Nervous System Ch 10 Notes - Reading Community Schools
... longer process that conducts nerve impulses from the cell body • Terminates at another neuron, muscle or gland • May be up to a meter ...
... longer process that conducts nerve impulses from the cell body • Terminates at another neuron, muscle or gland • May be up to a meter ...
Document
... • Molecules and organelles are moved along axons by motor molecules in two directions: • Anterograde—toward axonal terminal • Examples: mitochondria, membrane components, enzymes • Retrograde—toward the cell body • Examples: organelles to be degraded, signal molecules, viruses, and bacterial toxins ...
... • Molecules and organelles are moved along axons by motor molecules in two directions: • Anterograde—toward axonal terminal • Examples: mitochondria, membrane components, enzymes • Retrograde—toward the cell body • Examples: organelles to be degraded, signal molecules, viruses, and bacterial toxins ...
Summary Sodium pump.
... the membrane to allow their respective ions to cross. Sodium and potassium ions reverse positions by passing through membrane protein channel gates that can be opened or closed to control ion passage. Sodium crosses first. ...
... the membrane to allow their respective ions to cross. Sodium and potassium ions reverse positions by passing through membrane protein channel gates that can be opened or closed to control ion passage. Sodium crosses first. ...
Lecture #21 Date
... A neuron is like a French Fry: high Na+ outside, high K+ (POTassium/potato) inside!!! During the AP, we will turn our axon INSIDE OUT!!! To fire an action potential, we have to be at resting potential (-70 mV), maintained by closed Na+ and K+ channels If enough NT molecules are picked up by dendrite ...
... A neuron is like a French Fry: high Na+ outside, high K+ (POTassium/potato) inside!!! During the AP, we will turn our axon INSIDE OUT!!! To fire an action potential, we have to be at resting potential (-70 mV), maintained by closed Na+ and K+ channels If enough NT molecules are picked up by dendrite ...
Carrie Heath
... you use each one? 7. What experiment could be done to determine that the cell membrane of a neuron is most permeable to Potassium? 8. What experiment could you do to test the effect Sodium has on the amplitudes of peaks of action potentials? What would you find from this experiment? 9. What did Hodg ...
... you use each one? 7. What experiment could be done to determine that the cell membrane of a neuron is most permeable to Potassium? 8. What experiment could you do to test the effect Sodium has on the amplitudes of peaks of action potentials? What would you find from this experiment? 9. What did Hodg ...
Nerve Flash Cards
... How does the signal go through the space? By a chemical transmission. The synaptic knob has vesicles filled with a neurotransmitter that carries the signal. Each type of neuron used particular types of neurotransmitters, so there are 100’s of types. ...
... How does the signal go through the space? By a chemical transmission. The synaptic knob has vesicles filled with a neurotransmitter that carries the signal. Each type of neuron used particular types of neurotransmitters, so there are 100’s of types. ...
Nervous System
... 55. Where are cell bodies of neurons that synapse upon striated muscle? 56. Where are the cell bodies of sensory neurons located? 57. From outermost to innermost, what are the layers of the meninges that cover the brain and ...
... 55. Where are cell bodies of neurons that synapse upon striated muscle? 56. Where are the cell bodies of sensory neurons located? 57. From outermost to innermost, what are the layers of the meninges that cover the brain and ...
Axon Nervous tissue is composed of two types of cells
... Structure of a neuron: • Cell body (perikaryon) ¾ contains the nucleus and most of the cytoplasm. Located mostly in the central nervous system as clusters called nuclei, some found in the peripheral nervous system as groups called ganglia. • Dendrites ¾ neuronal processes that send the impulse towar ...
... Structure of a neuron: • Cell body (perikaryon) ¾ contains the nucleus and most of the cytoplasm. Located mostly in the central nervous system as clusters called nuclei, some found in the peripheral nervous system as groups called ganglia. • Dendrites ¾ neuronal processes that send the impulse towar ...
Chapter 2 Physical structure of a Neuron - Dendrites
... cell causing the neuron to pass its threshold, the voltage gated Na+ channels will open and allow a flood of Na+ to enter the cell. Meanwhile Ka+ is leaking out of the cell as always. This changes the inside of the membrane to a + charge. When the voltage at the membrane reaches +30mV, the Na+ volta ...
... cell causing the neuron to pass its threshold, the voltage gated Na+ channels will open and allow a flood of Na+ to enter the cell. Meanwhile Ka+ is leaking out of the cell as always. This changes the inside of the membrane to a + charge. When the voltage at the membrane reaches +30mV, the Na+ volta ...
