Immune System - Anatomy
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Which of the following cells is stimulated to release histamine?
Which of the following cells is stimulated to release histamine?
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Mast cell functions in allergic responses by release histamine and other chemicals that promote inflammation. Macrophages are part of the innate immune system and function to engulf and remove debris. Neutrophils are also part of the innate immune system and have macrophagic properties, especially when fighting bacterial infection. Natural killer cells bind to and destroy pathogens without the use of antigens.
Mast cell functions in allergic responses by release histamine and other chemicals that promote inflammation. Macrophages are part of the innate immune system and function to engulf and remove debris. Neutrophils are also part of the innate immune system and have macrophagic properties, especially when fighting bacterial infection. Natural killer cells bind to and destroy pathogens without the use of antigens.
Which of the following is a sign of inflammation?
Which of the following is a sign of inflammation?
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Calor—or redness—is associated with increased blood flow, which can result from inflammation. During an inflammation response, histamine release results in vasodilation and increased bloodflow, which can cause the infalmmed area to appear red.
Calor—or redness—is associated with increased blood flow, which can result from inflammation. During an inflammation response, histamine release results in vasodilation and increased bloodflow, which can cause the infalmmed area to appear red.
Which of the following tests best detects antigens in serum?
Which of the following tests best detects antigens in serum?
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An ELISA test would best look at antigens present in serum by using secondary antibodies to bind to antigen-antibody complex and change color, showing if an antigen is present. DNA microarray would just show genes activated. Precipitation and agglutination reactions are not as sensitive as ELISA.
An ELISA test would best look at antigens present in serum by using secondary antibodies to bind to antigen-antibody complex and change color, showing if an antigen is present. DNA microarray would just show genes activated. Precipitation and agglutination reactions are not as sensitive as ELISA.
Which type of white blood cell releases histamine and heparin?
Which type of white blood cell releases histamine and heparin?
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Neutrophils are responsible for destroying bacteria, eosinophils respond to parasitic worms and allergens, lymphocytes destroy cancerous or infected cells, and monocytes phagocytize pathogens and debris.
Neutrophils are responsible for destroying bacteria, eosinophils respond to parasitic worms and allergens, lymphocytes destroy cancerous or infected cells, and monocytes phagocytize pathogens and debris.
Name the protein most directly involved leukocyte rolling during diapedesis.
Name the protein most directly involved leukocyte rolling during diapedesis.
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Selectins are most involved in the process of leukocyte rolling—or diapedesis—while ICAMs and integrins are involved in leukocyte firm and CD31 is involved in leukocyte transmigration.
Selectins are most involved in the process of leukocyte rolling—or diapedesis—while ICAMs and integrins are involved in leukocyte firm and CD31 is involved in leukocyte transmigration.
Endothelial cell retraction involves which of the following?
Endothelial cell retraction involves which of the following?
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During endothelial cell retraction, gaps form between the cells as their cytoskeletons are rearranged to decrease the cell's area. This is a result of histamine, which causes increased vascular permeability; endothelial cell retraction allows fluids to pass between the cells, contributing to the inflammatory effects of histamine.
During endothelial cell retraction, gaps form between the cells as their cytoskeletons are rearranged to decrease the cell's area. This is a result of histamine, which causes increased vascular permeability; endothelial cell retraction allows fluids to pass between the cells, contributing to the inflammatory effects of histamine.
What type of microbiota infect individuals who are already immunocompromised?
What type of microbiota infect individuals who are already immunocompromised?
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Opportunistic microbiota can form biofilms and affect patients who are immunocompromised, suchs as someone with AIDS or a chronic illness.
Resident microbiota are always present in the body and frequently have mutualistic relationships with their human hosts. Transient microbiota are present at some times, but absent at others. Pathogens affect healthy individuals, as well as those who may be immunocompromised.
Opportunistic microbiota can form biofilms and affect patients who are immunocompromised, suchs as someone with AIDS or a chronic illness.
Resident microbiota are always present in the body and frequently have mutualistic relationships with their human hosts. Transient microbiota are present at some times, but absent at others. Pathogens affect healthy individuals, as well as those who may be immunocompromised.
Which of the following does not release histamine?
Which of the following does not release histamine?
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Mast cells are perhaps the best-known producers of histamine. Basophils also release histamine and contribute to the inflammatory response, while platelets are also capable of releasing histamine. Neutrophils are best-known for their phagocytic properties, and do not produce histamine.
Mast cells are perhaps the best-known producers of histamine. Basophils also release histamine and contribute to the inflammatory response, while platelets are also capable of releasing histamine. Neutrophils are best-known for their phagocytic properties, and do not produce histamine.
Which of the following causes edema during inflammation?
Which of the following causes edema during inflammation?
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There are two primary types of pressure: hydrostatic pressure is the result of fluid volume pressing on a physical boundary, while oncotic pressure is the pulling force of protein concentrations causing watter diffuse across a membrane. During an inflammation response, fluid is allowed to leak out of arterioles and capillaries resulting in increased hydrostatic pressure in the interstitium. Edema is the accumulation of fluid in the interstitium.
All the other answers cause fluid to return to the vessel, rather than exit it.
There are two primary types of pressure: hydrostatic pressure is the result of fluid volume pressing on a physical boundary, while oncotic pressure is the pulling force of protein concentrations causing watter diffuse across a membrane. During an inflammation response, fluid is allowed to leak out of arterioles and capillaries resulting in increased hydrostatic pressure in the interstitium. Edema is the accumulation of fluid in the interstitium.
All the other answers cause fluid to return to the vessel, rather than exit it.
Which of the following do NSAIDS effect?
Which of the following do NSAIDS effect?
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NSAIDs inhibit COX-1, inhibiting the formation of prostanglandins.
