True or False Questions - Sinoe Medical Association
... 7. If pNa were greater than pK, the resting membrane potential of a cell would closer to the sodium equilibrium potential than to the potassium equilibrium potential. TF 8. During the undershoot of the action potential, the membrane potential moves closer to the potassium equilibrium potential than ...
... 7. If pNa were greater than pK, the resting membrane potential of a cell would closer to the sodium equilibrium potential than to the potassium equilibrium potential. TF 8. During the undershoot of the action potential, the membrane potential moves closer to the potassium equilibrium potential than ...
Exam I
... 20) If neuron X is excitatory and fires multiple action potentials to bring neuron W to threshold… A) spatial summation is occurring. B) temporal summation is occurring. C) inhibition shunting is occurring. D) All of the above are true. E) None of the above is true. 21) Based only on the location of ...
... 20) If neuron X is excitatory and fires multiple action potentials to bring neuron W to threshold… A) spatial summation is occurring. B) temporal summation is occurring. C) inhibition shunting is occurring. D) All of the above are true. E) None of the above is true. 21) Based only on the location of ...
Here we can focus directly on the input neurons, the Schaffer
... now focusing on the post-synaptic cell. The early change for explicit memory storage is going to have a pull synaptic target rather than a p synaptic target. The Schaffer collaterals come in, they release glutamate just as we saw in the sensory neurons in aplysia. They act on two different kinds ...
... now focusing on the post-synaptic cell. The early change for explicit memory storage is going to have a pull synaptic target rather than a p synaptic target. The Schaffer collaterals come in, they release glutamate just as we saw in the sensory neurons in aplysia. They act on two different kinds ...
Test 3
... 1. List the structural and functional divisions of the nervous system, and describe their relationship to each other. Nervous system, CNS, PNS, Somatic, ANS. Sensory, integration, motor 2. Describe the types of glial cells, Schwann, oligodendrocyte 3. Explain the physiological characteristics of mat ...
... 1. List the structural and functional divisions of the nervous system, and describe their relationship to each other. Nervous system, CNS, PNS, Somatic, ANS. Sensory, integration, motor 2. Describe the types of glial cells, Schwann, oligodendrocyte 3. Explain the physiological characteristics of mat ...
action potential
... •Neurons communicate by means of an electrical signal called the action potential •Action potentials are based on the movements of ions between the outside and inside of the cell •When an action potential occurs, a molecular message is sent to neighboring neurons ...
... •Neurons communicate by means of an electrical signal called the action potential •Action potentials are based on the movements of ions between the outside and inside of the cell •When an action potential occurs, a molecular message is sent to neighboring neurons ...
Test 5 Study Guide
... o A state of unconsciousness in which an individual can be aroused by normal stimuli is sleep. o A state of unconsciousness in which an individual cannot be aroused even by strong stimuli is coma. o The brain waves produced by normal adults while resting with their eyes closed are alpha waves. o In ...
... o A state of unconsciousness in which an individual can be aroused by normal stimuli is sleep. o A state of unconsciousness in which an individual cannot be aroused even by strong stimuli is coma. o The brain waves produced by normal adults while resting with their eyes closed are alpha waves. o In ...
The Nervous System crossword
... 3. The cells of the nervous system are called neurones. 4. What is the name of the membrane bound structure found in the body of the cell? [Nucleus] 6. The small space between two nerve cells is called the synaptic cleft. 8. The motor neurone sends signals to your muscles to make ...
... 3. The cells of the nervous system are called neurones. 4. What is the name of the membrane bound structure found in the body of the cell? [Nucleus] 6. The small space between two nerve cells is called the synaptic cleft. 8. The motor neurone sends signals to your muscles to make ...
The Nervous System
... ensues, depolarizing the cell and causing the VM to increase. This is the rising phase of an AP. • Eventually, the Na+ channel will have inactivated and the K+ channels will be open. Now, K+ effluxes and repolarization occurs. This is the falling phase. – K+ channels are slow to open and slow to clo ...
