Asked by Hayden Spalding on Jun 15, 2024
Verified
The difference between a weak stimulus and an intense stimulus is
A) a weak stimulus produces a weak action potential, while a strong stimulus produces a strong action potential.
B) a weak stimulus only opens sodium gates, while a strong stimulus opens both sodium and potassium gates.
C) an intense stimulus can cause an axon to start an axon potential more often in a given time interval than a weak stimulus.
D) a weak stimulus, unlike a strong stimulus, will not require repolarization.
E) an intense stimulus causes more sodium ions to diffuse into the cell.
Repolarization
The process of restoring the negative charge inside a nerve cell after depolarization, essential for the transmission of nerve impulses.
Sodium Gates
Protein channels in cell membranes that open or close to allow sodium ions to enter or exit, playing key roles in generating electrical signals.
Weak Stimulus
A stimulus not strong enough to trigger a significant physiological response.
- Identify the construction and role of neurons, encompassing the initiation and spread of action potentials.
Verified Answer
CC
Camila CabriniJun 16, 2024
Final Answer :
C
Explanation :
The difference between a weak stimulus and an intense stimulus is that an intense stimulus can cause an axon to start an action potential more often in a given time interval than a weak stimulus. This is because a strong stimulus triggers more voltage-gated sodium channels to open, allowing more sodium ions to diffuse into the cell and creating a larger depolarization. As a result, the threshold for triggering an action potential is reached more quickly and with greater frequency, leading to a more intense response.
Learning Objectives
- Identify the construction and role of neurons, encompassing the initiation and spread of action potentials.