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Chemical Communication PowerPoint
Chemical Communication PowerPoint

... Terminal button - Enlarged area at the axon terminal Synaptic vesicles - Sacs in the terminal button that release chemicals called neurotransmitters into the synaptic space Synaptic space (synaptic cleft) - Tiny gap between neurons Receptor sites - Location on receptor neuron where neurotransmitters ...
Nervous System - Cloudfront.net
Nervous System - Cloudfront.net

...  Basic unit of structure and function B. Tissues  Group of cells that perform a single function (e.g. epithelial, connective, nervous, muscle) C. Organs  Different types of tissues that work together to perform a closely related function (e.g. eye, liver, lungs) D. Organ Systems  Group of organs ...
The Nervous System Part I
The Nervous System Part I

... • Structural units of the nervous system • Plasma membrane functions in electrical signaling • Composed of: • body - contains nucleus & other organelles • axon - conducts nerve signals • dendrites - receive signals from sensory receptors or other neurons ...
Lecture-20-2013-Bi
Lecture-20-2013-Bi

... The ‘mapping’ of these compounds probably occurs by matching to memory templates stored in the brain; thus, a smell is categorized based on one’s previous experiences of it and on the other sensory stimuli that correlate with its appearance. ...
Rubin, 2007
Rubin, 2007

... any neurotransmitter, its transporters, or its receptors could be at the root of neuropsychiatric disease, and that targeting these elements could be the basis of therapy. Bloom noted that “I might have that tattooed on my chest because it is the credo that I have lived by throughout my career.” Lat ...
A táplálékfelvétel, a só- és vízháztartás neuroanatómiája
A táplálékfelvétel, a só- és vízháztartás neuroanatómiája

... - urocortin III. neurons are located in the dorsomedial hypothalamus with ventromedial projections - urocortin III. neurons here co-express enkephalin - neurons here contain leptin receptors (Ob-Rb receptors) - neurons here are activated by leptin (c-fos expression) - urocortin III. acts on CRH2 rec ...
Why light
Why light

... The places were neurotransmitter substances get “dumped” and then have the potential to activate other neurons are called synapses. The word, synapse, means, roughly, neural gap. It is also used as a verb – meaning to connect with, neurally. “He went out last night and synapsed with some of his frie ...
Sensing the Environment
Sensing the Environment

... Neurons are commonly connected to many other neurons, and the effect of the different incoming signals determines what the neuron will do. ...
Figure 3. - Tech in the Classroom Wiki
Figure 3. - Tech in the Classroom Wiki

... etiology of which is widely unknown. The most common form of antidepressant medications include the selective-serotonin reuptake inhibitors (SSRIs), which increase synaptic serotonin levels. The synaptic effects of these drugs are immediate but the therapeutic effects are not experienced for several ...
GABA suppresses neurogenesis in the adult
GABA suppresses neurogenesis in the adult

... axonal versus dendritic distribution, respectively, and accordingly they mediate distinct synaptic functions (Pérez-Garci et al., 2006; Vigot et al., 2006). GABAB receptors regulate neuronal excitability controlling the activity of voltage-gated calcium channels and inward-rectifying potassium chann ...
The Chemical Senses: Smell and Taste How does the nose and
The Chemical Senses: Smell and Taste How does the nose and

... There are animals without vision, and there are some without hearing, but there are no animals without some form of chemical sense. Humans have about 9 million olfactory neurons, whereas there are 225 million olfactory neurons in dogs. Dogs and many other species can detect pheromones (chemicals re ...
NERVOUS TISSUE
NERVOUS TISSUE

... Department of histology, cytology and embryology ...
Neural Networks.Chap..
Neural Networks.Chap..

... Sometimes, the activation function ranges from -1 to +1. (How to do?) Assume the activation function ranging from 0 to +1 is denoted as j(×), ranging from -1 to +1 is denoted as j’(×)  j’(×)=j(×)*2-1 Notes: if j(v)=sigmoid function ...
nervous system - Zanichelli online per la scuola
nervous system - Zanichelli online per la scuola

... • motor neurons generate responses to stimuli, sending signals to muscles or glands; • interneurons are located in the brain and in the spinal cord, they receive information from other neurons. ...
Exam - McLoon Lab
Exam - McLoon Lab

Somatosensory system.
Somatosensory system.