NSAIDs inhibit COX-1, inhibiting the formation of prostanglandins.
What is sarcoidosis?
What is sarcoidosis?
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Sarcoidosis is a disease of unknown cause that leads to inflammation. The immune cells that cause inflammation do not dissipate and instead, create clusters called granulomas. Not all cases of sarcoidosis require treatment.
Sarcoidosis is a disease of unknown cause that leads to inflammation. The immune cells that cause inflammation do not dissipate and instead, create clusters called granulomas. Not all cases of sarcoidosis require treatment.
What is the difference between MRSA and other Staphylococcus infections?
What is the difference between MRSA and other Staphylococcus infections?
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MRSA stands for methicillin-resistant Staphylococcus aureus. It is often seen in hospitals or long term care facilities. It can be treated using other antibiotics or is sometimes drained and left to heal without other intervention.
MRSA stands for methicillin-resistant Staphylococcus aureus. It is often seen in hospitals or long term care facilities. It can be treated using other antibiotics or is sometimes drained and left to heal without other intervention.
What insect carries the parasite responsible for African sleeping sickness?
What insect carries the parasite responsible for African sleeping sickness?
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Africa sleeping sickness, also known as African trypanosomosis, is caused by a parasite. The parasite, Trypanosoma brucei rhodesiense, is carried by the Tsetse fly. The fly bite is the mechanism for the parasite entering the body. There are two variations of sleeping sickness, East African and West African.
Africa sleeping sickness, also known as African trypanosomosis, is caused by a parasite. The parasite, Trypanosoma brucei rhodesiense, is carried by the Tsetse fly. The fly bite is the mechanism for the parasite entering the body. There are two variations of sleeping sickness, East African and West African.
What are some of the symptoms of African sleeping sickness?
What are some of the symptoms of African sleeping sickness?
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African Sleeping Sickness, caused by a parasite spread by the Tsetse Fly, has several symptoms that appear about 1-3 weeks after being bitten by the fly. The most common symptoms are fevers, extreme fatigue, muscle aches, irritability, swollen lymph nodes, and severe headaches.
African Sleeping Sickness, caused by a parasite spread by the Tsetse Fly, has several symptoms that appear about 1-3 weeks after being bitten by the fly. The most common symptoms are fevers, extreme fatigue, muscle aches, irritability, swollen lymph nodes, and severe headaches.
Which of the following does not release histamine?
Which of the following does not release histamine?
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Mast cells are perhaps the best-known producers of histamine. Basophils also release histamine and contribute to the inflammatory response, while platelets are also capable of releasing histamine. Neutrophils are best-known for their phagocytic properties, and do not produce histamine.
Mast cells are perhaps the best-known producers of histamine. Basophils also release histamine and contribute to the inflammatory response, while platelets are also capable of releasing histamine. Neutrophils are best-known for their phagocytic properties, and do not produce histamine.
Name the protein most directly involved leukocyte rolling during diapedesis.
Name the protein most directly involved leukocyte rolling during diapedesis.
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Selectins are most involved in the process of leukocyte rolling—or diapedesis—while ICAMs and integrins are involved in leukocyte firm and CD31 is involved in leukocyte transmigration.
Selectins are most involved in the process of leukocyte rolling—or diapedesis—while ICAMs and integrins are involved in leukocyte firm and CD31 is involved in leukocyte transmigration.
Endothelial cell retraction involves which of the following?
Endothelial cell retraction involves which of the following?
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During endothelial cell retraction, gaps form between the cells as their cytoskeletons are rearranged to decrease the cell's area. This is a result of histamine, which causes increased vascular permeability; endothelial cell retraction allows fluids to pass between the cells, contributing to the inflammatory effects of histamine.
During endothelial cell retraction, gaps form between the cells as their cytoskeletons are rearranged to decrease the cell's area. This is a result of histamine, which causes increased vascular permeability; endothelial cell retraction allows fluids to pass between the cells, contributing to the inflammatory effects of histamine.
Which of the following tests best detects antigens in serum?
Which of the following tests best detects antigens in serum?
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An ELISA test would best look at antigens present in serum by using secondary antibodies to bind to antigen-antibody complex and change color, showing if an antigen is present. DNA microarray would just show genes activated. Precipitation and agglutination reactions are not as sensitive as ELISA.
An ELISA test would best look at antigens present in serum by using secondary antibodies to bind to antigen-antibody complex and change color, showing if an antigen is present. DNA microarray would just show genes activated. Precipitation and agglutination reactions are not as sensitive as ELISA.
Which type of white blood cell releases histamine and heparin?
Which type of white blood cell releases histamine and heparin?
Tap to see back →
Neutrophils are responsible for destroying bacteria, eosinophils respond to parasitic worms and allergens, lymphocytes destroy cancerous or infected cells, and monocytes phagocytize pathogens and debris.
Neutrophils are responsible for destroying bacteria, eosinophils respond to parasitic worms and allergens, lymphocytes destroy cancerous or infected cells, and monocytes phagocytize pathogens and debris.
Which of the following cells is stimulated to release histamine?
Which of the following cells is stimulated to release histamine?
Tap to see back →
Mast cell functions in allergic responses by release histamine and other chemicals that promote inflammation. Macrophages are part of the innate immune system and function to engulf and remove debris. Neutrophils are also part of the innate immune system and have macrophagic properties, especially when fighting bacterial infection. Natural killer cells bind to and destroy pathogens without the use of antigens.
Mast cell functions in allergic responses by release histamine and other chemicals that promote inflammation. Macrophages are part of the innate immune system and function to engulf and remove debris. Neutrophils are also part of the innate immune system and have macrophagic properties, especially when fighting bacterial infection. Natural killer cells bind to and destroy pathogens without the use of antigens.