Mod 07-Lecture - Phoenix Military Academy
... (MS). But even their top speed is 3 million times slower than electricity (which is why human reaction time is measured in milliseconds and a computer’s RT measured in nanoseconds). Nodes of Ranvier = indents in the myelin sheath. Saltatory conduction = speeded up neurotransmission due to myelin she ...
... (MS). But even their top speed is 3 million times slower than electricity (which is why human reaction time is measured in milliseconds and a computer’s RT measured in nanoseconds). Nodes of Ranvier = indents in the myelin sheath. Saltatory conduction = speeded up neurotransmission due to myelin she ...
PHYSIOLOGY OF THE NERVOUS SYSTEM
... Voltage Measures the Potential Energy due to separation of charges across a membrane! ...
... Voltage Measures the Potential Energy due to separation of charges across a membrane! ...
begin
... Axons end in axonal terminals Axonal terminals contain vesicles with neurotransmitters Axonal terminals are separated from the next neuron by a gap Synaptic cleft – gap between adjacent neurons Synapse – junction between nerves Copyright © 2003 Pearson Education, Inc. publishing as Benjami ...
... Axons end in axonal terminals Axonal terminals contain vesicles with neurotransmitters Axonal terminals are separated from the next neuron by a gap Synaptic cleft – gap between adjacent neurons Synapse – junction between nerves Copyright © 2003 Pearson Education, Inc. publishing as Benjami ...
nervous system development and histology
... Peripheral neuroglia • 1- schwann cell • 2- satellite cell ...
... Peripheral neuroglia • 1- schwann cell • 2- satellite cell ...
Response to Referees
... in which, for example, the neurons purified from mice with one genotype (normal or mutant “x”) could be cocultured with Schwann cells purified from mice with another genotype (mutant “y”, or normal), and vice versa. The pre-purified DRG/Schwann cell coculture model, on the other hand, should be idea ...
... in which, for example, the neurons purified from mice with one genotype (normal or mutant “x”) could be cocultured with Schwann cells purified from mice with another genotype (mutant “y”, or normal), and vice versa. The pre-purified DRG/Schwann cell coculture model, on the other hand, should be idea ...
Neuron PowerPoint
... to our biology), this chapter will focus on the neuron, the nervous system, and how these physiological components of our being interact, respond to, and influence our psychological health. ...
... to our biology), this chapter will focus on the neuron, the nervous system, and how these physiological components of our being interact, respond to, and influence our psychological health. ...
Unit-2-Status-Updates-2015
... For this activity you will focus on the most important details about each of the cell parts and contributors to the Cell Theory. First, think of one key word to associate with the topic; this should be some sort of mind-jogger. Then, using a bit of imagination, create a status update that could have ...
... For this activity you will focus on the most important details about each of the cell parts and contributors to the Cell Theory. First, think of one key word to associate with the topic; this should be some sort of mind-jogger. Then, using a bit of imagination, create a status update that could have ...
Neuron Function notes
... spinal cord section DOES NOT lead to complete motor or sensory loss in the body part that is supplied Root = ventral roots are motor(efferent) nerves Dorsal roots are sensory(afferent) nerves Ventral or dorsal relative to the spinal cord Ventral toward body of vertebra Dorsal toward spinous process ...
... spinal cord section DOES NOT lead to complete motor or sensory loss in the body part that is supplied Root = ventral roots are motor(efferent) nerves Dorsal roots are sensory(afferent) nerves Ventral or dorsal relative to the spinal cord Ventral toward body of vertebra Dorsal toward spinous process ...
Gated Channels
... flow and have faster impulse conduction • Effect of myelination • Continuous conduction in unmyelinated axons is slower than saltatory conduction in myelinated axons • Effects of myelination • Myelin sheaths insulate and prevent leakage of charge • Saltatory conduction in myelinated axons is about ...
... flow and have faster impulse conduction • Effect of myelination • Continuous conduction in unmyelinated axons is slower than saltatory conduction in myelinated axons • Effects of myelination • Myelin sheaths insulate and prevent leakage of charge • Saltatory conduction in myelinated axons is about ...
a positive electrical signal
... receives electrical signals and releases chemical signals out of the neuron ...
... receives electrical signals and releases chemical signals out of the neuron ...
Synaptogenesis
... A: In the mature retina, retinal ganglion cells show diverse and uncorrelated patterns of action potential activity. Action potentials (vertical lines) of three cells are schematized here. B: Before eye opening, retinal ganglion cells generate rhythmic bursts of action potentials that are synchroni ...
... A: In the mature retina, retinal ganglion cells show diverse and uncorrelated patterns of action potential activity. Action potentials (vertical lines) of three cells are schematized here. B: Before eye opening, retinal ganglion cells generate rhythmic bursts of action potentials that are synchroni ...
Lecture 2 (Neurons)
... ER, mitochondria, golgi complex, etc). Is where most the synthesis of new cellular products occurs. ...
... ER, mitochondria, golgi complex, etc). Is where most the synthesis of new cellular products occurs. ...
