NS pdf
... 2. Bipolar: 2 processes; one axon and one dendrite at either end of cell body; rare; retina of eye, olfactory mucosa, inner ear 3. Unipolar/pseudounipolar: single process; originate as bipolar then processes fuse; single short process from the cell body that divides like a T; ganglia of PNS as senso ...
... 2. Bipolar: 2 processes; one axon and one dendrite at either end of cell body; rare; retina of eye, olfactory mucosa, inner ear 3. Unipolar/pseudounipolar: single process; originate as bipolar then processes fuse; single short process from the cell body that divides like a T; ganglia of PNS as senso ...
The Central Nervous System
... In many cases, a number of neurons come together at a junction Often, when this occurs, more than one of the neurons bringing a message into the junction must be active to produce an action potential in the neuron leaving the junction Summation is the effect produced by the accumulation of neurotran ...
... In many cases, a number of neurons come together at a junction Often, when this occurs, more than one of the neurons bringing a message into the junction must be active to produce an action potential in the neuron leaving the junction Summation is the effect produced by the accumulation of neurotran ...
Nervous System - healthsciencesMBIT
... Myelin is a white fatty substance formed by a Schwann Cells that wrap the axons around the CNS The fibers are called Myelinated Fibers Nodes of Ranvier are indentations between nearby Schwann Cells The outer cell membrane is the Neurilemma Axons in the brain and spinal cord do not have ...
... Myelin is a white fatty substance formed by a Schwann Cells that wrap the axons around the CNS The fibers are called Myelinated Fibers Nodes of Ranvier are indentations between nearby Schwann Cells The outer cell membrane is the Neurilemma Axons in the brain and spinal cord do not have ...
Chapter 11 Notes
... In many cases, a number of neurons come together at a junction Often, when this occurs, more than one of the neurons bringing a message into the junction must be active to produce an action potential in the neuron leaving the junction Summation is the effect produced by the accumulation of neurotran ...
... In many cases, a number of neurons come together at a junction Often, when this occurs, more than one of the neurons bringing a message into the junction must be active to produce an action potential in the neuron leaving the junction Summation is the effect produced by the accumulation of neurotran ...
CUSTOMER_CODE SMUDE DIVISION_CODE SMUDE
... Fast anterograde transport moves mitochondria, synaptic vesicles, other orgabelles, components of the axolemma, calcium ions, enzymes such as acetylcholinesterase and small molecules such as glucose, amino acids and nucleotides. d. ...
... Fast anterograde transport moves mitochondria, synaptic vesicles, other orgabelles, components of the axolemma, calcium ions, enzymes such as acetylcholinesterase and small molecules such as glucose, amino acids and nucleotides. d. ...
Glial cell - TheTruthAboutStuff.com
... [edit] Function of the glial cell Some glia function primarily as physical support for neurons. Others regulate the internal environment of the brain, especially the fluid surrounding neurons and their synapses, and provide nutrition to nerve cells. Glia have important developmental roles, guiding m ...
... [edit] Function of the glial cell Some glia function primarily as physical support for neurons. Others regulate the internal environment of the brain, especially the fluid surrounding neurons and their synapses, and provide nutrition to nerve cells. Glia have important developmental roles, guiding m ...
1 - PBL Group 14
... These channels open when the cell membrane is depolarised. They form a very important group because they underlie the mechanism of membrane excitability. The most important channels in this group are selective sodium, potassium or calcium channels. Ligand-gated channels These are activated by bindin ...
... These channels open when the cell membrane is depolarised. They form a very important group because they underlie the mechanism of membrane excitability. The most important channels in this group are selective sodium, potassium or calcium channels. Ligand-gated channels These are activated by bindin ...
Nervous tissue Nervous system
... away from the cell body to another neuron or to an effector cell, such as a muscle cell. Each neuron has only one axon, and it may be extremely long. Axons that originate from neurons in the motor nuclei of the CNS (Golgi type I neurons) may travel more than a meter to reach their effector targets, ...
... away from the cell body to another neuron or to an effector cell, such as a muscle cell. Each neuron has only one axon, and it may be extremely long. Axons that originate from neurons in the motor nuclei of the CNS (Golgi type I neurons) may travel more than a meter to reach their effector targets, ...
Slide 1 - Ommbid.com
... Relationship of integral and peripheral membrane proteins to the membrane phospholipid bilayer. Integral membrane proteins (a) have portions of their mass embedded in the membrane that interact directly with the hydrophobic tails of the phospholipids. Other portions of these proteins are exposed on ...
... Relationship of integral and peripheral membrane proteins to the membrane phospholipid bilayer. Integral membrane proteins (a) have portions of their mass embedded in the membrane that interact directly with the hydrophobic tails of the phospholipids. Other portions of these proteins are exposed on ...
Chapter 3: Biological Bases of Behavior
... • Neurons don’t actually touch. Instead they are separated by a microscopic gap between the terminal button of one neuron and the _19_ (2 words) of another neuron. This gap is called the _20_ (2 words). • Electrical signals can’t jump this gap. Instead, the neuron that is sending the message across ...
... • Neurons don’t actually touch. Instead they are separated by a microscopic gap between the terminal button of one neuron and the _19_ (2 words) of another neuron. This gap is called the _20_ (2 words). • Electrical signals can’t jump this gap. Instead, the neuron that is sending the message across ...
Neurons
... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
Chapter 9 - Nervous System
... A nerve impulse is conducted as action potential is reached at the trigger zone and spreads by a local current flowing down the fiber, and adjacent areas of the membrane reach action potential. B. Impulse Conduction (Fig. 9.4) ...
