concentration is increased? -The resting membrane potential will become more positive when K+ concentration is increased. 2. Explain why the resting membrane potential had the same value in the cell body and in the axon. -The resting membrane potential has the same value in the cell body and the axon because the typical resting membrane potential is the same throughout the entire neuron. 3. Describe what would happen to the resting membrane potential if the sodium-potassium transport pump was blocked
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Name________Amanda Fox BIO 23500-60________ BIO 235 Chapter 10 –Nervous System I 1) Define the following word parts. Ax-‚ axle: axon – cylindrical nerve process that carries impulses away from a neuron cell body. Dendr-‚ tree: dendrite – branched nerve process that serves as the receptor surface of a neuron. Funi-‚ cord‚ rope: funilicus – funiculi of spinal cord or bundle of nerve fibers. Gangli-‚ knot: ganglia – deliver information to the body -lemm‚ rind or peel: neurilemma – sheath
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ribosomes in neurons are called perikaryon. neurofilaments. microglia. neurofibrils. Nissl bodies nissl bodies vThe axon is connected to the soma at the telodendria. synaptic terminal. axon hillock. synapse. collaterals axon hillock Branches that may occur along an axon are called synapses. hillocks. telodendria. synaptic terminals. collaterals collaterals Axons terminate in a series of fine extensions known as dendrites. terminals. synapses. collaterals. telodendria telodendria
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They may be one to several. 2. Axon or Axis - It is a single long process of uniform thickness. The part of cyton from where the axon arises is called Axon hillock and is the most sensitive part of a neuron. An axon does not have Nissls granules‚ golgi complex‚ ribosome‚ etc. So cyton supplies protein to axon. Its cell membrane and cytoplasm are known as axolemma and axoplasm respectively. Axon ends in a group of branches called terminal arborizations (axon terminals or telodendria). They have
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( process information locally or convey information from one region of CNS to another • Types: a. Local interneurons/ internuncial neurons/ local circuit neurons – short axon Golgi type II (greatly outnumber type I in CNS) b. Relay/ principla/ projection neurons – long axon Golgi type I - Wide variation in size and infinite variety in arrangement of processes of neurons but similar structure when located in a given region |Bipolar neurons
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extracellular K+ 3. Which of the following has the most negative voltage? a. Between the outside of the axon and outside the cell body with control K+ ECF b. Between the outside of the axon and outside the cell body with High K+ ECF c. Between the inside of the axon and the outside of the axon with control K+ ECF d. Between the inside of the axon and the outside of the axon with High K+ ECF Activity 2 Pre-Lab Quiz 1 = c; 2= e; 3 = c; 4 = c Stop& Think Questions The adequate
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are the two types of fast axonal transport? 5. What are the two types of neuroglia in PNS? 7. What do brain tumors arise from? 8. What do schawnn cells do in PNS? 9. What does the neuroglia or glial cells do? 10. What guides microtubules along axon? 11. What is anaxonic neuron? 12. What is anterograde transport? 13. What is astrocytes? 14. What is axonal transport or axoplasmic flow? 1. What are schwann cells? envelope nerve fibers in PNS. produce a myelin sheath multipolar‚ bipolar
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its members‚ and stakeholders for the future by fostering innovation and creativity through effective messaging. He was able to accomplish this by implementing a portal for the employees called “MyBlueprint”‚ and also my merging with a company called AXON. Different Ways Messaging Was Used Instead of holding a live Blueprint meeting‚ HCL decided to have all three hundred of their managers record their business plans‚ which would then be posted on the MyBlueprint portal. Once all of the business
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which only one protoplasmic process (neurite) extends from the cell body. Most neurons are multipolar‚ generating several dendrites and an axon: unipolar neurons are exceptions to this rule. These would be primary sensory neurons such as the ones found in the dorsal root ganglion. A multipolar neuron is a type of neuron that possesses a single (usually long) axon and many dendrites‚ allowing for the integration of a great deal of information from other neurons. These dendritic branches can also emerge
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a projection called an axon‚ which conduct the nerve signal. At the other end of the axon‚ the axon terminals transmit the electro-chemical signal across a synapse (the gap between the axon terminal and the receiving cell). The word "neuron" was coined by the German scientist Heinrich Wilhelm Gottfried von Waldeyer-Hartz in 1891 (he also coined the term "chromosome"). The axon‚ a long extension of a nerve cell‚ and take information away from the cell body. Bundles of axons are known as nerves or
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