... ensues, depolarizing the cell and causing the VM to increase. This is the rising phase of an AP. • Eventually, the Na+ channel will have inactivated and the K+ channels will be open. Now, K+ effluxes and repolarization occurs. This is the falling phase. – K+ channels are slow to open and slow to clo ...
Lecture 2 (Neurons)
... communicate information quickly by using ionic currents and chemical signals called neurotransmitters. Nerve - Many neurons that are bundled together and covered by a connective tissue sheath. Nervous System – The entire network of interconnecting neurons. ...
... communicate information quickly by using ionic currents and chemical signals called neurotransmitters. Nerve - Many neurons that are bundled together and covered by a connective tissue sheath. Nervous System – The entire network of interconnecting neurons. ...
Principles of Computational Modeling in NeuroscienceDavid Sterratt
... in a network of excitatory and inhibitory integrateand-fire neurons, and next presents more complex network models of conductance-based neurons where associative memory can be embedded. After that, it explores two different models of thalamocortical interactions: one with multi-compartmental neurons ...
... in a network of excitatory and inhibitory integrateand-fire neurons, and next presents more complex network models of conductance-based neurons where associative memory can be embedded. After that, it explores two different models of thalamocortical interactions: one with multi-compartmental neurons ...
Slide 1
... FIGURE 47.2 Model of short-term heterosynaptic facilitation of the sensorimotor connection that contributes to short-term sensitization in Aplysia. (A1) Sensitizing stimuli activate facilitatory interneurons (IN) that release modulatory transmitters, one of which is 5-HT. The modulator leads to an ...
... FIGURE 47.2 Model of short-term heterosynaptic facilitation of the sensorimotor connection that contributes to short-term sensitization in Aplysia. (A1) Sensitizing stimuli activate facilitatory interneurons (IN) that release modulatory transmitters, one of which is 5-HT. The modulator leads to an ...
collinsnervoussystem (1)
... • Dendrites receive neurotransmitter from another neuron across the synapse. • Reached its threshold- then fires based on the all-or-none response. • Opens up a portal in axon, and lets in positive ions (Sodium) which mix with negative ions (Potassium) that is already inside the axon (thus Neurons a ...
... • Dendrites receive neurotransmitter from another neuron across the synapse. • Reached its threshold- then fires based on the all-or-none response. • Opens up a portal in axon, and lets in positive ions (Sodium) which mix with negative ions (Potassium) that is already inside the axon (thus Neurons a ...
Characteristic for receptor cells
... • Rate of adaptation to different sweet stimuli not same, perception of sweet taste of saccharine declines more than twice as fast as sweet taste of sugar on successive samples ...
... • Rate of adaptation to different sweet stimuli not same, perception of sweet taste of saccharine declines more than twice as fast as sweet taste of sugar on successive samples ...
Chapter 3 - Morgan Community College
... faster, two-way transmission & capable of synchronizing groups of neurons ...
... faster, two-way transmission & capable of synchronizing groups of neurons ...
Neurons – A whistle-stop Tour
... At synapses, the ends of axons (called axon terminals) nearly, but not actually touch the next neuron. Axon terminals contain many synaptic vesicules loaded with 2000 molecules of a specialised compound called a neurotransmitter. An electrical impulse called a ‘spike’ sends electrical impulses down ...
... At synapses, the ends of axons (called axon terminals) nearly, but not actually touch the next neuron. Axon terminals contain many synaptic vesicules loaded with 2000 molecules of a specialised compound called a neurotransmitter. An electrical impulse called a ‘spike’ sends electrical impulses down ...
of the smooth muscles
... and by the fact that it shows continuous, irregular contractions that are independent of its nerve supply. This maintained state of partial contraction is called tonus or tone. There is no true "resting" value for the membrane potential, but it averages about -50 mV, when the muscle active it become ...
