Explain anaphylactic shock
What will be an ideal response?
A life-threatening systemic reaction known as anaphylactic shock can occur if an allergen becomes blood borne or if very large amounts of chemicals are released from the localized site into circulation. Severe hypotension that can lead to circulatory shock results from histamine-induced widespread vasodilation and a massive shift of plasma fluid into the interstitial spaces as a result of an increase in capillary permeability. Concurrently, pronounced bronchiolar constriction occurs via SRS-A action and can lead to respiratory failure. Unless countermeasures, such as injecting a vasoconstrictor–bronchodilator drug, are undertaken immediately, anaphylactic shock is often fatal.
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Research shows that neurofibrillary tangles are the primary cause of Alzheimer's disease. Neurofibrillary tangles are associated with microtubules. Based on your knowledge of microtubules, explain what may happen to microtubules to cause Alzheimer's disease.
What will be an ideal response?
When using the higher power objective lenses, you would use this part of the microscope to focus the specimen
A) fine adjustment knob B) iris diaphragm lever C) course adjustment knob
Describe the mechanisms involved by which the parasympathetic and sympathetic nervous systems affect cardiac output. Include ACh, NE, regulated K+ channels, If channels and T-type Ca2+ channels, vagus nerve, cardiac nerves, contractility, stroke volume, and heart rate in your answer
What will be an ideal response?
Filtrate in the proximal convoluted tubule normally contains
a) nutrients. b) hydrogen ions. c) water. d) urea. e) All of the answers are correct.