Notes Outline I (Part I)
... __________________ and in the PNS are called ___________________. 18. _____________________ receive imput from other neurons (axons). 19. Axons and dendrites are called ___________________ ________________. 20. Very long axons are otherwise know as ________________ _______________. 21. Movement of s ...
... __________________ and in the PNS are called ___________________. 18. _____________________ receive imput from other neurons (axons). 19. Axons and dendrites are called ___________________ ________________. 20. Very long axons are otherwise know as ________________ _______________. 21. Movement of s ...
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 ...
Neuron & the Nervous Systems & Reflex
... Acts as an electrical insulator Not present on all cells When present, increases the speed of neural signals down the axon allowing the action potential to “jump” to each Node of Ranvier - like a paved highway (see video below to compare mylenated ...
... Acts as an electrical insulator Not present on all cells When present, increases the speed of neural signals down the axon allowing the action potential to “jump” to each Node of Ranvier - like a paved highway (see video below to compare mylenated ...
The Nervous System The master and
... _________________ matter – dense collection of myelinated fibers _________________ matter – contains mostly unmyelinated fibers Classification of Neurons Functional classification _________________ or _________________ – carry messages from sensory receptors to the CNS. Have dendrite endings associa ...
... _________________ matter – dense collection of myelinated fibers _________________ matter – contains mostly unmyelinated fibers Classification of Neurons Functional classification _________________ or _________________ – carry messages from sensory receptors to the CNS. Have dendrite endings associa ...
File
... - cell body (soma) - contains nucleus - dendrites - the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body - axon - the extension of a neuron that carries information (electrical impulses called action potentials) away from the cell body - can be ...
... - cell body (soma) - contains nucleus - dendrites - the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body - axon - the extension of a neuron that carries information (electrical impulses called action potentials) away from the cell body - can be ...
Neurons Notes
... - cell body (soma) - contains nucleus - dendrites - the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body - axon - the extension of a neuron that carries information (electrical impulses called action potentials) away from the cell body - can be ...
... - cell body (soma) - contains nucleus - dendrites - the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body - axon - the extension of a neuron that carries information (electrical impulses called action potentials) away from the cell body - can be ...
INTEGUMENTARY SYSTEM
... Na+ Channels Close, K+ Channels Open & K+ Diffuses Out of Neuron Results In Repolarization Action Potential = Depolarization + Repolarization (dendrite to axon) Repolarization Required before another Action Potential Sodium-Potassium Pump moves Na+ out & K+ in (Requires Energy) ...
... Na+ Channels Close, K+ Channels Open & K+ Diffuses Out of Neuron Results In Repolarization Action Potential = Depolarization + Repolarization (dendrite to axon) Repolarization Required before another Action Potential Sodium-Potassium Pump moves Na+ out & K+ in (Requires Energy) ...
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. ...
The Nervous System: Neural Tissue
... 1. __________________ - cell body a. contains all organelles except centrioles (thus neurons are not able to reproduce) b. __________________ __________________– complex rough ER network with many ribosomes. 2. __________________ – typically shorter processes that convey impulses toward the soma. 3. ...
... 1. __________________ - cell body a. contains all organelles except centrioles (thus neurons are not able to reproduce) b. __________________ __________________– complex rough ER network with many ribosomes. 2. __________________ – typically shorter processes that convey impulses toward the soma. 3. ...
Nervous System
... 8. What are Nissl bodies (also called Nissl substance) and what stains reveal Nissl bodies? ...
... 8. What are Nissl bodies (also called Nissl substance) and what stains reveal Nissl bodies? ...
nervous system worksheet
... ..................................... 10. The sense organ or cells that receive stimuli from within and outside the body. ..................................... 11. The reaction to a stimulus by a muscle or gland. ..................................... 12.The part of the nerve cell containing the nucl ...
... ..................................... 10. The sense organ or cells that receive stimuli from within and outside the body. ..................................... 11. The reaction to a stimulus by a muscle or gland. ..................................... 12.The part of the nerve cell containing the nucl ...
kumc 05 nervous system review student
... Usually several to many. Relatively short. Often branched. Have receptors for neurotransmitters. Conduct local potentials. ...
... Usually several to many. Relatively short. Often branched. Have receptors for neurotransmitters. Conduct local potentials. ...
3-2_UniqueFt_of_Neurons
... axon: one long (depends on the specie and the service site) cable-like projection that only branches at its destination, where it emerges (axon hillock) from the perikaryon it shows high density of voltage-dependent sodium channels as this is the place where the action potential starts and the axon ...
... axon: one long (depends on the specie and the service site) cable-like projection that only branches at its destination, where it emerges (axon hillock) from the perikaryon it shows high density of voltage-dependent sodium channels as this is the place where the action potential starts and the axon ...