... and by the fact that it shows continuous, irregular contractions that are independent of its nerve supply. This maintained state of partial contraction is called tonus or tone. There is no true "resting" value for the membrane potential, but it averages about -50 mV, when the muscle active it become ...
Readings to Accompany “Nerves” Worksheet (adapted from France
... nerve can stop signals to and from the central nervous system, causing impaired muscle function and loss of (or abnormal) sensation in the injured area. When a nerve is cut, both the nerve and its insulating myelin sheath are disrupted. Compression or tensile injuries can cause nerve fibers to break ...
... nerve can stop signals to and from the central nervous system, causing impaired muscle function and loss of (or abnormal) sensation in the injured area. When a nerve is cut, both the nerve and its insulating myelin sheath are disrupted. Compression or tensile injuries can cause nerve fibers to break ...
No Slide Title
... 1. Schwann cells -- myelinate fibers of PNS; assist in the regeneration of damaged fibers 2. Satellite cells – surround cell bodies in ganglia; regulate the chemical environment of the neurons ...
... 1. Schwann cells -- myelinate fibers of PNS; assist in the regeneration of damaged fibers 2. Satellite cells – surround cell bodies in ganglia; regulate the chemical environment of the neurons ...
Nervous and Endocrine Systems
... IPSP = Inhibitory Postsynaptic Potential EPSP = Inhibitory Postsynaptic Potential ...
... IPSP = Inhibitory Postsynaptic Potential EPSP = Inhibitory Postsynaptic Potential ...
chapt10_holes_lecture_animation
... operating systems, some animations will not appear until the presentation is viewed in Presentation Mode (Slide Show view). You may see blank slides in the “Normal” or “Slide Sorter” views. All animations will appear after viewing in Presentation Mode and playing each animation. Most animations will ...
... operating systems, some animations will not appear until the presentation is viewed in Presentation Mode (Slide Show view). You may see blank slides in the “Normal” or “Slide Sorter” views. All animations will appear after viewing in Presentation Mode and playing each animation. Most animations will ...
PowerPoint to accompany Hole’s Human Anatomy and
... operating systems, some animations will not appear until the presentation is viewed in Presentation Mode (Slide Show view). You may see blank slides in the “Normal” or “Slide Sorter” views. All animations will appear after viewing in Presentation Mode and playing each animation. Most animations will ...
... operating systems, some animations will not appear until the presentation is viewed in Presentation Mode (Slide Show view). You may see blank slides in the “Normal” or “Slide Sorter” views. All animations will appear after viewing in Presentation Mode and playing each animation. Most animations will ...
Candy Neurons Activity
... Students work in pairs of two to create their candy neurons. They must be labeled and contain all key parts. Once they are done they must link of their diagram with another two groups. When you have a group of 6 come by for some direct instruction showing that neurons fire DAT way. Dendrites t ...
... Students work in pairs of two to create their candy neurons. They must be labeled and contain all key parts. Once they are done they must link of their diagram with another two groups. When you have a group of 6 come by for some direct instruction showing that neurons fire DAT way. Dendrites t ...
End-plate potential
End plate potentials (EPPs) are the depolarizations of skeletal muscle fibers caused by neurotransmitters binding to the postsynaptic membrane in the neuromuscular junction. They are called ""end plates"" because the postsynaptic terminals of muscle fibers have a large, saucer-like appearance. When an action potential reaches the axon terminal of a motor neuron, vesicles carrying neurotransmitters (mostly acetylcholine) are exocytosed and the contents are released into the neuromuscular junction. These neurotransmitters bind to receptors on the postsynaptic membrane and lead to its depolarization. In the absence of an action potential, acetylcholine vesicles spontaneously leak into the neuromuscular junction and cause very small depolarizations in the postsynaptic membrane. This small response (~0.5mV) is called a miniature end plate potential (MEPP) and is generated by one acetylcholine-containing vesicle. It represents the smallest possible depolarization which can be induced in a muscle.