Study questions for this lab.
... How is it that a touch stimulus delivered to the left hand gets processed on the right side of the brain? For a first order sensory neuron axon conveying pain or temperature information, what is the location of the second order sensory neuron’s cell body? At what location do pain and temperature pat ...
... How is it that a touch stimulus delivered to the left hand gets processed on the right side of the brain? For a first order sensory neuron axon conveying pain or temperature information, what is the location of the second order sensory neuron’s cell body? At what location do pain and temperature pat ...
P416 COMPARATIVE ANIMAL PHYSIOLOGY
... • Conduction velocity – speed at which the action potential travels down the length of an axon – dictates speed of response ...
... • Conduction velocity – speed at which the action potential travels down the length of an axon – dictates speed of response ...
Nervous System - AP Bio Take 5
... a “wave” action travels along neuron have to re-set channels so neuron can react again ...
... a “wave” action travels along neuron have to re-set channels so neuron can react again ...
VII. The Nervous System
... a) An action potential arriving at the synaptic terminal at the end of an axon causes Ca+2 to rush through voltage sensitive channels b) The sudden in rush of Ca+2 causes synaptic vesicles which contain neurotransmitters to fuse with the presynaptic membrane releasing neurotransmitters into the syna ...
... a) An action potential arriving at the synaptic terminal at the end of an axon causes Ca+2 to rush through voltage sensitive channels b) The sudden in rush of Ca+2 causes synaptic vesicles which contain neurotransmitters to fuse with the presynaptic membrane releasing neurotransmitters into the syna ...
File
... Activity 34.2 The Human Cerebrum 1. What part of the brain controls muscle activity and maintaining balance. 2. What is the job of the frontal lobe? 3. What is the job of the parietal lobe? Activity 34.3 Structures of the Human Brain Practice the structures of the human brain. Interactive Tutorial 3 ...
... Activity 34.2 The Human Cerebrum 1. What part of the brain controls muscle activity and maintaining balance. 2. What is the job of the frontal lobe? 3. What is the job of the parietal lobe? Activity 34.3 Structures of the Human Brain Practice the structures of the human brain. Interactive Tutorial 3 ...
Nervous System
... Nervous System • Helps you observe and react to the world around you • Neuron= cells of the nervous system ...
... Nervous System • Helps you observe and react to the world around you • Neuron= cells of the nervous system ...
Document
... Node of Ranvier is a section of unmyelinated axon membrane between two Schwann cells. Schwann cell nucleus is pushed to outside of myelin sheath. Myelin consists of multiple layers of cell membrane. ...
... Node of Ranvier is a section of unmyelinated axon membrane between two Schwann cells. Schwann cell nucleus is pushed to outside of myelin sheath. Myelin consists of multiple layers of cell membrane. ...
Myelin oligodendrocyte glycoprotein peptide (236-247 )
... Blocking - Blocking peptide for Anti-Myelin oligodendrocyte glycoprotein antibody (ab28766) ...
... Blocking - Blocking peptide for Anti-Myelin oligodendrocyte glycoprotein antibody (ab28766) ...
Functional Organization of Nervous Tissue
... little movement of K+ or other ions across plasma membrane (Movement of K out through leakage channels = movement of ions is due to attraction to trapped proteins: N.B. leakage channels work in both directions. Movement of ions depends upon concentration gradient.) • Na+, Cl-, and Ca2+ do not have a ...
... little movement of K+ or other ions across plasma membrane (Movement of K out through leakage channels = movement of ions is due to attraction to trapped proteins: N.B. leakage channels work in both directions. Movement of ions depends upon concentration gradient.) • Na+, Cl-, and Ca2+ do not have a ...
Chapter 11: Nervous System
... Weak (subthreshold) stimuli are not relayed into action potentials Strong (threshold) stimuli are relayed into action potentials All-or-none phenomenon – action potentials either happen completely, or not at all ...
... Weak (subthreshold) stimuli are not relayed into action potentials Strong (threshold) stimuli are relayed into action potentials All-or-none phenomenon – action potentials either happen completely, or not at all ...
Chapter 11: Nervous System
... Weak (subthreshold) stimuli are not relayed into action potentials Strong (threshold) stimuli are relayed into action potentials All-or-none phenomenon – action potentials either happen completely, or not at all ...
... Weak (subthreshold) stimuli are not relayed into action potentials Strong (threshold) stimuli are relayed into action potentials All-or-none phenomenon – action potentials either happen completely, or not at all ...
File
... • Sodium-potassium pumps in the nerve cell membrane pumps sodium (Na+) ions out of the cell and potassium (K+) ions into the cell by means of active transport. • As a result, the inside of the cell contains more K+ ions and fewer Na+ ions than the ...
... • Sodium-potassium pumps in the nerve cell membrane pumps sodium (Na+) ions out of the cell and potassium (K+) ions into the cell by means of active transport. • As a result, the inside of the cell contains more K+ ions and fewer Na+ ions than the ...
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.