The Nervous System
... Myelin is the fatty substance that wraps around axons and protects/insulates them Formed by Schwann Cells in the PNS, gaps called Nodes of Ranvier are left between the myelin Myelination and the Nodes of Ranvier increase the speed that the electrical signal moves down the axon. ...
... Myelin is the fatty substance that wraps around axons and protects/insulates them Formed by Schwann Cells in the PNS, gaps called Nodes of Ranvier are left between the myelin Myelination and the Nodes of Ranvier increase the speed that the electrical signal moves down the axon. ...
Design a Neuron
... Axon terminals – release the electrical impulse as a chemical called a neurotransmitter into the synapse to the next neuron or organ. ...
... Axon terminals – release the electrical impulse as a chemical called a neurotransmitter into the synapse to the next neuron or organ. ...
Neurons - Jordan High School
... Na+ & K+ channels Passive channels always open Chemically gated channels need specific chemicals Voltage-gated channels respond to changes in transmembrane potential ...
... Na+ & K+ channels Passive channels always open Chemically gated channels need specific chemicals Voltage-gated channels respond to changes in transmembrane potential ...
Lectures220Week7Note..
... 3. In this way, electrical signals continue to jump down the axon much faster than they can move down an unmyelinated cell. ...
... 3. In this way, electrical signals continue to jump down the axon much faster than they can move down an unmyelinated cell. ...
Structure and Functions * Physiology of the Nerve
... Principle of dynamic polarization : electrical signals within a nerve flow only in one direction Principle of connectional specificity : nerve cells do not connect indiscriminately with one another to from a network ...
... Principle of dynamic polarization : electrical signals within a nerve flow only in one direction Principle of connectional specificity : nerve cells do not connect indiscriminately with one another to from a network ...
Nervous Tissue
... – Inside (+) ions move from stimuli site to neighboring () areas – Outside (+) ions move toward stimuli site ...
... – Inside (+) ions move from stimuli site to neighboring () areas – Outside (+) ions move toward stimuli site ...
Nervous System Intro
... How are they different from other cells in the body? Have we talked about a model in another cell for propagation of an impulse? ...
... How are they different from other cells in the body? Have we talked about a model in another cell for propagation of an impulse? ...
File - Mr. Haan`s Science
... 5. Action potential – long distance signals of axons a. Usually only neurons and muscles generate these b. Do not decrease in strength w/distance c. All or nothing – stimulus has to overcome threshold ...
... 5. Action potential – long distance signals of axons a. Usually only neurons and muscles generate these b. Do not decrease in strength w/distance c. All or nothing – stimulus has to overcome threshold ...
Nervous System
... CNS nerve fibers with myelin Schwann cells (neurolemmocytes) – surround fibers of the PNS with myelin Satellite cells surround neuron cell bodies with ...
... CNS nerve fibers with myelin Schwann cells (neurolemmocytes) – surround fibers of the PNS with myelin Satellite cells surround neuron cell bodies with ...
Supporting Cells of the Nervous System
... 2) act as phagocytes to clean up worn-out neuron organelles. 3) Electrically insulate neurons by forming a myelin sheath. 4) increase the speed of the action potential (electrochemical message) in those cells that have a myelin sheath. ...
... 2) act as phagocytes to clean up worn-out neuron organelles. 3) Electrically insulate neurons by forming a myelin sheath. 4) increase the speed of the action potential (electrochemical message) in those cells that have a myelin sheath. ...
NEUROGLIA (Glial cells) Supporting cells of the CNS and PNS
... •Metabolizes glucose for metabolic function and ATP production •Reclaims Ach ...
... •Metabolizes glucose for metabolic function and ATP production •Reclaims Ach ...
Ch. 48-49 Nervous System 9e S13
... • Bind to receptors on neurons, muscle cells, or gland cells • Broken down by enzymes or taken back up into surrounding cells • Types of neurotransmitters: – Excitatory: speed up impulses by causing depolarization of postsynaptic membrane – Inhibitory: slow impulses by causing hyperpolarization of p ...
... • Bind to receptors on neurons, muscle cells, or gland cells • Broken down by enzymes or taken back up into surrounding cells • Types of neurotransmitters: – Excitatory: speed up impulses by causing depolarization of postsynaptic membrane – Inhibitory: slow impulses by causing hyperpolarization of p ...
the nervous system
... the neuron membranes • The space between neurons is called the synapse • Neurotransmitters carry impulses across the synapse ...
... the neuron membranes • The space between neurons is called the synapse • Neurotransmitters carry impulses across the synapse ...
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.