Sudden decrease in serum calcium is associated with:
Correct Answer: Increased excitability of muscle and nerve
Description: C i.e. Increased excitability of muscle and nerve.A decrease in extracellular Ca2+ concentration increases the excitability of nerve and muscle cellsQ by decreasing the amount of depolarization necessary to initiate the changes in Nat K+ conductance that produces the action potential. An increase in Ca2+ concentration stabilizes the membrane by decreasing the excitability.Decreasing the external Na+ concentration decreases the size of action potentialQ but has little effect on RMP.Increasing the external K+ concentration decreases the RMPQ.
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now