NSG 5003 WEEK 1 QUIZ ADVANCED
PATHOPHYSIOLOGY SOUTH UNIVERSITY
LATEST VERSION 2024/2025 (Verified
Answers)
Quiz 1
Question
: Why is it possible for potassium to diffuse easily into and
out ofcells?
Student A swer:
n
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NSG 5003 WEEK 1 QUIZ ADVANCED PATHOPHYSIOLOGY SOUTH UNIVERSITY LATEST VERSION 2024/2025 (V, Exams of Pathophysiology
Quiz 1 Question : Why is it possible for potassium to diffuse easily into and out ofcells? Student A swer: n eater concentration in the ICF.Sodium has a P greater concentration in the ECF. o The resting plasma membrane is more permeable to potassium. An excess of anions is inside the cell. t a s s i u m h a s a g r Instructor Explanatio n: Because the resting plasma membrane is more permeable to K+ than to Na+, K+ can easily diffuse from its area of higher concentration in the ICFto its area of lower concentration in the ECF. Because Na+ and K+ are bothcations, the net result is an excess of anions inside the cell, resulting in theresting membrane potential. The remaining options do not correctly identify the process that most easily diffuses K+. - MultipleCh 27 False 565503819 oice 0 - 565503819 MultipleCh oice 27 0 - MultipleCh 56 565503818 oice Question 3 . Question : A major determinant of the resting membrane potential necessaryfor the transmission of nerve impulses i
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NSG 5003 WEEK 1 QUIZ ADVANCED
PATHOPHYSIOLOGY SOUTH UNIVERSITY
LATEST VERSION 2024/2025 (Verified
Answers)
Quiz 1 Question : Why^ is^ it possible^ for^ potassium^ to^ diffuse^ easily^ into^ and out ofcells? Student A swer: n
eater concentration in the ICF.Sodium has a P greater concentration in the ECF. o The resting plasma membrane is more permeable to potassium. An excess of anions is inside the cell. t a s s i u m h a s a g r
Intracellular K+ and extracellular Na+ Instructor Explanatio n: The ratio of K+^ in the ICF to K+^ in the ECF is the major determinant of the resting membrane potential, which is necessary for the transmission and conduction of nerve impulses, for the maintenance of normal cardiac rhythms, and for the skeletal and smooth muscle contraction. This is not trueof the other options.
- MultipleCh 87 False 565503817 oice 0 - 565503817 MultipleCh oice
0 - MultipleCh 92 565503816 oice Question 5 . Question : What^ is^ a^ consequence^ of^ plasma^ membrane damage to themitochondria? Student Answer : Enzymatic digestion halts DNA synthesis. Influx of calcium ions halts ATP production. Edema from an influx in sodium causes a reduction in ATP production. Potassium shifts out of the mitochondria, which destroys the Instructor Explanatio n: infrastructure. The most serious consequence of plasma membrane damage is, as in hypoxic injury, to the mitochondria. An influx of calcium ions from the extracellular compartment activates multiple enzyme systems, resulting incytoskeleton disruption, membrane damage, activation of inflammation, and eventually DNA degradation. Calcium ion accumulation in the mitochondria causes the Points Received: Comments: 0 of 0.
mitochon dria to swell, which is an occurren ce that is associated with irreversible cellular injury. The injured mitochondria can no longer generate ATP, but they do continue to accumulate calcium ions. The remaining options do not accurately describe the consequence of plasma membrane damage to the mitochondria. Points Received: 0 of 0.
Instructor Explanation:
The recent discovery that cardiac stem cells exist in the heart and
understandi ng of myocardial biology; it is now believed that bone marrow–
derived cardiac stem cells or progenitor cells that have the ability to mature
Points Received: Comments: 0 of 0. do not accurately describe the process that is believed to occur to address
- 565503814 MultipleChoice 59 False 0 - 565503814 MultipleChoice 59 0 - 565503813 MultipleChoice 49 0 - 565503812 MultipleChoice 3 cardiac muscle damage.
Question 9 .
(NaCl) nitric oxide (NO) Swell becau se of the influx of Instructor Explanatio n: A reduction in ATP levels causes the plasma membrane’s sodium- potassium (Na+–K+) pump and sodium-calcium exchange to fail, which leads to