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... System • STRUCTURES: brain, spinal cord, & peripheral nerves • FUNCTION: Recognizes and coordinates the body’s response to changes in its internal and external environments ...
notes - Other Places you want to go
notes - Other Places you want to go

... 1. Neurons pass signals to other neurons 2. Neurons pass signals to muscle or gland cells 3. Neurons receive signals, process the information, and send out new signals to other neurons Neurotransmitter – chemicals that travel across the synapse, transmitting a signal from the end of an axon to the r ...
The Nervous System
The Nervous System

... to each other by small gaps or spaces called SYNAPSES Nerve impulses are carried across the synapses by chemicals called ...
3.E.2 Nervous System - kromko
3.E.2 Nervous System - kromko

... Axons conduct signals away from the cell body. Axons can be as long as many meters in large vertebrates. A “nerve” is a bundle of axons. ...
Health - Nervous System Review
Health - Nervous System Review

... 5. Nervous system that consists of the brain and spinal column 6. Carries messages to your brain and spinal cord from receptors in your skin 8. Special cell in our skin that allows us to sense pressure, heat, cold, and pain 10. Connects the brain to the spinal cord and controls involuntary actions, ...
1 NOTES – CHAPTER 9 (Brief) The Nervous System – LECTURE
1 NOTES – CHAPTER 9 (Brief) The Nervous System – LECTURE

... a) effectors include muscles or glands 2) Efferent fibers/neurons – nerve fibers that transmit action potentials from the CNS toward the periphery 3) Two subdivisions of Efferent division: a) Somatic Motor Nervous System – transmits impulses from CNS to skeletal muscles b) Autonomic Nervous System ( ...
The Nervous System
The Nervous System

... Axons – threadlike extension that carries impulses away from the cell body.  Branches at its end forming terminals, signals are sent to target cells (other neurons, muscle cells, or glands)  Length can vary from ~ mm to > 1 meter  Most are coated (sheath) with myelin (fatty material). Myelin insu ...
Physiolgy of the nervous system
Physiolgy of the nervous system

... This classification is concerned only with PNS or peripheral nervous system, which subdivided into: 1) Somatic (voluntary) nervous system, which controls the skeletal muscle 2) Autonomic (involuntary) nervous system, which controls smooth muscle ...
Neural Tissue - Decker
Neural Tissue - Decker

... Afferent division- brings sensory information to the CNS from receptors in peripheral tissues & organs ...
9.5 & 9.11 PP - Mrs. heninger
9.5 & 9.11 PP - Mrs. heninger

... Real-world connection How drugs interact with the nervous system. Vocabulary nerve pathways, synapse, synaptic cleft, synaptic transmission, neurotransmitters, resting potential, action potential, reflex arc, receptor, sensory neuron, interneuron, motor neuron, effector. ...
NERVOUS SYSTEM REVIEW
NERVOUS SYSTEM REVIEW

... called ________________. ...
Lecture 2 (Neurons)
Lecture 2 (Neurons)

... communicate information quickly by using ionic currents and chemical signals called neurotransmitters. Nerve - Many neurons that are bundled together and covered by a connective tissue sheath. Nervous System – The entire network of interconnecting neurons. ...
Brain Organization or, why everyone should have some
Brain Organization or, why everyone should have some

... say the CNS and the PNS is really about anatomy  Nothing wrong with this, but the distinction is not as much about physiology  Physiologically we can talk about the cranial nervous system and the spinal nervous system ...
Power Point CH 14
Power Point CH 14

... to the CNS 2. Processing and evaluating information—CNS determines what, if any, response is required 3. Responding to information—CNS initiates specific nerve impulses, called motor output, to effectors (muscles or glands) to react to changes in the body’s ...
14.1 Nervous Control notes - Mr Cartlidge`s Saigon Science Blog
14.1 Nervous Control notes - Mr Cartlidge`s Saigon Science Blog

... – the central nervous system consisting of brain and spinal cord – the peripheral nervous system – coordination and regulation of body functions  The human nervous system is made of two parts-central nervous system (CNS) and peripheral nervous system(PNS);  CNS - brain and spinal cord, which have ...
Day 4 - Scott County Schools
Day 4 - Scott County Schools

... shape that lets it pass electrical signals to and from other cells. A neuron has three main parts: cell body, dendrites, and axon. The cell body contains the nucleus and other organelles that carry out basic cellular processes. Dendrites receive nerve impulses from other cells. A single neuron may h ...
Respiratory System
Respiratory System

... ◦ Eyes, ears, nose, tongue, skin ...
Overview Functions of the Nervous System
Overview Functions of the Nervous System

... • Neuroglia (glial cells) = supporting cells – Provide a supporting scaffolding for neurons – Help connections form – Promote neuron health and growth – In the CNS they provide the basis for the blood brain barrier – Segregate and insulate neuronal processes • speed up action potential conduction (i ...
Central Nervous System
Central Nervous System

... • Neuron cell bodies and axons are insulated from their surroundings by processes of glial cells: - satellite cells surround cell bodies in peripheral ganglia - every peripheral axon (unmyelinated or myelinated) is covered by Schwann cells or neurolemmocytes - plasmalemma of an axon is called axolem ...
The Nervous System
The Nervous System

... It controls senses, thoughts, movements and bodily functions. ...
Central nervous system
Central nervous system

... pseudo-unipolar cells. As the cell develops, a single process splits into two, both of which function as axons—one going to skin or muscle and another to the spinal cord. ...
Chapter Eleven
Chapter Eleven

... • Usually there is only one unbranched axon per neuron • Rare branches, if present, are called _ • Axonal terminal – branched terminus of an axon ...
The Nervous System: Basic Structure
The Nervous System: Basic Structure

... Peripheral nervous system- branches of nerves that reach other parts of the body ...
Students with Learning Disabilities
Students with Learning Disabilities

... Students with Learning Disabilities Medical Aspects ...
Biological and Psychology Why are psychologists concerned about
Biological and Psychology Why are psychologists concerned about

...  Approximately 100 billion neurons and 10 trillion connections  Speeds up to 330 miles per hour  Glia Cells: Provide support and nutrition  Over 200 types of neurons and glia cells Common Features of Neurons  Dendrites  Cell body or soma  Axon  Myelin sheath  Terminal buttons Synapse - a ju ...
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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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