Neurons, neurotransmitters and other stuff we did last term…
... Introduction This is mostly review for those of you that took 2606 The nervous system is made up, basically, of two types of cells ...
... Introduction This is mostly review for those of you that took 2606 The nervous system is made up, basically, of two types of cells ...
Chapter 2 quiz level - easy topic: neurons
... 2) The human brain contains somewhere between ________ and ________ neurons. A) 10 billion; 100 billion B) 10 million; 20 million C) 50 million; 100 million D) 2 trillion; 5 trillion ...
... 2) The human brain contains somewhere between ________ and ________ neurons. A) 10 billion; 100 billion B) 10 million; 20 million C) 50 million; 100 million D) 2 trillion; 5 trillion ...
Chapter 2: Brain Development
... •Migration prominent in cortex •Mechanisms •Neurons migrate along fibers to destination •inhibitory interneurons migrate tangentially ...
... •Migration prominent in cortex •Mechanisms •Neurons migrate along fibers to destination •inhibitory interneurons migrate tangentially ...
Nervous System - EMTStudyCenter.com
... 6. The different charge between the outside and the inside of a neuron at rest is called action potential. synaptic potential. resting membrane potential. equilibrium potential. 7. The stage in an action potential that immediately follows depolarization is polarization. repolarization. threshold. th ...
... 6. The different charge between the outside and the inside of a neuron at rest is called action potential. synaptic potential. resting membrane potential. equilibrium potential. 7. The stage in an action potential that immediately follows depolarization is polarization. repolarization. threshold. th ...
Lab 9 Nervous histology post lab answer key 2010
... biosynthetic center of a neuron; contains the nucleus, nucleolus and ribosomes ...
... biosynthetic center of a neuron; contains the nucleus, nucleolus and ribosomes ...
AP – All or nothing
... • What factors affect the speed of conductance of an action potential? • What is the refractory period? • What is meant by the “all or nothing” principle? ...
... • What factors affect the speed of conductance of an action potential? • What is the refractory period? • What is meant by the “all or nothing” principle? ...
Nerve Cells and Nerve Impulses Quiz Answers
... a) one dendrite and many axons covered with a myelin sheath interrupted by nodes of Ranvier b) many dendrites and one axon covered with a myelin sheath interrupted by nodes of Ranvier c) many dendrites and one axon covered with a myelin sheath interrupted by the synapse d) one dendrite and many axon ...
... a) one dendrite and many axons covered with a myelin sheath interrupted by nodes of Ranvier b) many dendrites and one axon covered with a myelin sheath interrupted by nodes of Ranvier c) many dendrites and one axon covered with a myelin sheath interrupted by the synapse d) one dendrite and many axon ...
Chapter 2A Practice Test
... 17. The'axons of certain neurons are covered by a layer of fatty tissue that helps speed neural transmission. This tissue is: A) the glia. B) the myelin sheath. C) acefylcholine. D) an endorphin. ...
... 17. The'axons of certain neurons are covered by a layer of fatty tissue that helps speed neural transmission. This tissue is: A) the glia. B) the myelin sheath. C) acefylcholine. D) an endorphin. ...
Neuron Structure and Function
... System Sensory receptors: Nerves that carry impulses towards CNS ...
... System Sensory receptors: Nerves that carry impulses towards CNS ...
Axon
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An axon (from Greek ἄξων áxōn, axis), also known as a nerve fibre, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body. The function of the axon is to transmit information to different neurons, muscles and glands. In certain sensory neurons (pseudounipolar neurons), such as those for touch and warmth, the electrical impulse travels along an axon from the periphery to the cell body, and from the cell body to the spinal cord along another branch of the same axon. Axon dysfunction causes many inherited and acquired neurological disorders which can affect both the peripheral and central neurons.An axon is one of two types of protoplasmic protrusions that extrude from the cell body of a neuron, the other type being dendrites. Axons are distinguished from dendrites by several features, including shape (dendrites often taper while axons usually maintain a constant radius), length (dendrites are restricted to a small region around the cell body while axons can be much longer), and function (dendrites usually receive signals while axons usually transmit them). All of these rules have exceptions, however.Some types of neurons have no axon and transmit signals from their dendrites. No neuron ever has more than one axon; however in invertebrates such as insects or leeches the axon sometimes consists of several regions that function more or less independently of each other. Most axons branch, in some cases very profusely.Axons make contact with other cells—usually other neurons but sometimes muscle or gland cells—at junctions called synapses. At a synapse, the membrane of the axon closely adjoins the membrane of the target cell, and special molecular structures serve to transmit electrical or electrochemical signals across the gap. Some synaptic junctions appear partway along an axon as it extends—these are called en passant (""in passing"") synapses. Other synapses appear as terminals at the ends of axonal branches. A single axon, with all its branches taken together, can innervate multiple parts of the brain and generate thousands of synaptic terminals.