and the type of potential dependent on the following types of ion channels: Channels Areas on the Neuron Type of Potential Passive Dendrites‚ Cell body‚ & Axon Resting membrane potential Chemically gated Dendrites & Cell body Synaptic Potential Voltage gated Axon Hillock & Axons Action Potential 8. From the quiz‚ place an “X” by the characteristics of voltage-gated sodium channels. _____ Always open __X__ Found along the axon __X__ Important for action potential __X__ Opened and
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In the 196o’s a policy that created jobs‚ promotions‚ government contracts‚ admission to school and other benefits to minority groups and women. This policy was named Affirmative Action. Affirmative action goes back when discrimination was against african americans‚ native americans‚ hispanics‚ and women‚so to protect their rights‚ it was created. The federal government required for both states and local governments to have this programs. The policy also had to be followed by organizations and
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from hundreds‚ even thousands of other neurons. Each signal is either excitatory or inhibitory. Excitatory signals increase the likelihood of an action potential happening‚ inhibitory make an action potential in a nerve cell less likely. The action potential is a nerve impulse. Once the excitatory signals over power the inhibitory signals and action potential is triggered. So the neuron then fires‚ sending that impulse down its axon‚ transmitting information to another cell. The firing of a neuron isn’t
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fires an impulse‚ called the action potential‚ down the axon. The impulse is protected and sped along its way by the myelin sheath‚ which is a layer of fatty tissue that surrounds the axon. Each neuron receives signals from many other neurons. Some signals are excitatory‚ and some are inhibitory. If the excitatory signals minus the inhibitory signals exceed a certain level‚ called the threshold‚ then the signals trigger an action potential. When the action potential reaches the axon terminals‚ called
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iii. Interneurons: V. Membrane Potentials: a. Basic Principles of Electricity: i. Voltage: ii. Potential: iii. Current: iv. Resistance: v. Ohm’s law: b. Role of Membrane Ion Channels: i. Leakage‚ or nongated channels: ii. Chemically gated‚ or ligand-gated‚ channels: iii. Voltage-gated channels: iv. Mechanically gated channels: c. The Resting Membrane Potential: i. Resting membrane potential: 1. Polarized: ii. Differences
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is stored within the sarcoplasmic reticulum The bundle of dense regular connective tissue that attaches a skeletal muscle to bone is called a(n) tendon. In excitation-contraction coupling‚ the transverse tubules function to conduct an action potential into the sarcoplasmic reticulum. During muscle contraction‚ the I band shortens or narrows What event causes troponin to regain its original shape in muscle relaxation? return of Ca2+ into the sarcoplasmic reticulum A storage form
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system control the bodies conscious action whilst neurons in the automatic nervous system control involuntary action which keeps the heart pumping and internal processes working. The soma of a neuron is electrically charged reacting to electrical disturbances from either sensory or neighbouring neurons via it ’s dendrites. These brief changes of electrical voltage (action potentials) are conducted away from the soma and along the neurons axon. Action potentials travel quickly to the tip of the axon
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| | | | Question 2 2 out of 2 points | | | |[pic] |The typical value for the resting membrane potential is _________? | | | | | |Answer | | | | | |Selected Answer:
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(1) Is affirmative action policy morally defensible? Explain. Affirmative action refers to the policy being implemented to create equality within racism‚ religion‚ sexuality and colour.It is being discussed in South Africa that the policies focus on employment‚ education and health programs that disadvanted people and women have equal opportunities in the work place. President John Kennedy of United Nations signed it on March 1961 that government employers "not discriminate against‚ any employee
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branch many times. One of the structures‚ however‚ is very thin and very long. This latter structure is most likely the neuron’s __________ ‚ which carries the __________. a. dendrite; efferent signal b. dendrite; afferent signal c. axon; action potential d. axon; receptors 2. If the myelin sheathing on neurons is absent or removed in a given individual‚ he or she will exhibit difficulties in speaking‚ vision‚ and balance because without myelin the a. quantity of neurotransmitters released
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