one finding associated with Alzheimer' disease is the presence of neurofibrillar tangles seen within nerves cells, tangles which are not present in normal nerves cells. This is an example of which division of anatomy ?
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one finding associated with Alzheimer' disease is the presence of neurofibrillar tangles seen within nerves cells, tangles which are not present in normal nerves cells. This is an example of which division of anatomy ?
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- This is a biology question regarding nerve impulses. Neurofibromatosis type 1 is a condition where tumours can grow in the nerves near the skin. The growth of tumours prevents the action potentials from quickly travelling through the neurons. Identify the nerve structure from the image below and the division of the nervous system affected by neurofibromatosis type 1. CNS = Central Nervous System PNS = Peripheral Nervous System Select one: a. Nerve Structure Division of Nervous System 3 PNS b. Nerve Structure Division of Nervous System 4 CNS c. Nerve Structure Division of Nervous System 5 PNS d. Nerve Structure Division of Nervous System 1 CNSA few nights a week, Jane wakes up in the middle of the night with tingling and numbness in her right hand. Joanne works at a desk all day and she notices a sharp, and sometimes throbbing, pain in her feet bilaterally after a long workday. She was thinking that her symptoms were just part of aging, but wonders if it could be abnormal. She has no history of major trauma, alcoholism, cancer, or inherited diseases.How might Joanne’s lower extremity symptoms be related to her job? Briefly describe how ergonomics might be related to the pathophysiology she is experiencing.The image attached below depicts a histological slice of human cerebral cortex tissue.Using knowledge of the central nervous system and various cell-cell interactions, identify thekey type(s) of cell junctions present in this image (for example, tight junctions, gap junctions, and adherens junctions/desmosomes). Briefly describe the function of these celljunctions. How would the function of the central nervous system be impaired if your above identified celljunctions were disrupted?
- Schwann cells are a type of glial cell found in the nervous system. In addition to the conduction of nerve impulses, the outermost layer called neurilemma aids in nerve development and regeneration. Which of the following explains why the neurons in the brain cannot repair damage like the neurons in your hands or feet can?Schwann cells are a type of glial cell found in the nervous system. In addition to the conduction of nerve impulses, the outermost layer called neurilemma aids in nerve development and regeneration. Which of the following explains why the neurons in the brain cannot repair damage like the neurons in your hands or feet can? a. Neurons in the central nervous system lack neurilemma of Schwann cells. b. Neurons in the peripheral nervous system are surrounded by grey matter. c. Axons of the peripheral nervous system lack neurilemma of Schwann cells. d. Neurons in the central nervous system are surrounded by white matter.Schwann cells are a type of glial cell found in the nervous system. In addition to the conduction of nerve impulses, the outermost layer called neurilemma aids in nerve development and regeneration. After examining the image below, can you explain why brain cells have limited capacity for regeneration? Human Brain Cross Section. Rajalakshmi L Nair et al. Select one: a. Neurons in the central nervous system lack neurilemma of Schwann cells. O b. Neurons in the central nervous system are surrounded by white matter. c. Axons of the peripheral nervous system lack neurilemma of Schwann cells. d. Neurons in the peripheral nervous system are surrounded by grey matter.
- A new drug is developed that prevents the demyelination occurring in the progress of multiple sclerosis. The drug protects the cells responsible for the synthesis and maintenance of myelin in the central nervous system. These cells are most likely which of the following? (A) Astrocyte (B) Ependymal cell (C) Microglial cell Oligodendrocyte (E) Schwann cellDemyelination is the loss of myelin from neurones that are normally myelinated. Multiple sclerosis is a disease in which demyelination occurs in neurones involved in coordinating muscle movement. Using your knowledge of nerve impulse generation and propagation, explain how nerve impulse generation and propagation would be affected in people who have multiple sclerosis. The explanation needs to be in the form of a step by step sequence of annotated drawings. This could be in the form of an annotated cartoon/picture strip. Compare this to nerve impulse generation and propagation in an individual who does not have multiple sclerosis.Name two cell types in neural tissue.
- Neurofibromatosis is a genetic disorder characterized by the growth of tumours called neurofibromas around some neurons. Neurofibromas result from the uncontrolled growth of cells that produce the myelin sheath. List the cells that would be affected by these neurofibromas and include how this may affect proper functioning of the neuron.A hypothetical organ has the following functional requirements : (1) the ability to resist surface abrasion and mechanical stresses;(2) the ability to contract involuntarily when stimulated by cells of the nervous system; and (3) the ability to resist tension in many different planes of force. The organ needs one tissue to carry out each of these requirements, and it also needs one tissue to " glue" all other tissues together, and one tissue to stimulate the contracting cells. What are the five tissues that will make up this hypothetical organ ? Justify your choices .Please note these are all one question group and should be answered as such! Which of the following statements accurately defines epineurium? A. Fluid-filled space at a synapse through which neurotransmitters diffuse B. A vesicle containing neurotransmitters in the axon terminal of a neuron C. The CT sheath that binds together the groups of fascicles, blood vessels, and lymphatic vessels in a peripheral nerve D. The branch of the ANS that adapts the body for rest and digestion Which of the following statements accurately defines sacral plexus? A. The ventral rami of C1–C4 (and a small contribution from C5) that serve the head and neck B. The ventral rami of L1–L4 that serve the pelvis and lower limb C. The ventral rami of C5–T1 that serve the upper limb D. The ventral rami of L4–S4 that serve the pelvis and lower limb