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Bio 103 Lecture Outline:
Bio 103 Lecture Outline:

... - produce ___________ - control certain muscular activities primarily by inhibiting motor ...
chapter32_part2shorter
chapter32_part2shorter

... framework for neurons, insulate neuron axons, assist neurons metabolically, and protect the brain from injury and disease. • Because neuroglia have essential roles in assisting neurons, diseases that impair neuroglia impair the function of the nervous system. • Unlike neurons, most types of neurogli ...
Skeletal, Muscular, & Nervous System
Skeletal, Muscular, & Nervous System

... Cell body – the cell body of a neuron contains the nucleus, the control center of the cell Neuron cells have limited ability to repair damage or replace destroyed cells ...
Presentazione di PowerPoint
Presentazione di PowerPoint

... protein synthesis and, eventually, gene expression (not shown). Surface expression and function of NMDARs and AMPARs is dynamically regulated by protein synthesis and degradation and receptor trafficking between the postsynaptic membrane and endosomes. The insertion and removal of postsynaptic recep ...
Biology 30 NERVOUS SYSTEM
Biology 30 NERVOUS SYSTEM

... 2. the frequency at which the neurons fire 3. the threshold level of different neurons (lower threshold neurons are more likely to fire, and are found in more “sensitive” ...
Intr to NS 2015
Intr to NS 2015

... than one way , depending on the purpose of the study undertaken .  appreciate that animal experiments are essential for advancement of knowledge about nervous system functions  understand that , under strict ethical considerations , human studies are also carried out to understand neurophysiology ...
File
File

...  A new message is sent in return  There is an action Where is this happening? ...
The Peripheral Nervous System
The Peripheral Nervous System

... Nervous tissue: Excitable cells (neurons) Nonexcitable (supporting) cells Connective tissue: Meninges in central nervous system Endoneurium Perineurium in peripheral nervous system Epineurium Epithelium found only in blood vessels of PNS Muscle (smooth) ...
OTTO LOEWI
OTTO LOEWI

... idea that the transmission should be electrical, just like the propagation wave along the axon. It was actually making sense to imagine electrical synapses. Unfortunately there were three important arguments against such simple picture of the nervous system. The first is the unidirectional flow of i ...
Motor Neurons
Motor Neurons

... Neurotransmitters  chemical messengers that travel across the synaptic gaps between neurons  when released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether it will generate a neural impulse ...
Neurological Systemppt
Neurological Systemppt

... • Has a nucleus, cytoplasm, and cell membrane • .Nucleus- “brain’ for control of cell’s metabolic activities and cell division • .Mitochondrion-site of cellular respiration, and energy production, stores ATP. ...
Endocrine and nervous system
Endocrine and nervous system

... 2. Dendrites: receives impulses to cell body (fingers) 3. Axon: carries impulses away from cell body (arm) 4. Axon Terminal: where impulses leave the neuron, contains chemical-filled vesicles (neurotransmitters) ...
Nervous System Lecture- Part II
Nervous System Lecture- Part II

... The amount of cortical space dedicated to that body region is proportional to the number of sensory receptors located in that body region. This is the sensory homunculus Motor Homunculus Corticospinal pathway provides voluntary control over skeletal muscles. Neurons in primary motor cortex (pre-cent ...
Nervous System Notes
Nervous System Notes

... across synapse • Neurotransmitter binds with specific receptors on the next neuron ...
Facial nerve
Facial nerve

... • Exception: Acute Otitis Media (AOM) ...
The Nervous System
The Nervous System

... that transmit the nerve impulses across a synaptic cleft.  Synaptic Vesicles: contain the neurotransmitters. Contained near surface of synaptic endings.  Acetylcholine (Ach), Noradrenalin (NA), Serotonin, Adrenalin (epinephrine) are some important neurotransmitters.  Transmission across a synapse ...
learning objectives for nervous tissue and nervous system
learning objectives for nervous tissue and nervous system

... 8. What are four generalizations that can be made about cerebral cortex functions? 9. Where are the cortical areas controlling motor functions? Describe basic function of primary (somatic) motor area, premotor cortex, and Broca's area. 10. Where are the general areas controlling sensation? Describe ...
Unit 3 PowerPoint notes
Unit 3 PowerPoint notes

... = a layer of fatty tissue segmentally encasing the axons of some neurons; enables vastly greater transmission speed as neural impulses hop from one sausage-like node to the next. ...
Chapter 49 Worksheet: Nervous Systems The Evolution and
Chapter 49 Worksheet: Nervous Systems The Evolution and

... 3. Distinguish between the functions of the autonomic nervous system and the somatic nervous system. The function of the automatic nervous system is regulation of the internal environment by generally involuntary controlling of smooth and cardiac muscles and organs of the digestive, cardiovascular, ...
The Cerebral Cortex
The Cerebral Cortex

... (1)A stimulus from a sensory cell or another neuron causes the target cell to depolarize toward the threshold potential. (2) If the threshold is reached, all Na+ channels open and the ...
Chapter 2 - bobcat
Chapter 2 - bobcat

... How do neurons communicate? • Electrical impulses (action potentials) travel from one neuron to another across the synapse. When axon reaches axon terminal, it stimulates the release of neurotransmitter molecules from sacs called vesicles. The molecules cross the synaptic gap and bind to the recept ...
HUMAN PHYSIOLOGY
HUMAN PHYSIOLOGY

... I. The amino acids glutamate and aspartate are excitatory in the CNS. A. The subclass of glutamate receptor designated as NMDA receptors are implicated in learning and memory. B. The amino acids glycine and GABA are inhibitory. They produce hyperpolarizations, causing IPSPs, by opening Cl- channels. ...
intro to psych brain and behavior
intro to psych brain and behavior

... An action potential (nerve impulse) sweeps down the axon Ion channels open and sodium ions rush in ...
spinal cord - Dr Magrann
spinal cord - Dr Magrann

... The spinal nerves come out of the spine, and the cranial nerves come out of the brain directly. There are 12 pairs. They are numbered with Roman numerals. I. OLFACTORY nerves transmit the sense of smell. Outside of the CNS they are called olfactory nerves, and inside of the CNS they are called the o ...
UNIT 3
UNIT 3

... These action potentials are the language of the nervous system. For example, how does your brain know if you have a light object in your hand or a heavy object? In a situation like this, special receptors detect the pressure on the skin and send action potentials to the brain. The weight of the obje ...
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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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