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No Slide Title
No Slide Title

... – axoplasm – cytoplasm of axon – axolemma – plasma membrane of axon – only one axon per neuron – Schwann cells and myelin sheath enclose axon – distal end, axon has terminal arborization – extensive complex of fine branches • synaptic knob (terminal button) – little swelling that forms a junction (s ...
Neurons and Neurotransmission with Nerve slides
Neurons and Neurotransmission with Nerve slides

... energy into action potentials that the nervous system can process •Receptor cells in the eye turn light into a neural impulse the brain understands. ...
medical student anti.. - University of Illinois at Chicago
medical student anti.. - University of Illinois at Chicago

... Temporary Situations:  “Lead-In” combinations - typicals supposedly having more rapid action during acute emergency)  “Top-Up” combinations - addition of typical to overcome acute exacerbation ...
Autophosphorylation Activity of the Arabidopsis Ethylene Receptor
Autophosphorylation Activity of the Arabidopsis Ethylene Receptor

... termed phosphorelays. In these pathways the receptors are often hybrid proteins containing a receiver domain at the carboxyl terminus of their kinase domain. After autophosphorylation of the histidine residue in the kinase domain, the phosphoryl group is transferred intra-molecularly to the receiver ...
BECOMING AWARE OF THE WORLD AROUND US
BECOMING AWARE OF THE WORLD AROUND US

... are termed as deep senses: vestibular and kinesthetic. They help us in maintaining body equilibrium and provide important information about body position and movement of body parts relative to each other. In this section, you will study about the structure and function of different human sense organ ...
CHAPTER 10: NERVOUS SYSTEM I
CHAPTER 10: NERVOUS SYSTEM I

... Explain why the NTs discussed above do not continually stimulate the post-synaptic neuron's membrane. ...
The Somatosensory System: Receptors and Central Pathways
The Somatosensory System: Receptors and Central Pathways

... A second signal, the Aβ wave, appears as more large fibers are recruited. This component corresponds to group II fibers in skin or muscle nerves and becomes larger as the shock intensity is increased. At higher voltages, when axons in the smaller Aδ range are recruited, the stimulus becomes painful, ...
Self Assessment Chapter 11 - CM
Self Assessment Chapter 11 - CM

... • Nervous system performs millions of tasks simultaneously every second; fall into three functional categories: sensory, integrative, or motor: • Sensory functions – gather information about internal and external environments of body; input is gathered by sensory or afferent division of PNS; further ...
Abstract Browser  - The Journal of Neuroscience
Abstract Browser - The Journal of Neuroscience

... phases are represented by three bistable, synapse-specific variables—weight, tagging, and scaffolding—which can be in “low” or “high” states. Depending on its strength and frequency, simulated synaptic activity can cause weight, tagging, and scaffolding variables to switch between low and high state ...
Chapter 15
Chapter 15

... Norepinephrine (NE) • NE is secreted by nearly all sympathetic postganglionic neurons – called adrenergic fibers – receptors for it called adrenergic receptors • alpha-adrenergic receptors – usually excitatory – 2 subclasses use different second messengers (α1 & α2) ...
2.	 Aim	of	the	thesis
2. Aim of the thesis

... using qPCR on cDNA preparations of caudodorsal cells, light green cells, light yellow cells, pedal cluster IB cells or anterior lobe neurons we demonstrated that these neuroendocrine cell populations express distinct subsets of LnAChR subunits. In addition, heterogeneity of LnAChR expression within ...
Axon - Cloudfront.net
Axon - Cloudfront.net

... POTENTIALS (AP).  Only cells with excitable membranes (like muscle cells and neurons) can generate APs. ...
Skeletal System
Skeletal System

... a single pathway to a specific destination In parallel processing, the input travels along several different pathways to be integrated in different CNS regions Each pattern has its advantages The brain derives its power from its ability to process in parallel ...
Biochemistry Objectives 43
Biochemistry Objectives 43

