Can someone please help me Based on the following diagram you can conclude that:
ID: 92327 • Letter: C
Question
Can someone please help me
Based on the following diagram you can conclude that: a. decreasing sodium outside the cell increases the size of the action potential. b. decreasing potassium outside the cell decreases the size of the action potential. c. decreasing potassium outside the cell increases the size of the action potential. d. sodium has large effects on both the size of the action potential and the resting membrane potential. e. decreasing sodium outside the cell decreases the size of the action potential. Hodgkin and Katz proposed that sodium was the predominant ion associated with the firing of an action potential because a. the membrane potential approaches the Na^+ Nernst potential during the rising phase. b. the membrane potential approaches the Na^+ Nernst potential during the falling phase. c. sodium ions can move more quickly than other ionic species. d. sodium ions are the only ions that can flow into the nerve cell body. e. the sodium gradient explains the rising phase, falling phase, and overshoot of the action potential.Explanation / Answer
Answer:
24. (e) decreasing sodium outside the cell decreases the size of the action potential.
Explanation:
Extracellular concentration of sodium has more effect on the action potential than intracellular due to its low intracellular concentration. An increase in the extracellular concentration of sodium results in a higher peak and faster action potential.
25. (a) the membrane potential approaches the Na+ Nernst potential during the rising phase.
Explanation:
Hodgkin and Katz proposed a model for describing the mechanism of generation and propagation of action potential in neurons. They used giant squid axon to study the effect of sodium ions on the magnitude of action potential and found that sodium formed the primary ions associated with the firing of an action potential.