Worksheet 1
... 6. What are the two major ways that the NMJ (a peripheral synapse) differs from the synapses in the CNS? What are temporal and spatial integration, and why are they needed in the CNS, but not the NMJ? 1. There are only excitatory post synaptic potentials in the NMJ. The CNS has inhibitory post synap ...
... 6. What are the two major ways that the NMJ (a peripheral synapse) differs from the synapses in the CNS? What are temporal and spatial integration, and why are they needed in the CNS, but not the NMJ? 1. There are only excitatory post synaptic potentials in the NMJ. The CNS has inhibitory post synap ...
The Nervous System
... 2. Interneurons- are neurons that carry impulses from one neuron to another. 3. Motor Neurons- sends an impulse to a muscle or gland to react in response. ...
... 2. Interneurons- are neurons that carry impulses from one neuron to another. 3. Motor Neurons- sends an impulse to a muscle or gland to react in response. ...
Nerve Cells PPT
... covering) of a neuron. DENDRITES function to receive the signal and carry the nerve conduction toward the cell body. SOMA (cell body) is where the nucleus, ribosomes, and most organelles are located AXON HILLOCK is the area on the soma where the action potential (electrical charges) of the neuron bu ...
... covering) of a neuron. DENDRITES function to receive the signal and carry the nerve conduction toward the cell body. SOMA (cell body) is where the nucleus, ribosomes, and most organelles are located AXON HILLOCK is the area on the soma where the action potential (electrical charges) of the neuron bu ...
Communication between Neurons
... the button where it meets the axon, some membrane breaks off into the cytoplasm and migrates to the golgi body where it is recycled into more vesicles for neurotransmitters. iii) Action of neurotransmitters on Post Synaptic membrane The neurotransmitter diffuses across the synaptic cleft until it bi ...
... the button where it meets the axon, some membrane breaks off into the cytoplasm and migrates to the golgi body where it is recycled into more vesicles for neurotransmitters. iii) Action of neurotransmitters on Post Synaptic membrane The neurotransmitter diffuses across the synaptic cleft until it bi ...
Diapositive 1
... Tetrahydrocannabinol (THC)-like NT (Cannabis effects) Vigorous firing of action potentials in the postsynaptic neuron causes voltage-gated calcium channels to open, Ca2+ enters the cell in large quantities, and intracellular [Ca2+] rises. ...
... Tetrahydrocannabinol (THC)-like NT (Cannabis effects) Vigorous firing of action potentials in the postsynaptic neuron causes voltage-gated calcium channels to open, Ca2+ enters the cell in large quantities, and intracellular [Ca2+] rises. ...
Central Nervous System
... • The net effect, since there are more Na+ ions outside than K+ ions inside, the cell membrane has a strong positive charge outside. The difference from the inside to the outside is -70 mV, or the resting potential. ...
... • The net effect, since there are more Na+ ions outside than K+ ions inside, the cell membrane has a strong positive charge outside. The difference from the inside to the outside is -70 mV, or the resting potential. ...
chapt09answers
... Sodium/potassium pump: What is its role? Pumps sodium ions out and potassium ions in Why don’t the sodium and potassium move during the resting potential? Ion channels are closed Neuron Physiology: What is a threshold stimulus doing to the membrane? Causes enough sodium channels to open to bring abo ...
... Sodium/potassium pump: What is its role? Pumps sodium ions out and potassium ions in Why don’t the sodium and potassium move during the resting potential? Ion channels are closed Neuron Physiology: What is a threshold stimulus doing to the membrane? Causes enough sodium channels to open to bring abo ...
Slide 1
... FIGURE 5.7 Voltage-clamp analysis reveals ionic currents underlying action potential generation. (A) Increasing the potential from −60 to 0 mV across the membrane of the squid giant axon activates an inward current followed by an outward current. If the Na+ in seawater is replaced by choline (which ...
... FIGURE 5.7 Voltage-clamp analysis reveals ionic currents underlying action potential generation. (A) Increasing the potential from −60 to 0 mV across the membrane of the squid giant axon activates an inward current followed by an outward current. If the Na+ in seawater is replaced by choline (which ...
File
... Axon: Long single extension of a neuron, covered with myelin [MY-uh-lin] sheath to insulate and speed up messages through neurons. Terminal Branches of axon: Branched endings of an axon that transmit messages to other neurons. ...
... Axon: Long single extension of a neuron, covered with myelin [MY-uh-lin] sheath to insulate and speed up messages through neurons. Terminal Branches of axon: Branched endings of an axon that transmit messages to other neurons. ...
video slide - ScienceToGo
... • The speed of an action potential increases with the axon’s diameter • In vertebrates, axons are insulated by a myelin sheath, which causes an action potential’s speed to increase • Myelin sheaths are made by glia— oligodendrocytes in the CNS and Schwann cells in the PNS Node of Ranvier Layers of ...
... • The speed of an action potential increases with the axon’s diameter • In vertebrates, axons are insulated by a myelin sheath, which causes an action potential’s speed to increase • Myelin sheaths are made by glia— oligodendrocytes in the CNS and Schwann cells in the PNS Node of Ranvier Layers of ...
Biology for Engineers: Cellular and Systems Neurophysiology
... • The Current-Voltage relationship of a cloned Na+ channel – At very negative potentials, the channels are closed – At very positive potentials, the current is small, or positive, because of inactivation and the sodium reversal potential – It would be useful to measure the I-V curve when the sodium ...
