Investigating the organization, assembly and physical properties of
... (SQDG and PG) provide charged groups. We will systematically vary the relative ratios of each lipid and characterize how this affects the system, as follows. The lipid bilayer surface structure will be visualized with atomic force microscopy at high spatial resolution (subnanometer), revealing phase ...
... (SQDG and PG) provide charged groups. We will systematically vary the relative ratios of each lipid and characterize how this affects the system, as follows. The lipid bilayer surface structure will be visualized with atomic force microscopy at high spatial resolution (subnanometer), revealing phase ...
Neural Communication
... THESE IONS INTERACT WITH THE NEURON ACROSS THE NEURAL MEMBRANE (THE BOUNDARY AND SELECTIVE BARRIER OF THE NEURON). • ACTION POTENTIALS THEN SEND INFORMATION DOWN THE AXON, AWAY FROM THE CELL BODY (ON AN EEG YOU SEE A SPIKE). THEY MOVE 500FEET/SECOND. THIS ENDS AT THE AXON TERMINALS BECAUSE THERE IS ...
... THESE IONS INTERACT WITH THE NEURON ACROSS THE NEURAL MEMBRANE (THE BOUNDARY AND SELECTIVE BARRIER OF THE NEURON). • ACTION POTENTIALS THEN SEND INFORMATION DOWN THE AXON, AWAY FROM THE CELL BODY (ON AN EEG YOU SEE A SPIKE). THEY MOVE 500FEET/SECOND. THIS ENDS AT THE AXON TERMINALS BECAUSE THERE IS ...
Nerve activates contraction
... During repolarization, potassium ions rush out of the neuron which repolarizes the membrane charge During the refractory period, the Na/K pump restores the original ion balance This action requires ATP - Neuron cannot conduct again until this happens Copyright © 2003 Pearson Education, Inc. pu ...
... During repolarization, potassium ions rush out of the neuron which repolarizes the membrane charge During the refractory period, the Na/K pump restores the original ion balance This action requires ATP - Neuron cannot conduct again until this happens Copyright © 2003 Pearson Education, Inc. pu ...
Glial inhibition of CNS axon regeneration
... a peripheral nerve graft6. Furthermore, neurons such as those in dorsal root ganglia (DRG) have axons in both the CNS and PNS, but can only regenerate their peripheral processes. These observations suggest that interactions with different environments contribute to the differential regenerative resp ...
... a peripheral nerve graft6. Furthermore, neurons such as those in dorsal root ganglia (DRG) have axons in both the CNS and PNS, but can only regenerate their peripheral processes. These observations suggest that interactions with different environments contribute to the differential regenerative resp ...
W7 Lecture
... scenario (a) generates a burst of action potentials as the muscle is lengthened; in scenario (b), the shortened spindle produces fewer action potentials from the spindle. ...
... scenario (a) generates a burst of action potentials as the muscle is lengthened; in scenario (b), the shortened spindle produces fewer action potentials from the spindle. ...
Pathfinding in Computer Games 1 Introduction
... in order to cut down the search space of the game world for the pathfinder the games map is broken down and simplified. The pathfinder then uses this simplified representation of the map to determine the best path from the starting point to the desired destination in the map. The most common forms o ...
... in order to cut down the search space of the game world for the pathfinder the games map is broken down and simplified. The pathfinder then uses this simplified representation of the map to determine the best path from the starting point to the desired destination in the map. The most common forms o ...
Neuromuscular junctions
... • Many candidates believe that it is the calcium that moves tropomyosin – it isn’t 14 This exposes myosin binding sites on actin molecules / thin filaments 15 The calcium ions activate myosin which releases ATPase to split ATP from mitochondria into ADP and Pi 16 This energy is used to move the head ...
... • Many candidates believe that it is the calcium that moves tropomyosin – it isn’t 14 This exposes myosin binding sites on actin molecules / thin filaments 15 The calcium ions activate myosin which releases ATPase to split ATP from mitochondria into ADP and Pi 16 This energy is used to move the head ...
A4a - Viktor`s Notes for the Neurosurgery Resident
... minimum time for transmission across one synapse is 0.5 ms (SYNAPTIC DELAY) - time it takes for mediator to be released and to act on postsynaptic membrane. conduction along chain of neurons is slower if there are more synapses in chain. ...
... minimum time for transmission across one synapse is 0.5 ms (SYNAPTIC DELAY) - time it takes for mediator to be released and to act on postsynaptic membrane. conduction along chain of neurons is slower if there are more synapses in chain. ...
Lecture 1 st week
... - Terminal end branches into numerous synaptic boutons - Allows one neuron to make many contacts ...
... - Terminal end branches into numerous synaptic boutons - Allows one neuron to make many contacts ...
Biochemistry of cell organelles
... • Overall structure of mitochondria, their shape and size; • Origin of mitochondria; • Dynamic behaviour of mitochondria; • Composition of mitochondria, functional role of different subcompartments; • Isolation of mitochondria, how to analyse the composition of mitochondria; • Visualization (imaging ...
... • Overall structure of mitochondria, their shape and size; • Origin of mitochondria; • Dynamic behaviour of mitochondria; • Composition of mitochondria, functional role of different subcompartments; • Isolation of mitochondria, how to analyse the composition of mitochondria; • Visualization (imaging ...
Targeting cell surface receptors for axon regeneration in the central
... the presence of a specific integrin subunit for correct ligand binding, the study was also one of the first to show that integrin manipulation in adult neurons can promote successful neurite outgrowth. Although successful peripheral nerve regeneration after injury is correlated with an upregulation ...
