which of the following functions does the myelin sheath perform for a nerve cell ?
which of the following functions does the myelin sheath perform for a nerve cell ?
Homework Answers
it is substance which is fatty white and it is surround the axon,its functions is to form an electrically insulating layer
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which of the following functions does the myelin
sheath perform for a nerve cell ?
Label the parts of a peripheral nerve shown in cross-section. Myelin sheath Node of Ranvier Dendrite...
Label the parts of a peripheral nerve shown in cross-section. Myelin sheath Node of Ranvier Dendrite Peripheral nerve Schwann cell Sensory receptor Axon Fascicle Perineurium Reset
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are...
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are composed of a sphingosine molecule, a fatty acid, and phosphorylcholine, the structures of which are shown. Delete atoms and charges, and add bonds as necessary to form a sphingomyelin Select Draw Rings Groups More Erase O P OH wwwwtt OH NH, OH R
Changing the thickness of the myelin sheath surrounding an axon changes its capacitance and thus the...
Changing the thickness of the myelin sheath surrounding an axon changes its capacitance and thus the conduction speed. A myelinated nerve fiber has a conduction speed of 55 m/s . If the spacing between nodes is 1.1 mm and the resistance of segments between nodes is 26 MΩ , what is the capacitance of each segment? A. C = 1.5×10^-13 F B. C = 7.7x10^-13 F C. C = 5.4x10^-12 F D. C = 1.5x10^-11F
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are...
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are composed of a sphingosine molecule, a fatty acid, and phosphorylcholine, the structures of which are shown. Delete atoms and charges, and add bonds as necessary to form a sphingomyelin. Select Draw Rings Groups More Erase OH mmer In OH 0 -- P- OH @ 2.a What types of bonds are formed?
The speed with which nerve impulses travel is determined in large part by the characteristic time...
The speed with which nerve impulses travel is determined in large part by the characteristic time constant τ=RC of the circuit formed by the resistivity of the axon and the capacitance of its wall. The resistance of a 1.00-mm-long segment of an axon is 26.5 MΩ. A) For nerve axons with no protective myelin sheath, the wall capacitance is about 3.24×10−10F for each segment of length L=1.00mm. Find the speed of the nerve impulses given by v=L/τ. B) Many axons...
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are...
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are composed of a sphingosine molecule, a fatty acid, and phosphorylcholine, the structures of which are shown. Delete atoms and charges, and add bonds as necessary to form a sphingomyelin. Select Draw Rings Groups More MWWW. www . OH 0- P C 5 What types of bonds are formed? O o phosphodiester bond disulfide bond amide bond peptide bond salt bridge
41. Schwann cells are associated with: a. Nodes of Ranvier b. Myelin sheath c. Unmyelinated axons d. Synaptic cleft...
41. Schwann cells are associated with: a. Nodes of Ranvier b. Myelin sheath c. Unmyelinated axons d. Synaptic cleft 42. A synapse does not involve the: a. Presynaptic neuron b. Postsynaptic neuron c Cell body d. Involvement of calcium 43. Which of following is not a connective tissue? a cardiac muscle b. cartilage c blood d. adipose 44. The type of gland that secretes substances into circulatory system are called: a. Exocrine glands b. Endocrine glands c. Simple glands d....
Why is this incorrect? Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of...
Why is this incorrect?
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are composed of a sphingosine molecule, a fatty acid, and phosphorylcholine, the structures of which are shown. Delete atoms and charges, and add bonds as necessary to form a sphingomyelin. Select Draw Rings Groups More Erase www.it NH
Which of the following parts of a neuron receive and process information? Cell Body Dendrite Synapse...
Which of the following parts of a neuron receive and process information? Cell Body Dendrite Synapse Axon Which of the following characteristics is common to oligodendrocytes and Schwann cells? Both from a myelin sheath around a single axon Both provide myelination Both can interact with multiple cells Both are located in the CNS
Which part of the illustrations anatomy (below) would be affected by the disease, multiple sclerosis? Dendrite...
Which part of the illustrations anatomy (below) would be affected by the disease, multiple sclerosis? Dendrite Axon terminal Cell body Node of Ranvier Axon Schwann cell Myelin sheath Nucleus Dendrite Myelin sheath O Axon terminal Cell body Nucleus
Label the parts of a peripheral nerve shown in cross-section. Myelin sheath Node of Ranvier Dendrite Peripheral nerve Schwann cell Sensory receptor Axon Fascicle Perineurium Reset
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are composed of a sphingosine molecule, a fatty acid, and phosphorylcholine, the structures of which are shown. Delete atoms and charges, and add bonds as necessary to form a sphingomyelin Select Draw Rings Groups More Erase O P OH wwwwtt OH NH, OH R
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are composed of a sphingosine molecule, a fatty acid, and phosphorylcholine, the structures of which are shown. Delete atoms and charges, and add bonds as necessary to form a sphingomyelin. Select Draw Rings Groups More Erase OH mmer In OH 0 -- P- OH @ 2.a What types of bonds are formed?
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are composed of a sphingosine molecule, a fatty acid, and phosphorylcholine, the structures of which are shown. Delete atoms and charges, and add bonds as necessary to form a sphingomyelin. Select Draw Rings Groups More MWWW. www . OH 0- P C 5 What types of bonds are formed? O o phosphodiester bond disulfide bond amide bond peptide bond salt bridge
41. Schwann cells are associated with: a. Nodes of Ranvier b. Myelin sheath c. Unmyelinated axons d. Synaptic cleft 42. A synapse does not involve the: a. Presynaptic neuron b. Postsynaptic neuron c Cell body d. Involvement of calcium 43. Which of following is not a connective tissue? a cardiac muscle b. cartilage c blood d. adipose 44. The type of gland that secretes substances into circulatory system are called: a. Exocrine glands b. Endocrine glands c. Simple glands d....
Why is this incorrect?
Sphingomyelins are sphingolipids found in cell membranes and the myelin sheaths of nerve cells. Sphingomyelins are composed of a sphingosine molecule, a fatty acid, and phosphorylcholine, the structures of which are shown. Delete atoms and charges, and add bonds as necessary to form a sphingomyelin. Select Draw Rings Groups More Erase www.it NH
Which part of the illustrations anatomy (below) would be affected by the disease, multiple sclerosis? Dendrite Axon terminal Cell body Node of Ranvier Axon Schwann cell Myelin sheath Nucleus Dendrite Myelin sheath O Axon terminal Cell body Nucleus
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