NUR 641E Midterm Exam Study Guide
|Questions with 100% Correct Answers |
Verified | Latest Update 2024 Graded A+
action potential ✔✔-sodium moves into cell (depolarization)
-threshold potential must be reached
-potassium moves out of cell (repolarization)
-returns to resting potential by pumping sodium out of cell and potassium back into cell
threshold potential ✔✔The minimum membrane potential that must be reached in order for an
action potential to be generated.
absolute refractory period ✔✔The minimum length of time after an action potential during which
another action potential cannot begin.
relative refractory period ✔✔A period after firing when a neuron is returning to its normal
polarized state and will fire again only if the incoming message is much stronger than usual
caseous necrosis ✔✔-degeneration and death of tissue with a cheese-like
appearance -associated with TB
tuberculosis ✔✔-An infectious disease that may affect almost all tissues of the body, especially the
lungs -airborne
-caseous necrosis
-1/4 of world population infected -> leading cause of death d/t infectious disease
-high risk countries include Mexico, Phillippines, Gautamala, China, Haiti, India
-congregate settings such as homeless shelters are high risk, including for employees
-increased in the mid 90s d/t AIDS but have decreased since 2000s
, isoniazid (INH) ✔✔-antiTB
- take daily for 6-12 months and most likely with other meds too
-worked if 3 neg. sputum cultures, no temp.
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