... • The Current-Voltage relationship of a cloned Na+ channel – At very negative potentials, the channels are closed – At very positive potentials, the current is small, or positive, because of inactivation and the sodium reversal potential – It would be useful to measure the I-V curve when the sodium ...
Biology 12 Nervous System Major Divisions of Nervous System 1
... Action potential: • At certain point on membrane of the neuron, stimulation changes its electro-chemical nature. • This causes Na+ gates or channels (carrier proteins) to open and allow sodium ions to move in toward the centre of the neuron. The effect of this is to change the net negative charge of ...
... Action potential: • At certain point on membrane of the neuron, stimulation changes its electro-chemical nature. • This causes Na+ gates or channels (carrier proteins) to open and allow sodium ions to move in toward the centre of the neuron. The effect of this is to change the net negative charge of ...
Nerves and Muscles
... (Ach) from the synaptic bulbs • ACh binds receptors on the sarcolemma • Gated ion channels open letting in Na+ • Na makes the inside of the muscle fiber more + • Triggers muscle action potential ...
... (Ach) from the synaptic bulbs • ACh binds receptors on the sarcolemma • Gated ion channels open letting in Na+ • Na makes the inside of the muscle fiber more + • Triggers muscle action potential ...
Chapter 3 Neuroscience and Behavior
... When an action potential reaches the axon terminal, the synaptic vesicles release their neurotransmitters inside it and the neurotransmitters move into the synaptic cleft Neurotransmitters have a distinctive shape; the receptor site of the receiving cell is coordinated with the shape of the neurotra ...
... When an action potential reaches the axon terminal, the synaptic vesicles release their neurotransmitters inside it and the neurotransmitters move into the synaptic cleft Neurotransmitters have a distinctive shape; the receptor site of the receiving cell is coordinated with the shape of the neurotra ...
Cells and Tissues - Lone Star College
... Moves organelles inside the cell; form the spindles during mitosis; compose cilia, flagella, and centrioles ...
... Moves organelles inside the cell; form the spindles during mitosis; compose cilia, flagella, and centrioles ...
Cells and Tissues
... Moves organelles inside the cell; form the spindles during mitosis; compose cilia, flagella, and centrioles ...
... Moves organelles inside the cell; form the spindles during mitosis; compose cilia, flagella, and centrioles ...
Molecular and Cellular Mechanisms of the Neurovascular Link
... Fig. 2: Model systems to study neuro-vascular communication during CNS development. A) Image of a spinal cord cross-section from a E11.5 mouse embryo where blood vessels are labeled with the endothelial cell marker CD31 (red) and motor neurons with the HB9 marker (green). B) Whole mount image of a m ...
... Fig. 2: Model systems to study neuro-vascular communication during CNS development. A) Image of a spinal cord cross-section from a E11.5 mouse embryo where blood vessels are labeled with the endothelial cell marker CD31 (red) and motor neurons with the HB9 marker (green). B) Whole mount image of a m ...
CRYDERS_2b-nervous-exam-review-list-2017
... Neuron: parts of the cell, function of each part, including axon hillock, axolemma, Neurilemma, myelin and cells that produce this, Neuroglia: astrocytes, microglia, ependymal cells, Oligodendrocytes, Schwann cells, Satellite cells: what is the function of each? Primary tissue type? Location? Types ...
... Neuron: parts of the cell, function of each part, including axon hillock, axolemma, Neurilemma, myelin and cells that produce this, Neuroglia: astrocytes, microglia, ependymal cells, Oligodendrocytes, Schwann cells, Satellite cells: what is the function of each? Primary tissue type? Location? Types ...
Answers to Mastering Concepts Questions
... - axon: a long fiber extending from the cell body. Axons branch at their terminal ends and form junctions with other cells, such as other neurons, muscles, or glands. The role of the axon is to transmit a nerve impulse to another cell. 2. Where is the myelin sheath located? The myelin sheath is arou ...
... - axon: a long fiber extending from the cell body. Axons branch at their terminal ends and form junctions with other cells, such as other neurons, muscles, or glands. The role of the axon is to transmit a nerve impulse to another cell. 2. Where is the myelin sheath located? The myelin sheath is arou ...
The Nervous System
... • during Na+ influx and early K+ outflow • No amount of stimulus can elicit another AP • Relative refractory period – • during end of repolarization period • Strong stimulus may elicit response ...
... • during Na+ influx and early K+ outflow • No amount of stimulus can elicit another AP • Relative refractory period – • during end of repolarization period • Strong stimulus may elicit response ...
The Nervous System - Catherine Huff`s Site
... • during Na+ influx and early K+ outflow • No amount of stimulus can elicit another AP • Relative refractory period – • during end of repolarization period • Strong stimulus may elicit response ...
... • during Na+ influx and early K+ outflow • No amount of stimulus can elicit another AP • Relative refractory period – • during end of repolarization period • Strong stimulus may elicit response ...
General principle of nervous system
... – Addition of successive rapid discharge • Summation of successive ESPS ...
... – Addition of successive rapid discharge • Summation of successive ESPS ...
Slide ()
... Organelles of the neuron. Electron micrographs show cytoplasm in four different regions of the neuron. (Adapted, with permission, from Peters et al. 1991.) A. A dendrite emerges from a pyramidal neuron's cell body, which includes the endoplasmic reticulum (ER) above the nucleus (N) and a portion of ...
... Organelles of the neuron. Electron micrographs show cytoplasm in four different regions of the neuron. (Adapted, with permission, from Peters et al. 1991.) A. A dendrite emerges from a pyramidal neuron's cell body, which includes the endoplasmic reticulum (ER) above the nucleus (N) and a portion of ...
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.