introduction
... amplitude of the depolarization caused by consecutive EPSPs produced by a single presynaptic neuron. • Spatial summation: EPSPs from different presynaptic neurons summate and their additive effects become sufficient to induce an action potential in the postsynaptic ...
... amplitude of the depolarization caused by consecutive EPSPs produced by a single presynaptic neuron. • Spatial summation: EPSPs from different presynaptic neurons summate and their additive effects become sufficient to induce an action potential in the postsynaptic ...
ppt - UTK-EECS
... output which is axon. Axons may be very long (over a foot) Synaptic junction: an axon impinges on a dendrite which causes input/output signal transitions ...
... output which is axon. Axons may be very long (over a foot) Synaptic junction: an axon impinges on a dendrite which causes input/output signal transitions ...
In the brain, most excitatory communication in synapses occurs by
... In the brain, most excitatory communication in synapses occurs by way of glutamate and most inhibitory communication occurs by way of gamma-aminobutyric acid. In general terms, describe what the other neurotransmitters do. ...
... In the brain, most excitatory communication in synapses occurs by way of glutamate and most inhibitory communication occurs by way of gamma-aminobutyric acid. In general terms, describe what the other neurotransmitters do. ...
Synapses - Franklin College
... Chemical Synapse: metabotropic Requires neurotransmitter for transmission Requires G-protein coupled receptor on post-synaptic membrane G-protein activates an enzyme on the cytoplasmic side of the membrane May involve degradative enzymes May involve reuptake transporters on pre-synaptic membrane Ex ...
... Chemical Synapse: metabotropic Requires neurotransmitter for transmission Requires G-protein coupled receptor on post-synaptic membrane G-protein activates an enzyme on the cytoplasmic side of the membrane May involve degradative enzymes May involve reuptake transporters on pre-synaptic membrane Ex ...
Neurons - Scott Melcher
... Neurons are intricately interwoven, but do not actually touch. The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving cell is called a synapse. The tiny gap at this junction is called the synaptic gap or cleft. When neurons are firing and action potent ...
... Neurons are intricately interwoven, but do not actually touch. The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving cell is called a synapse. The tiny gap at this junction is called the synaptic gap or cleft. When neurons are firing and action potent ...
File
... and axon. What are the functions of each component? Answer: Cell body- control center (nucleus & cytoplasm). Axons- extends from cell body & produces nerve terminals. Dendrite- receives messages from other neurons. ...
... and axon. What are the functions of each component? Answer: Cell body- control center (nucleus & cytoplasm). Axons- extends from cell body & produces nerve terminals. Dendrite- receives messages from other neurons. ...
Myers Module Four
... Each consists of a cell body and branching fibres. The dendrites are the bushy, branching extensions that receive messages and conduct impulses toward the cell body. For the biology students: dendrites are complex microtubules, proof that neurons are specializations from ...
... Each consists of a cell body and branching fibres. The dendrites are the bushy, branching extensions that receive messages and conduct impulses toward the cell body. For the biology students: dendrites are complex microtubules, proof that neurons are specializations from ...
Ch 48 Notes - FacStaff Home Page for CBU
... The axon is typically a much longer extension that transmits signals to other cells at synapses ...
... The axon is typically a much longer extension that transmits signals to other cells at synapses ...
chapter 48
... 1) _______________________________ the gated Na+ and K+ gates are _________________ (so only the sodium potassium pump and ungated channels are moving ions to maintain resting potential) 2) ___________________________ triggered by an action potential which signals the opening of ____ gates, and ...
... 1) _______________________________ the gated Na+ and K+ gates are _________________ (so only the sodium potassium pump and ungated channels are moving ions to maintain resting potential) 2) ___________________________ triggered by an action potential which signals the opening of ____ gates, and ...
PSYCH 2230
... Forces that Contribute to Action Potentials: 1. The Na+/K+ pump establishes a “concentration gradient” and a “charge gradient” a. Particles tend to diffuse down a concentration gradient. b. In the charge gradient opposite charges attract and like charges repel c. Once the Na+ is out, it can’t come b ...
... Forces that Contribute to Action Potentials: 1. The Na+/K+ pump establishes a “concentration gradient” and a “charge gradient” a. Particles tend to diffuse down a concentration gradient. b. In the charge gradient opposite charges attract and like charges repel c. Once the Na+ is out, it can’t come b ...
53 XIX BLY 122 Lecture Notes (O`Brien)
... b. Ions move across membranes in response to electrochemical gradients 2. The Resting potential is the membrane potential when sodium (Na+), potassium (K+), and Chloride (Cl–) ions are at equilibrium ...
... b. Ions move across membranes in response to electrochemical gradients 2. The Resting potential is the membrane potential when sodium (Na+), potassium (K+), and Chloride (Cl–) ions are at equilibrium ...
ANP 214 REVIEW QUESTIONS 1
... 4. Which type of parasympathetic receptor relies upon G-protein activity? Several different types of toxins are agonists for these types of receptors, and will therefore bind to the receptor. What types of symptoms might be observed in a patient suffering from poisoning by such a toxin? 5. Given you ...
... 4. Which type of parasympathetic receptor relies upon G-protein activity? Several different types of toxins are agonists for these types of receptors, and will therefore bind to the receptor. What types of symptoms might be observed in a patient suffering from poisoning by such a toxin? 5. Given you ...
Action Potential Webquest
... Go to http://www.youtube.com/watch?v=YP_P6bYvEjE Watch this video. It shows how membrane potential (resting potential) develops in the neuron cell. 1. What causes the inside of the cell to be more negative compared to the outside of the cell? ...
... Go to http://www.youtube.com/watch?v=YP_P6bYvEjE Watch this video. It shows how membrane potential (resting potential) develops in the neuron cell. 1. What causes the inside of the cell to be more negative compared to the outside of the cell? ...
