PowerPoint 演示文稿 - Shandong University
... • Different kinds of receptor are activated in different ways but the first stage in sensory transduction is the generation of a graded receptor potential. • The magnitude of the stimulus is related to that of the receptor potential which in turn is related to either a) the sequence or frequency of ...
... • Different kinds of receptor are activated in different ways but the first stage in sensory transduction is the generation of a graded receptor potential. • The magnitude of the stimulus is related to that of the receptor potential which in turn is related to either a) the sequence or frequency of ...
NERVOUS TISSUE The nervous system consists of all nervous
... motor fibers leave the spinal cord via the ventral roots. One nerve fiber consists of an axon and its nerve sheath. Each axon in the peripheral nervous system is surrounded by a sheath of Schwann cells. An individual Schwann cell may surround the axon for several hundred micrometers, and it may, in ...
... motor fibers leave the spinal cord via the ventral roots. One nerve fiber consists of an axon and its nerve sheath. Each axon in the peripheral nervous system is surrounded by a sheath of Schwann cells. An individual Schwann cell may surround the axon for several hundred micrometers, and it may, in ...
Maximizing Instructional Time
... • The palm of your hand represents the cell body of your neuron. • Your arm represents the axon of your neuron. • Dendrites do not talk to other dendrites. • Dendrites talk to axons but they do not touch since the message has to cross an area called the synapse. • There is a substance that forms on ...
... • The palm of your hand represents the cell body of your neuron. • Your arm represents the axon of your neuron. • Dendrites do not talk to other dendrites. • Dendrites talk to axons but they do not touch since the message has to cross an area called the synapse. • There is a substance that forms on ...
Look at brain imaging article.
... understood than the relation between structure and function in any other organ system. We explore why bridging the structure-function divide is uniquely difficult in the brain. These difficulties also explain the thrust behind the enormous amount of innovation centered on microscopy in neuroscience. ...
... understood than the relation between structure and function in any other organ system. We explore why bridging the structure-function divide is uniquely difficult in the brain. These difficulties also explain the thrust behind the enormous amount of innovation centered on microscopy in neuroscience. ...
The Senses - Poudre School District
... • Do not discriminate color…only provide the CNS with info about the presence or absence of photons • Very light sensitive and enable us to see in dim light (enhanced in most animals) • Located around the sides of the retina (approx. 12 million) ...
... • Do not discriminate color…only provide the CNS with info about the presence or absence of photons • Very light sensitive and enable us to see in dim light (enhanced in most animals) • Located around the sides of the retina (approx. 12 million) ...
Option H Further Human Physiology
... Peptide hormone in blood binds to specific receptor glycoprotein on plasma membrane of target cell. ...
... Peptide hormone in blood binds to specific receptor glycoprotein on plasma membrane of target cell. ...
12-2 Neurons
... cardiovascular, urinary, reproductive) Internal senses (taste, deep pressure, pain) ...
... cardiovascular, urinary, reproductive) Internal senses (taste, deep pressure, pain) ...
The Nervous System
... • Combined waves travel down neuron – wave of opening ion channels moves down neuron – signal moves in one direction • flow of K+ out of cell stops activation of Na+ channels in ...
... • Combined waves travel down neuron – wave of opening ion channels moves down neuron – signal moves in one direction • flow of K+ out of cell stops activation of Na+ channels in ...
chapter29_Sections 6
... ion channels and no myelin • After an action potential occurs at a node, positive ions diffuse quickly through the cytoplasm to the next node because myelin prevents them from leaking out across the membrane • Arrival of positive ions at the next node pushes the region to threshold, and an action po ...
... ion channels and no myelin • After an action potential occurs at a node, positive ions diffuse quickly through the cytoplasm to the next node because myelin prevents them from leaking out across the membrane • Arrival of positive ions at the next node pushes the region to threshold, and an action po ...
Final Exam - Creighton Biology
... bbbbbb. the breakdown of food into simpler components. cccccc. the transport of food across the epithelial layer of the gut. dddddd. the uptake of nutrients by the liver. eeeeee. the transport of nutrients by the blood and lymph. ffffff. the storage of nutrients for future use. Bile salts are import ...
... bbbbbb. the breakdown of food into simpler components. cccccc. the transport of food across the epithelial layer of the gut. dddddd. the uptake of nutrients by the liver. eeeeee. the transport of nutrients by the blood and lymph. ffffff. the storage of nutrients for future use. Bile salts are import ...
Figure 8.12
... ◦ Allows for light to pass through ◦ Repairs itself easily ◦ The only human tissue that can be transplanted without fear of rejection ...
... ◦ Allows for light to pass through ◦ Repairs itself easily ◦ The only human tissue that can be transplanted without fear of rejection ...
Chapter 3 Biological Aspects of Psychology
... wet battery with a resting potential of about –70 millivolts. (b) When a neuron is stimulated, a brief jump in its electric potential occurs, resulting in a spike on the oscilloscope recording of the neuron’s electrical activity. This change in voltage, called an action potential, travels along the ...
... wet battery with a resting potential of about –70 millivolts. (b) When a neuron is stimulated, a brief jump in its electric potential occurs, resulting in a spike on the oscilloscope recording of the neuron’s electrical activity. This change in voltage, called an action potential, travels along the ...
