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Questions and Answers
What is the resting membrane potential?
What is the resting membrane potential?
- The generation of rapidly changing electrochemical impulses at the cell membrane
- The electrical potential difference across the plasma membrane of a cell when not stimulated (correct)
- The process of transmitting signals along the nerve or muscle membranes
- The movement of ions across the cell membrane during cellular activity
What creates an electro-chemical gradient across the cell membrane?
What creates an electro-chemical gradient across the cell membrane?
- Na-K ATPase pump pumping 3Na out in exchange of 2K in (correct)
- The movement of ions through ion channels
- The process of transmitting signals along the nerve or muscle membranes
- The generation of rapidly changing electrochemical impulses at the membrane
What is the chemical gradient/concentration gradient for Na and K?
What is the chemical gradient/concentration gradient for Na and K?
- Na outside: 140 mEq/L, K outside: 14 mEq/L, Na inside: 4 mEq/L, K inside: 142 mEq/L
- Na outside: 142 mEq/L, K outside: 4 mEq/L, Na inside: 14 mEq/L, K inside: 140 mEq/L (correct)
- Na outside: 14 mEq/L, K outside: 140 mEq/L, Na inside: 142 mEq/L, K inside: 4 mEq/L
- Na outside: 4 mEq/L, K outside: 142 mEq/L, Na inside: 140 mEq/L, K inside: 14 mEq/L
What is the electrical gradient for ions across the cell membrane?
What is the electrical gradient for ions across the cell membrane?
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What provides the basis for cell signaling in nerve and muscle cells?
What provides the basis for cell signaling in nerve and muscle cells?
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