Neuron Physiology Notes
... Stages of a Nerve Impulse STAGE 1) Neuron at “resting membrane potential” is polarized with a resting potential of (-70 mv) 2.) Neuron is stimulated by the influx of a neurotransmitters that causes sodium channels to open. Sodium moves inward causing neuron to depolarize. (-62mv) 3.) Threshold is r ...
... Stages of a Nerve Impulse STAGE 1) Neuron at “resting membrane potential” is polarized with a resting potential of (-70 mv) 2.) Neuron is stimulated by the influx of a neurotransmitters that causes sodium channels to open. Sodium moves inward causing neuron to depolarize. (-62mv) 3.) Threshold is r ...
Chapter 3
... Chapter 2 Nerve Cells and Nerve Impulses Module 2.1 The Cells of the Nervous System 1. Know the main structures of neurons and the structural differences among neurons. 2. Know the main types of glia and their functions. 3. Be able to describe the advantages and disadvantages of the blood-brain barr ...
... Chapter 2 Nerve Cells and Nerve Impulses Module 2.1 The Cells of the Nervous System 1. Know the main structures of neurons and the structural differences among neurons. 2. Know the main types of glia and their functions. 3. Be able to describe the advantages and disadvantages of the blood-brain barr ...
Checkpoint Answers
... 5. Regeneration of CNS axons may be prevented by inhibitory proteins in the membranes of the myelin sheath as well as glial scars. true 6. The blood-brain barrier results mostly from the action of __________, a type of glial cell. A. ependymal cells B. microglia *C. astrocytes D. oligodendrocytes ...
... 5. Regeneration of CNS axons may be prevented by inhibitory proteins in the membranes of the myelin sheath as well as glial scars. true 6. The blood-brain barrier results mostly from the action of __________, a type of glial cell. A. ependymal cells B. microglia *C. astrocytes D. oligodendrocytes ...
Neurons and how they communicate
... neuron to fire off its own message, or inhibitory, decreasing the probability that the neuron will fire The power to restrain is just as crucial as important as the power to engage in action ...
... neuron to fire off its own message, or inhibitory, decreasing the probability that the neuron will fire The power to restrain is just as crucial as important as the power to engage in action ...
Neurons and Glia Three basic neurons: ∼ Multipolar: Neurons by
... Types of Neurotransmitters/Neuromodulators: ∼ Amino Acids ◊ Glutamate – Most common excitatory neurotransmitter ◊ GABA & Glycine – Most common inhibitory neurotransmitters. GABA is brain, Glycine is SC ∼ Monoamines: (involved in attention, cognition, emotion) ◊ Serotonin Neurotransmitter Receptor ...
... Types of Neurotransmitters/Neuromodulators: ∼ Amino Acids ◊ Glutamate – Most common excitatory neurotransmitter ◊ GABA & Glycine – Most common inhibitory neurotransmitters. GABA is brain, Glycine is SC ∼ Monoamines: (involved in attention, cognition, emotion) ◊ Serotonin Neurotransmitter Receptor ...
here
... 26. __________________between two neurons occurs when a gap junction fuses the membranes of a pair of dendrites together. ...
... 26. __________________between two neurons occurs when a gap junction fuses the membranes of a pair of dendrites together. ...
The Nervous System
... • Stimulus causes Na+ gates to open. • Na+ influx changes membrane potential. • If Na+ influx is great enough to achieve threshold potential (-50mV), then all Na+ gates open. • “All or none” phenomenon…at threshold, all gates will be opened (below threshold, no extra gates will open) and stimulus is ...
... • Stimulus causes Na+ gates to open. • Na+ influx changes membrane potential. • If Na+ influx is great enough to achieve threshold potential (-50mV), then all Na+ gates open. • “All or none” phenomenon…at threshold, all gates will be opened (below threshold, no extra gates will open) and stimulus is ...
Physiology 2 - Sheet #6 - Dr.Loai Al-Zgoul - Done by: Yara
... determines the effect of the released neurotransmitter. There are two types of receptors (both are ligand-gated, ligand receptors and neurotransmitter binding):1- Ionotropic Receptors (Ion channel receptors) They open ion channels. - Opening Na+ or Ca++ channels causes depolarization (influx of io ...
... determines the effect of the released neurotransmitter. There are two types of receptors (both are ligand-gated, ligand receptors and neurotransmitter binding):1- Ionotropic Receptors (Ion channel receptors) They open ion channels. - Opening Na+ or Ca++ channels causes depolarization (influx of io ...
THE NERVOUS SYSTEM: Communication
... effectors (muscles or glands). The goal is usually to maintain stable conditions (especially internal) – Homeostasis. Motor neurons. - Somatic Nervous System (skeletal muscles) - Autonomic Nervous System (smooth muscles, glands) C. Neurons: Nerve cells. Unique structure – cell body with many extensi ...
... effectors (muscles or glands). The goal is usually to maintain stable conditions (especially internal) – Homeostasis. Motor neurons. - Somatic Nervous System (skeletal muscles) - Autonomic Nervous System (smooth muscles, glands) C. Neurons: Nerve cells. Unique structure – cell body with many extensi ...
Molecular neuroscience
Molecular neuroscience is a branch of neuroscience that observes concepts in molecular biology applied to the nervous systems of animals. The scope of this subject primarily pertains to a reductionist view of neuroscience, considering topics such as molecular neuroanatomy, mechanisms of molecular signaling in the nervous system, the effects of genetics on neuronal development, and the molecular basis for neuroplasticity and neurodegenerative diseases. As with molecular biology, molecular neuroscience is a relatively new field that is considerably dynamic.