... Cortisol: low levels are maintained during the well-fed state due to the abundance of exogenous glucose; however, during the late post-absorptive state and early starvation, where protein catabolism for gluconeogenesis is necessary, cortisol synthesis and release is stimulated. Cortisol levels drop ...
Snake venom toxicity Usefulness and limitations of antivenom – Dr
Snake venom toxicity Usefulness and limitations of antivenom – Dr

... • The combination of consumption coagulopathy, anticoagulant activity, impaired and few platelets, and vessel wall damage can result in severe bleeding, a common cause of death after bites by Viperidae, Australian Elapidae, and ...
An Olfactory Sensory Map in the Fly Brain
An Olfactory Sensory Map in the Fly Brain

... and Bargmann, 1995; Troemel et al., 1995, 1999). Activation of any one of the multiple receptors expressed in one cell will lead to chemoattraction, whereas activation of a receptor in a different cell results in chemorepulsion (Troemel et al., 1997). Thus, the behavioral response to a specific sens ...
Hypothalamus - aHuman Project
Hypothalamus - aHuman Project

... Sharif Naeini et al. Nat. Neurosci. 9: 93 - 98 (2006) Sharif Naeini et al. Nat. Neurosci. 9: 93 - 98 (2006) AVP = ADH ...
Behavioral Objectives
Behavioral Objectives

... 1. Have students use two marks about 6 inches apart on a piece of paper to demonstrate the blind spot in one eye (caused by the lack of rods and cones where the optic nerve attaches to the retina). Ask them why they have a blind spot in each eye and why they never notice it. Point out that the blind ...
THE PERIPHERAL NERVOUS SYSTEM AND REFLEX ACTIVITY
THE PERIPHERAL NERVOUS SYSTEM AND REFLEX ACTIVITY

... – Meissner’s corpuscles are receptors for discriminatory and light touch in hairless areas of the body – Pacinian, or lamellated, corpuscles, are stimulated when deep pressure is first applied – Ruffini’s corpuscles respond to deep and continuous pressure – Muscle spindles detect when a muscle is be ...
3 state neurons for contextual processing
3 state neurons for contextual processing

... Since NMDA and AMPA pathways have distinct roles in respectively switching and firing our model neuron, we suggest the following conceptual model shown on Fig 3A. Without any input the neuron is at the rest or disabled state. Contextual input (via NMDA receptors) can bring the neuron into an enabled ...
Chapter 15: Neural Integration I: Sensory Pathways and the Somatic
Chapter 15: Neural Integration I: Sensory Pathways and the Somatic

... Two types of axons carry painful sensations: Type A and Type C fibers. 1. Myelinated Type A fibers carry sensations of fast pain, or prickling pain, such as that caused by an injection or deep cut. These sensations reach the CNS very quickly and often trigger somatic reflexes. They are also relayed ...
Final Exam Answers
Final Exam Answers

... A. It is the result of tight junctions between astrocyte foot processes surrounding capillaries. B. A compound’s permeability is directly proportional to its water solubility. C. Addictive compounds generally have specific transport systems. D. All brain areas have a BBB. * E. none of the above 13. ...
Biology 231
Biology 231

... Neurotransmitters – there are many different kinds of neurotransmitters Acetylcholine (ACh) – acts in PNS and CNS excitatory at skeletal muscles – causes contraction inhibitory in the heart – decreases heart rate acetylcholinesterase – enzyme inactivates acetylcholine in synaptic cleft gamma aminobu ...
Lecture #11 Brain and processing
Lecture #11 Brain and processing

...  Several centers in cerebrum, diencephalon, and brain stem may issue somatic motor commands as result of processing performed at subconscious level  These nuclei and tracts are grouped by their primary functions  Components of medial pathway help control gross ...
Drosophila GABA, short neuropeptide F and their receptors
Drosophila GABA, short neuropeptide F and their receptors

... Gustatory and olfactory inputs signal about presence if food and about food quality. However, in order to monitor nutritional needs and maintain homeostasis, the organism utilizes internal cues. For example, there are 20 neurons in the subesophageal ganglion (SOG) that contain the neuropeptide gene ...
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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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