Asked by Olivier Bufole on Jul 07, 2024
Verified
When a neuron is polarized, ________.
A) both positive and negative ions are concentrated inside the neural membrane
B) positive ions are concentrated outside the neural membrane while negative ions are concentrated inside the membrane
C) negative ions are concentrated outside the neural membrane while positive ions are concentrated inside the membrane
D) both positive and negative ions are concentrated outside the neural membrane
Polarized
Polarized is a term used to describe a situation, opinion, or group that is divided into two extreme positions, with no apparent middle ground.
Neural Membrane
The lipid bilayer that encloses the cytoplasm of neurons, essential for conducting electrical impulses.
Ions
Atoms or molecules that have gained or lost one or more of their electrons, resulting in a net electric charge.
- Acknowledge the significance and procedures of action potentials and resting potentials in the activity of neurons.
Verified Answer
SC
Sinahi ChavezJul 09, 2024
Final Answer :
B
Explanation :
When a neuron is polarized, positive ions such as sodium (Na+) and potassium (K+) are concentrated outside the neural membrane while negative ions such as chloride (Cl-) and protein anions are concentrated inside the membrane. This creates an electrical charge difference across the membrane, with the inside of the neuron being negatively charged relative to the outside.
Learning Objectives
- Acknowledge the significance and procedures of action potentials and resting potentials in the activity of neurons.