjacent neurons via Axon/Terminals • Myelin: insulates & protects Axons w/a fatty substance ...
nervous system power point
nervous system power point

... ions are pumped into the cell, making that point more positive on inside this is called depolarization ...
Slide 1
Slide 1

... Functions of the Nervous System ...
Neural Tissue
Neural Tissue

... Cell body or Soma with Perikaryon Dendrites Axon with axon hillock Synaptic terminals ...
Nervous System
Nervous System

... • Dendrites = receive impulses (messages) • Axon = send messages away • Myelin sheath = insulates axon to speed up the message ...
Nervous Tissues
Nervous Tissues

... central spherical nucleus with one or more nucleoli. Cytoplasm contains: Golgi apparatus, mitochondria, lysosomes as well as other common cytoplasmic organelles and inclusions No centriole. ...
Animal Form and Function are Correlated at all levels of organization
Animal Form and Function are Correlated at all levels of organization

... -It consists of scattered cells within an extracellular matrix -Some connective tissues are cartilage, tendons, ligaments, bone, and blood ...
Study Concepts for Exam V - Nervous System
Study Concepts for Exam V - Nervous System

... The different types of nervous system cells and their function The location of ganglia, the number of neurons, the types of targets, and the neurotransmitters involved in all the synapses of the somatic motor, sympathetic, and parasympathetic divisions Sensory pathways that ascend the spinal cord to ...
the nervous system - Fullfrontalanatomy.com
the nervous system - Fullfrontalanatomy.com

... Astrocytes ...
“Definitions” section of your binder Central nervous system
“Definitions” section of your binder Central nervous system

... messages travel to and from the brain Synapse: the gap that exists between individual nerve cells Neurotransmitters: the chemicals released by neurons which determine the rate at which other neurons fire. ...
Introduction to the Nervous System
Introduction to the Nervous System

... b- Interneuron control ...
Parts and Functions of a Nervous System
Parts and Functions of a Nervous System

... Parts and Functions of a Nervous System The nervous system can be divided into two main parts: 1. ________________which includes the brain and spinal cord 2. ________________ which consists of nerves that lie outside the brain and the spinal cord Peripheral nervous system ...
Nervous Systems
Nervous Systems

... Two Main Parts of Vertebrate Nervous Systems • Central nervous system (CNS) – brain and spinal cord – integration ...
Chapter 2: Brain Development
Chapter 2: Brain Development

... • A variety of chemicals signal cells to turn into specialized cells • Ectodermal cells are inhibited by molecules, signalling a development into neural cells and not skin cells • After neural cell determination: ...
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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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