... A nerve impulse is conducted as action potential is reached at the trigger zone and spreads by a local current flowing down the fiber, and adjacent areas of the membrane reach action potential. B. Impulse Conduction (Fig. 9.4) ...
Lecture 7
... o Axons are covered in segments Gaps between segments are called _____________ of Ranvier Myelin-covered areas between nodes of Ranvier are called internodes Myelin and signal conduction o In an unmyelinated nerve fiber, the signal spreads by diffusion of sodium and potassium ions through the pl ...
... o Axons are covered in segments Gaps between segments are called _____________ of Ranvier Myelin-covered areas between nodes of Ranvier are called internodes Myelin and signal conduction o In an unmyelinated nerve fiber, the signal spreads by diffusion of sodium and potassium ions through the pl ...
Exam - McLoon Lab
... B. the initial segment of the axon becomes sufficiently depolarized. C. the voltage-gated sodium (Na+) channels in the initial segment of the axon close. D. the membrane potential for most neurons reaches approximately -65mV. E. More than one of the above is true. 27. The refractory period for a neu ...
... B. the initial segment of the axon becomes sufficiently depolarized. C. the voltage-gated sodium (Na+) channels in the initial segment of the axon close. D. the membrane potential for most neurons reaches approximately -65mV. E. More than one of the above is true. 27. The refractory period for a neu ...
Neurons – A whistle-stop Tour
... 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 the axon. Waiting for the ‘spike’ from the neurotransmitter is a receiver, called the dendrite. Between ...
... 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 the axon. Waiting for the ‘spike’ from the neurotransmitter is a receiver, called the dendrite. Between ...
General Physiology
... • The entire membrane is held together by noncovalent interaction of hydrophobic tails • the structure is quite fluid and not fixed rigidly in place • The bilayer is impenetrable to water soluble molecules and ions • The right ratio of saturated to unsaturated fatty acids keeps the membrane fluid a ...
... • The entire membrane is held together by noncovalent interaction of hydrophobic tails • the structure is quite fluid and not fixed rigidly in place • The bilayer is impenetrable to water soluble molecules and ions • The right ratio of saturated to unsaturated fatty acids keeps the membrane fluid a ...
NG2 cells response to axonal alteration in the spinal cord white
... characterized by multi-branched processes and small cell bodies, are the 4th commonest cell population of non-neuronal cell type in the central nervous system (CNS). They can interact with nodes of Ranvier, receive synaptic input, generate action potential and respond to some pathological stimuli, b ...
... characterized by multi-branched processes and small cell bodies, are the 4th commonest cell population of non-neuronal cell type in the central nervous system (CNS). They can interact with nodes of Ranvier, receive synaptic input, generate action potential and respond to some pathological stimuli, b ...
The Neuron - Austin Community College
... Divergence - the axon terminals of each neuron branch out and synapse with many postsynaptic cells the neuron converts one incoming signal to many simultaneous outgoing signals this spreads out a signal and amplifies it Communication between neurons is not typically a one-to-one event. – Sometim ...
... Divergence - the axon terminals of each neuron branch out and synapse with many postsynaptic cells the neuron converts one incoming signal to many simultaneous outgoing signals this spreads out a signal and amplifies it Communication between neurons is not typically a one-to-one event. – Sometim ...
Neurobiomechanical Influences on Nerve Conduction
... how the structure of nerves help control conduction and the areas that I found difficult. Next I will cover how mechanical stresses affect nerve conduction, how we measure stresses in nerves and how the structure of nerves deals with these stresses. ...
... how the structure of nerves help control conduction and the areas that I found difficult. Next I will cover how mechanical stresses affect nerve conduction, how we measure stresses in nerves and how the structure of nerves deals with these stresses. ...
Class Notes
... Destruction or removal of neurotransmitter prevents continuous stimulation of the postsynaptic neuron. Impulse Processing A. How impulses are processed is dependent upon how neurons are organized in the brain and spinal cord. ...
... Destruction or removal of neurotransmitter prevents continuous stimulation of the postsynaptic neuron. Impulse Processing A. How impulses are processed is dependent upon how neurons are organized in the brain and spinal cord. ...
Neurons Communicate by Neurotransmission
... Instead, that electrical signal triggers chemical changes that can cross the synapse and affect the postsynaptic cell. When the electrical impulse reaches the presynaptic axon terminal, it causes membranous sacs, called vesicles, to move toward the membrane of the axon terminal. When the vesicles re ...
... Instead, that electrical signal triggers chemical changes that can cross the synapse and affect the postsynaptic cell. When the electrical impulse reaches the presynaptic axon terminal, it causes membranous sacs, called vesicles, to move toward the membrane of the axon terminal. When the vesicles re ...
Chapter 17
... i. sensory function, i.e., sensory receptors detect stimuli in the internal and external environments, resulting in sensory information being transmitted by sensory or afferent neurons to the brain or spinal cord ii. integrative function, i.e., interneurons play a role in analyzing the sensory infor ...
... i. sensory function, i.e., sensory receptors detect stimuli in the internal and external environments, resulting in sensory information being transmitted by sensory or afferent neurons to the brain or spinal cord ii. integrative function, i.e., interneurons play a role in analyzing the sensory infor ...
Nervous System Peripheral Nervous System
... Nerves are chords that come in packs Of nerve fibers Sensory, motor, or mixed nerves The spinal chord's a thick bundle runs from the brain Through holes in the backbone Info travels through electric signals nerve impulse Neurotransmitter's released at the junction If enough of the chemical builds up ...
... Nerves are chords that come in packs Of nerve fibers Sensory, motor, or mixed nerves The spinal chord's a thick bundle runs from the brain Through holes in the backbone Info travels through electric signals nerve impulse Neurotransmitter's released at the junction If enough of the chemical builds up ...
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.