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File - Dr. Jerry Cronin
File - Dr. Jerry Cronin

... Auditory tube ...
HBNervous
HBNervous

... 3. high metabolic rate - require OXYGEN and GLUCOSE at all times Dendrites are plasmamembrane extentions; this is the sensing end Cell body contains all organelles including nucleus with genetic information that directs synthesis. Dendritic end surrounds cell body. Axon is elongated region terminate ...
Biology 3201 - Corner Brook Regional High
Biology 3201 - Corner Brook Regional High

... Multiple Sclerosis (MS) • Believed to be an autoimmune disorder where the body attacks and breaks down or inflames the myelin sheath. • It is a progressive disorder that currently has no cure. However new treatments have been shown effective in slowing the progression and dealing with symptoms. • S ...
Nervous System - cloudfront.net
Nervous System - cloudfront.net

... nervous system allows us to think, evaluate, and remember information. The most important part of the nervous system is the neuron or nerve cell. There are three functions of the nervous system: sensory input, integration, and motor input.  sensory input– When the eyes see something or hands touch ...
the pain process
the pain process

... (slow) fibers that cause the secondary dull, throbbing pain, and A-beta (tactile) fibers , which have a lower threshold of stimulation. Transmission can be reduced by local anesthetics and alpha-2 agonists. Modulation occurs when first-order neurons synapse with second-order neurons in the dorsal ho ...
Nervous System
Nervous System

... Messages about your environment travel through the nervous system called neurons. A neuron is a nerve cell that is specialized to transfer messages in the form of fast-moving electrical energy. These electrical messages are called impulses. A neuron has a large region in the center called the cel ...
vocabulary worksheet
vocabulary worksheet

... 12. __________________________ are chemicals found in the synaptic vesicles which, when released, has an effect on the next cell. 13. The ______________________ neurotransmitter causes the receiving cell to fire. 14. The __________________ _______________ a long bundle of neurons that carries messag ...
Neurons and synapses..
Neurons and synapses..

... When the doctor taps the right spot on your knee with a rubber hammer, receptors send a signal into the spinal cord through a sensory neuron. The sensory neuron passes the message to a motor neuron that controls your leg muscles. Nerve impulses travel down the motor neuron and stimulate the appropri ...
Final Exam Review Part II 1) The entire nervous system is divided
Final Exam Review Part II 1) The entire nervous system is divided

... 42) Which of the following characteristics is the same for the nervous and endocrine systems: a) target cells affected b) time to onset of actions c) duration of actions d) mechanism of signalling and communication e) none of the above 43. Why do hormones cause changes only in specific body organs? ...
Nervous System - Academic Computer Center
Nervous System - Academic Computer Center

... There are two main types of neurotransmitter receptors: channel-linked receptors mediate direct transmitter action and result in brief, localized changes; and G proteinlinked receptors mediate indirect transmitter action resulting in slow, persistent, and ...
Neuron-target interaction 1. Synapse formation between presynaptic
Neuron-target interaction 1. Synapse formation between presynaptic

... Neuron-target interaction 1. Synapse formation between presynaptic and postsynaptic cells synaptogenesis in neuromuscular junction (NMJ) Central synapses form in a similar manner as in NMJ. synapse elimination- A large number of synapses eliminated. Proposed model: Active axon triggers the generatio ...
ANATOMY NEURO REVALIDA QUESTIONS
ANATOMY NEURO REVALIDA QUESTIONS

... What are the lobes of the cerebrum & give their functions. In times of stress/fear, explain what happens to the autonomic nervous system What are the types of aphasia? Differentiate I pricked my finger. Explain how the neurologic system reacts in this situation by tracing the travel of impulses What ...
Development
Development

... Parkinson’s Disease • Due to loss of substantia nigra dopamine neurons. • Common in people over 80. • Treated with L-dopa, DA transplants, or DA receptor agonists. • 5-10% early-onset familial: several genes identified (alpha-synuclein, parkin) • 90% sporadic: pesticides and MPTP. • Mitochondria an ...
Chapter 13 Spinal Cord
Chapter 13 Spinal Cord

... • Nocicceptors = pain receptors • Free nerve endings found in every tissue of body except the brain • Stimulated by excessive distension, muscle spasm & ischemia • Tissue injury releases chemicals such as kinins, or prostaglandins • Little adaptation occurs ...
Control and Coordination -Organ systems
Control and Coordination -Organ systems

... the connection (gap) between the terminal knob of one axon and the dendrite of an adjacent neuron ...
spinal cord
spinal cord

... control and coordination of life functions and activities 2 systems involved: 1. nervous- electrical system, brain,spine and nerves found in multicellular organisms 2. endocrine- chemical system, hormones found in all organisms Nervous System: definitions: a. stimulus- change in the internal or ex ...
Rubin, 2007
Rubin, 2007

... Following on the ideas of du Bois-Reymond, many prominent neuroscientists of the day—including John Eccles, Lorente de Nó, Herbert Gasser, and Ralph Gerard— believed that neurons communicated electrically. They thought that the actions of chemicals were too slow to mediate the rapid effects of neuro ...
Neurons - cloudfront.net
Neurons - cloudfront.net

... Long axons called nerve fibers Occasional branches (axon collaterals) Branches profusely at end (terminus) Can be 10,000 terminal branches Distal endings called axon terminals or ...
The nervous system
The nervous system

... Adrenalin raises glucose levels Parasympathetic: ...
HISTOLOGY REVISIT: NEURONS AND NEUROGLIA LEARNING
HISTOLOGY REVISIT: NEURONS AND NEUROGLIA LEARNING

... Afferent processes of neurons Have primary secondary and tertiary branches. Contains all the components of perikayon except golgi apparatus Nissal substance restricted to main stem Outer surface shows numerous small spines or knobbed out growths called gemmules these are sites of synaptic contacts. ...
6.5 Neurons and Synapses - Mr Cartlidge`s Saigon Science Blog
6.5 Neurons and Synapses - Mr Cartlidge`s Saigon Science Blog

... An action potential consists of depolarization and repolarization of the neuron. Nerve impulses are action potentials propagated along the axons of neurons. Propagation of nerve impulses is the result of local currents that cause each successive part of the axon to reach the threshold potential. Syn ...
Assignment 2 - Gordon State College
Assignment 2 - Gordon State College

... Review & Extra Credit: Brain and Nervous System Introduction to Psychology Name __________________________________ These questions can be answered from your textbook, class notes, and/or lecture slides. Complete this sheet and turn it in for 5 points extra credit on Test 1. It will not be graded but ...
Do Now 03/03-04 - Ed White Anatomy and Physiology
Do Now 03/03-04 - Ed White Anatomy and Physiology

... O Complete the following worksheet to practice ...
Instructions to Surgeons: Nerve and Muscle Biopsies
Instructions to Surgeons: Nerve and Muscle Biopsies

... Generally, a muscle biopsy of the gastrocnemius should be performed at the same time if the sural nerve biopsy is being performed to assess for vasculitis or amyloid. We would prefer that the surgeon obtain two centimeters of nerve. If the surgeon can only obtain 1 cm of nerve, then teased fibers wi ...
Chapter 1: Concepts and Methods in Biology - Rose
Chapter 1: Concepts and Methods in Biology - Rose

... a. Central nervous system (CNS)–brain and spinal cord b. Peripheral nervous system (PNS)–sensory and motor neurons that connect to CNS c. Nerve–ropelike bundles of neuronal axons 3. Motor output–requires effector cells (muscle and gland cells) C. Cells of the nervous system 1. Neurons–functional uni ...
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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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