Asked by HAILEE FENNELL on Sep 24, 2024
Verified
What is the role of an inhibitory interneuron in a stretch reflex?
A) It is used to inhibit the antagonistic muscles from contracting at the same time as the effectors of the reflex.
B) It is used to ensure that the effectors do not contract excessively.
C) It sends inhibitory commands to the opposite limb, so it will not respond.
D) It ensures that the reflex does not damage the effectors.
E) Inhibitory interneurons are not involved in stretch reflexes.
Inhibitory Interneuron
A type of neuron that reduces or inhibits the activity of other neurons, playing a key role in neural circuits.
Stretch Reflex
A muscle contraction in response to stretching within the muscle, part of the body's reflexive action to maintain posture and balance.
Antagonistic Muscles
Muscle pairs that work opposite each other; when one muscle contracts, the other relaxes, allowing movement in opposite directions.
- Understand the role of inhibitory interneurons in reflex arcs.
Verified Answer
PA
Pratik Agarwal1 day ago
Final Answer :
A
Explanation :
Inhibitory interneurons are used to inhibit the contraction of the antagonistic muscles (muscles that oppose the action of the effectors of the reflex) so that they do not contract at the same time as the effectors, which could cause unwanted or harmful movements. This helps to ensure that the movement produced by the reflex is smooth and coordinated.
Learning Objectives
- Understand the role of inhibitory interneurons in reflex arcs.