Homework Answers
(CORRECT ANSWER) (MYELIN SHEATH)
(EXPLANATION FOR CORRECT ANSWER) Multiple sclerosis is an autoimmune disorder in which the immune system attacks the myelin sheath. Myelin sheath is an insulating layer around the axon whose function is to promote and accelerate the transmission of electrical impulses along the nerve. Hence this option is correct.
(EXPLANATION FOR INCORRECT ANSWER) (DENDRITE) The function of the dendrite is to receive communications from other cells. As this is not affected during multiple sclerosis, hence this option is incorrect.
(EXPLANATION FOR INCORRECT ANSWER) (AXON TERMINAL) Axon terminals are the ends of the axon. These are bulb-like in shape. As this is not affected during multiple sclerosis, hence this option is incorrect.
(EXPLANATION FOR INCORRECT ANSWER) (CELL BODY) The cell body is also called soma and it is where the nucleus is confined. As this is not affected during multiple sclerosis, hence this option is incorrect.
(EXPLANATION FOR INCORRECT ANSWER) (NUCLEUS) The nucleus is present in the soma of the neuron. As this is not affected during multiple sclerosis, hence this option is incorrect.
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Which part of the illustrations anatomy (below) would be affected by the disease, multiple sclerosis? Dendrite...
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
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
1. The main receptive surface of neuron at a synapse for nerve Impulse transmission is: a....
1. The main receptive surface of neuron at a synapse for nerve Impulse transmission is: a. Axon neurotransmitter receptors b. Dendrite neurotransmitter receptors C. Nissl bodies receptors d. Axon terminal receptors 2. Two types of cells in nervous system are: a. Axons & dendrites b. Motor and sensory neurons c. Neurons & neuroglia d. Schwann cells & microglia 3. Myelin is rich in : a. Lipids b. Carbohydrates c. Nucleic acids d. Salts 4. Synaptic knobs are at end of:...
3. Label each of the parts of a neuron below. Include the axon, axon terminal, dend...
3. Label each of the parts of a neuron below. Include the axon, axon terminal, dend on below. Include the axon, axon terminal, dendrite, cell body, myelin sheath, and nucleus. bul 4. Which portion of the neuron receives incoming signals? Which part conducts signals away from the cell body? 5. Compare the function of sensory neurons, motor neurons, and interneurons 6. Label depolarization, hyperpolarization, peak action potential, resting potential, Na/K ATP pump. +30 Membrane potential (mv) Time 8. What are...
Label the below digram of the human neuron 16 points A D B I TI G...
Label the below digram of the human neuron 16 points A D B I TI G E G F H D m A С B Dendrites O Schwarn's cell Axon Myelin sheath Ranvier's node ОО O O Cell Body (soma) o o O O 1. F E A B с D E F G H Dendrites о О О Schwarn's cell O O O ОО Axon O О. ОО Myelin sheath ОО Ranvier's node ООО О Cell Body (soma) О...
d. Multiple sclerosis (MS) is a disease in which the myelin sheaths are destroyed in the...
d. Multiple sclerosis (MS) is a disease in which the myelin sheaths are destroyed in the brain and spinal cord. With what process does this interfere and what would be the consequences? e. Discuss the two main factors to influence conduction speed of an action potential. BONUS: (2 points) Does a local potential guarantee the creation of an action potential? Explain.
An axon is a long, slender projection of a nerve cell, or neuron e , that...
An axon is a long, slender projection of a nerve cell, or neuron e , that typically conducts electrical impulses e away from the neuron's cell body e . Capacitance (C) is the ability of a system to store an electric charge. In this activity, you'll use information given about these fascinating structures to calculate the capacitance of an axon. Αxon Axon terminal Dendrite Node of Ranvier Soma Axon Schwann cell Myelin sheath Nucleus plasma membrane cytoplasm, a conducting liquid...
Multiple Sclerosis (MS) is an autoimmune disorder. Somewhere between 250,000 and 350,000 people in the US...
Multiple Sclerosis (MS) is an autoimmune disorder. Somewhere between 250,000 and 350,000 people in the US alone have been diagnosed with MS, most when they are between 20 to 40 years old. The disease can be quite debilitating. 1. Myelination and neurons affected by MS are in which area of the nervous system: CNS or PNS? Therefore, the type of myelinating cells that are attacked in MS are: 2. What are the plaques of MS and how do they happen?...
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....
Sorry for posting more than one question -- someone said they needed the rest of the...
Sorry for posting more than one question -- someone said they
needed the rest of the questions to better understand how to answer
one!
Question 1 1 pts Using the data provided in the table below for an "average" axon, we found in the previous lab and in the pre-lab questions for this lab) that the membrane resistance and membrane capacitance were about 44M0 = 44 x 102 and 60pF = 60 x 10-12 F, respectively, for a membrane segment...
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
1. The main receptive surface of neuron at a synapse for nerve Impulse transmission is: a. Axon neurotransmitter receptors b. Dendrite neurotransmitter receptors C. Nissl bodies receptors d. Axon terminal receptors 2. Two types of cells in nervous system are: a. Axons & dendrites b. Motor and sensory neurons c. Neurons & neuroglia d. Schwann cells & microglia 3. Myelin is rich in : a. Lipids b. Carbohydrates c. Nucleic acids d. Salts 4. Synaptic knobs are at end of:...
3. Label each of the parts of a neuron below. Include the axon, axon terminal, dend on below. Include the axon, axon terminal, dendrite, cell body, myelin sheath, and nucleus. bul 4. Which portion of the neuron receives incoming signals? Which part conducts signals away from the cell body? 5. Compare the function of sensory neurons, motor neurons, and interneurons 6. Label depolarization, hyperpolarization, peak action potential, resting potential, Na/K ATP pump. +30 Membrane potential (mv) Time 8. What are...
Label the below digram of the human neuron 16 points A D B I TI G E G F H D m A С B Dendrites O Schwarn's cell Axon Myelin sheath Ranvier's node ОО O O Cell Body (soma) o o O O 1. F E A B с D E F G H Dendrites о О О Schwarn's cell O O O ОО Axon O О. ОО Myelin sheath ОО Ranvier's node ООО О Cell Body (soma) О...
d. Multiple sclerosis (MS) is a disease in which the myelin sheaths are destroyed in the brain and spinal cord. With what process does this interfere and what would be the consequences? e. Discuss the two main factors to influence conduction speed of an action potential. BONUS: (2 points) Does a local potential guarantee the creation of an action potential? Explain.
An axon is a long, slender projection of a nerve cell, or neuron e , that typically conducts electrical impulses e away from the neuron's cell body e . Capacitance (C) is the ability of a system to store an electric charge. In this activity, you'll use information given about these fascinating structures to calculate the capacitance of an axon. Αxon Axon terminal Dendrite Node of Ranvier Soma Axon Schwann cell Myelin sheath Nucleus plasma membrane cytoplasm, a conducting liquid...
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....
Sorry for posting more than one question -- someone said they
needed the rest of the questions to better understand how to answer
one!
Question 1 1 pts Using the data provided in the table below for an "average" axon, we found in the previous lab and in the pre-lab questions for this lab) that the membrane resistance and membrane capacitance were about 44M0 = 44 x 102 and 60pF = 60 x 10-12 F, respectively, for a membrane segment...
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