... • Because of their location in the skin and the nature of their specialisations, different encapsulated receptor types have different forms of cutaneous sensitivity • This was first discovered not by looking at receptors themselves but by recording from single CUTANEOUS AFFERENT FIBRES (can be done ...
Chapter 11: Fundamentals of the Nervous System and Nervous Tissue
Chapter 11: Fundamentals of the Nervous System and Nervous Tissue

... ______6. A major subdivision of the nervous system that serves as the communication lines, linking all parts of the body to the CNS. 3. This exercise emphasizes the difference between neurons and neuroglia. Indicate which cell type is identified by the following descriptions. A. Neurons B. Neuroglia ...
to find the lecture notes for lecture 6 nervous tissue click here
to find the lecture notes for lecture 6 nervous tissue click here

... -nerve cells have more K+ than Na+ leakage channels -as a result, membrane permeability to K+ is higher -K+ leaks out of cell - inside becomes more negative -K+ is then pumped back in 2. Gated channels: open and close in response to a stimulus A. voltage-gated: open in response to change in voltage ...
Bi150 (2005)
Bi150 (2005)

... •The ‘mapping’ of these compounds probably occurs by matching to memory templates stored in the brain • A smell is categorized based on one’s previous experiences of it and on the other sensory stimuli correlated with its appearance. ...
Document
Document

... Simultaneous inhibition of other motor neurons with axons projecting caudally relaxes downstream circular muscle FOOD DISTENSION ...
Chapter 14
Chapter 14

... How does sensation occur? 1. Sensory receptors respond to environmental stimuli 2. Nerve impulses travel to cerebral cortex 3. Sensation (conscious perception) of stimuli occurs 4. Sensory adaptation, decrease in stimulus response, can occur with repetitive stimuli (i.e. odor) – Two Possible Pathwa ...
SOMATOSENSORY SYSTEMS
SOMATOSENSORY SYSTEMS

... A: Receptive fields. Size and locations of the receptive fields of 15 sensory units, determined by recording from the median nerve. All of these sensory units were rapidly adapting and were most likely conducting from Meissner-corpuscles. Within each receptive fields there are many Meissner corpuscl ...
peripheral nervous system
peripheral nervous system

... impulses from CNS to effectors (muscles and glands) -Interneurons (association neurons) provide more complex reflexes and associative functions (learning and memory) ...
presentation
presentation

... Ø precisely-timed output spikes and more resilient to input jitter ...
DRUGS AND BEHAVIOR WEEK 1 Psychoactive drugs are
DRUGS AND BEHAVIOR WEEK 1 Psychoactive drugs are

... There are about 100 billion neurons in the human brain, each of which typically has thousands of connections with other neurons, making for literally trillions of connections. We’ve got a long way to go before we can claim to have a thorough understanding of such a complex system, but in recent year ...
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Endocannabinoid system

The endocannabinoid system is a group of neuromodulatory lipids and their receptors in the brain that are involved in a variety of physiological processes including appetite, pain-sensation, mood, and memory; it mediates the psychoactive effects of cannabis and, broadly speaking, includes: The endogenous arachidonate-based lipids, anandamide (N-arachidonoylethanolamide, AEA) and 2-arachidonoylglycerol (2-AG); these are known as ""endocannabinoids"" and are physiological ligands for the cannabinoid receptors. Endocannabinoids are all eicosanoids. The enzymes that synthesize and degrade the endocannabinoids, such as fatty acid amide hydrolase or monoacylglycerol lipase. The cannabinoid receptors CB1 and CB2, two G protein-coupled receptors that are located in the central and peripheral nervous systems.The neurons, neural pathways, and other cells where these molecules, enzymes, and one or both cannabinoid receptor types are all colocalized form the endocannabinoid system.The endocannabinoid system has been studied using genetic and pharmacological methods. These studies have revealed that cannabinoids act as neuromodulators for a variety of processes, including motor learning, appetite, and pain sensation, among other cognitive and physical processes. The localization of the CB1 receptor in the endocannabinoid system has a very large degree of overlap with the orexinergic projection system, which mediates many of the same functions, both physical and cognitive. Moreover, CB1 is colocalized on orexin projection neurons in the lateral hypothalamus and many output structures of the orexin system, where the CB1 and orexin receptor 1 (OX1) receptors physically and functionally join together to form the CB1–OX1 receptor heterodimer.
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