Key Transmitters - Sinauer Associates
... A similar approach has been used to express a fluorescently tagged, light-activated, cationconducting protein, channelrhodopsin-2, in the dopaminergic neurons37 (Figure 14.4A). Then, dopaminergic neurons in an isolated midbrain slice could be stimulated selectively by a brief flash of blue light, wh ...
... A similar approach has been used to express a fluorescently tagged, light-activated, cationconducting protein, channelrhodopsin-2, in the dopaminergic neurons37 (Figure 14.4A). Then, dopaminergic neurons in an isolated midbrain slice could be stimulated selectively by a brief flash of blue light, wh ...
File - Dr. Jerry Cronin
... – Color vision results from different colors of light selectively activating the different cone photopigments ...
... – Color vision results from different colors of light selectively activating the different cone photopigments ...
Visual Brain
... (b) Visual system showing how some of the nerve fibers from the retina cross over to the opposite side of the brain at the optic chiasm. ...
... (b) Visual system showing how some of the nerve fibers from the retina cross over to the opposite side of the brain at the optic chiasm. ...
Information Theory and Learning
... For example, we can split the space into subspaces such that the cells are independent between subspaces and dependent within the subspaces. Eg: for 4 cells: ...
... For example, we can split the space into subspaces such that the cells are independent between subspaces and dependent within the subspaces. Eg: for 4 cells: ...
Regeneration of dopaminergic neurons in goldfish
... and transported retrogradely to the nucleus, subsequently killing cells. They never regenerated. Ablation of selective cells can also be accomplished with specific neurotoxins such as 6-hydroxydopamine (6OHDA). When injected into the goldfish eye, 6OHDA permanently destroys dopaminergic interplexifo ...
... and transported retrogradely to the nucleus, subsequently killing cells. They never regenerated. Ablation of selective cells can also be accomplished with specific neurotoxins such as 6-hydroxydopamine (6OHDA). When injected into the goldfish eye, 6OHDA permanently destroys dopaminergic interplexifo ...
Lecture 5 Transmitters and receptors lecture 2015
... Nitric oxide is made from L-arginine and a cofactor, citrullline by the enzyme nitric oxide synthase. Stimulation of a postganglionic parasympathetic neuron can cause complex effects on vascular smooth muscle cell. The first phase in this example is mediated by both nitric oxide (NO) and acetylcholi ...
... Nitric oxide is made from L-arginine and a cofactor, citrullline by the enzyme nitric oxide synthase. Stimulation of a postganglionic parasympathetic neuron can cause complex effects on vascular smooth muscle cell. The first phase in this example is mediated by both nitric oxide (NO) and acetylcholi ...
Answers to Mastering Concepts Questions
... channels still allowed sodium to flow (indicating tolerance to the toxin), whereas the wild type channel did not. ...
... channels still allowed sodium to flow (indicating tolerance to the toxin), whereas the wild type channel did not. ...
The Peripheral and Autonomic Nervous Systems
... 2. Activation of a sensory neuron 3. Information processing 4. Activation of a motor neuron 5. Response by an effector ...
... 2. Activation of a sensory neuron 3. Information processing 4. Activation of a motor neuron 5. Response by an effector ...
Neural Coding - Computing Science and Mathematics
... • How can the activity of neurons responding to different features of a single stimulus be combined? • Cell assembly: group of neurons that fire at the same time • Temporal p binding g – E.g red sphere and a blue cube ...
... • How can the activity of neurons responding to different features of a single stimulus be combined? • Cell assembly: group of neurons that fire at the same time • Temporal p binding g – E.g red sphere and a blue cube ...
The Limits of Intelligence
... achieved impressive workarounds at the level of the brain’s buildFor decades this dividing of the brain into more work cubicles ing blocks. When Jon H. Kaas, a neuroscientist at Vanderbilt Uniwas viewed as a hallmark of intelligence. But it may also reflect a versity, and his colleagues compared th ...
... achieved impressive workarounds at the level of the brain’s buildFor decades this dividing of the brain into more work cubicles ing blocks. When Jon H. Kaas, a neuroscientist at Vanderbilt Uniwas viewed as a hallmark of intelligence. But it may also reflect a versity, and his colleagues compared th ...
Actin , Synaptic plasticity in Parallel fibre-Purkinje Neuron
... effected by depolarising Purkinje cells and stimulating Parallel fibres simultaneously. Jasplakinolide, an actin stabilizing agent blocked the induction of LTD by the same protocol. The possiblility that actin depolymerisation as such may be affecting calcium channel activity and thereby modulating ...
... effected by depolarising Purkinje cells and stimulating Parallel fibres simultaneously. Jasplakinolide, an actin stabilizing agent blocked the induction of LTD by the same protocol. The possiblility that actin depolymerisation as such may be affecting calcium channel activity and thereby modulating ...
Channelrhodopsin
Channelrhodopsins are a subfamily of retinylidene proteins (rhodopsins) that function as light-gated ion channels. They serve as sensory photoreceptors in unicellular green algae, controlling phototaxis: movement in response to light. Expressed in cells of other organisms, they enable light to control electrical excitability, intracellular acidity, calcium influx, and other cellular processes. Channelrhodopsin-1 (ChR1) and Channelrhodopsin-2 (ChR2) from the model organism Chlamydomonas reinhardtii are the first discovered channelrhodopsins. Variants have been cloned from other algal species, and more are expected.