... the presence of a specific integrin subunit for correct ligand binding, the study was also one of the first to show that integrin manipulation in adult neurons can promote successful neurite outgrowth. Although successful peripheral nerve regeneration after injury is correlated with an upregulation ...
Chapter 13 PowerPoint - Hillsborough Community College
... • Mature neurons are amitotic, but if the soma (cell body) of the damaged nerve is intact, the peripheral axon may regenerate in PNS; does not occur in CNS ...
... • Mature neurons are amitotic, but if the soma (cell body) of the damaged nerve is intact, the peripheral axon may regenerate in PNS; does not occur in CNS ...
action potential — epilepsy
... many cortical neurons are excited simultaneously. What originally causes epilepsy is unknown. It is known that epilepsy can be related to damage to the CNS before, during, or just after birth; to head injuries that can occur at any age; to some poisons (including lead and alcohol); diseases (such as ...
... many cortical neurons are excited simultaneously. What originally causes epilepsy is unknown. It is known that epilepsy can be related to damage to the CNS before, during, or just after birth; to head injuries that can occur at any age; to some poisons (including lead and alcohol); diseases (such as ...
Dynamic properties of a reconstituted myelin sheath
... lipid interactions and lipid-based membrane microdomains also have a role in the etiology of MS and PN. Detailed knowledge of the fine structure and dynamics of myelin at the level of lateral membrane domain composition, and lipid–protein interactions within such domains, is imperative for understan ...
... lipid interactions and lipid-based membrane microdomains also have a role in the etiology of MS and PN. Detailed knowledge of the fine structure and dynamics of myelin at the level of lateral membrane domain composition, and lipid–protein interactions within such domains, is imperative for understan ...
Feedback — Exam
... different from each other in: Select all the correct answers (could be more than one) Different cell types have a different DNA sequence By their target output and by their synaptic effect (e.g., inhibitory/excitatory) Different cells have significantly different spike shape Their electrical charact ...
... different from each other in: Select all the correct answers (could be more than one) Different cell types have a different DNA sequence By their target output and by their synaptic effect (e.g., inhibitory/excitatory) Different cells have significantly different spike shape Their electrical charact ...
IONIC BASES OF THE RESTING MEMBRANE POTENTIAL
... The intrinsic proteins are buried or interposed within the lipids of the membrane (from which they may extend into intracellular or extracellular space), thus the structure of the membrane is termed a fluid mosaic. These proteins fulfill many different functions including serving as receptors or rec ...
... The intrinsic proteins are buried or interposed within the lipids of the membrane (from which they may extend into intracellular or extracellular space), thus the structure of the membrane is termed a fluid mosaic. These proteins fulfill many different functions including serving as receptors or rec ...
AQA Biology: Energy transfers and changes in
... 11 The number/concentration of sodium ions that must enter/degree of depolarisation of the neurone necessary to set up an action potential. 12a If several action potentials arrive in a very short time at the synapse; their effects may ‘add up’ to cause an action potential in the postsynaptic neurone ...
... 11 The number/concentration of sodium ions that must enter/degree of depolarisation of the neurone necessary to set up an action potential. 12a If several action potentials arrive in a very short time at the synapse; their effects may ‘add up’ to cause an action potential in the postsynaptic neurone ...
Sample Chapter
... the resting potential (typically –70 mV) to some positive value (typically about +30 mV) in a very short period of time (just a few milliseconds). What causes this change in potential to occur? The stimulus causes the sodium gates (or channels) to open and, because there is more sodium on the outsid ...
... the resting potential (typically –70 mV) to some positive value (typically about +30 mV) in a very short period of time (just a few milliseconds). What causes this change in potential to occur? The stimulus causes the sodium gates (or channels) to open and, because there is more sodium on the outsid ...
b. choroid coat
... The pharyngotympanic tube connects the throat with which part of the ear? a. External ear b. Middle ear c. Internal ear d. Cochlear duct BACK TO GAME ...
... The pharyngotympanic tube connects the throat with which part of the ear? a. External ear b. Middle ear c. Internal ear d. Cochlear duct BACK TO GAME ...
Inflammation near the Nerve Cell Body
... Division of Neurosurgery, Montreal General Hospital and McGill University, Montreal, Quebec, Canada H3G lA4 ...
... Division of Neurosurgery, Montreal General Hospital and McGill University, Montreal, Quebec, Canada H3G lA4 ...
Spinal Cord and the Peripheral Nervous System
... amount of force and movement (they are sensory). Proprioception neurons travel up the spinocerebellar tract. The brain can then interpret whether you are off balance, then send a command to the muscles to contract and straighten yourself up so you don’t fall. Note that this sense of balance is N ...
... amount of force and movement (they are sensory). Proprioception neurons travel up the spinocerebellar tract. The brain can then interpret whether you are off balance, then send a command to the muscles to contract and straighten yourself up so you don’t fall. Note that this sense of balance is N ...
Node of Ranvier
The nodes of Ranvier also known as myelin sheath gaps, are the gaps (approximately 1 micrometer in length) formed between the myelin sheaths generated by different cells. A myelin sheath is a many-layered coating, largely composed of a fatty substance called myelin, that wraps around the axon of a neuron and very efficiently insulates it. At nodes of Ranvier, the axonal membrane is uninsulated and, therefore, capable of generating electrical activity.