Asked by alysa butera on May 09, 2024
Verified
Depolarization of the nerve plasma membrane occurs when there is a rapid influx (inflow) of ________.
A) K+
B) Cl−
C) Ca2+
D) Na+
E) proteins
Depolarization
A change in a cell's membrane potential, making it more positive, and is an essential process in the initiation of action potentials in neurons.
Rapid Influx
A swift movement or flow of substances (such as ions) into a cell or area.
- Expound on the operation and properties of action potentials, specifying their stages (depolarization, repolarization, hyperpolarization) and the concept of the all-or-none principle.
- Examine the roles sodium (Na+), potassium (K+), and other ions play in the development of action potentials and in maintaining the resting membrane potential.
Verified Answer
DB
David BaisdenMay 11, 2024
Final Answer :
D
Explanation :
Depolarization of the nerve plasma membrane is primarily caused by a rapid influx of sodium ions (Na+), which increases the positive charge inside the cell and changes the membrane potential.
Learning Objectives
- Expound on the operation and properties of action potentials, specifying their stages (depolarization, repolarization, hyperpolarization) and the concept of the all-or-none principle.
- Examine the roles sodium (Na+), potassium (K+), and other ions play in the development of action potentials and in maintaining the resting membrane potential.
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