Which factor increases the latency period prior to muscle contraction?
Understand the Problem
The question is asking which specific factor affects the latency period before a muscle starts contracting, indicating how different loads and conditions influence this physiological response.
Answer
Calcium release delay from the SR increases the latency period.
An increase in calcium release delay from the sarcoplasmic reticulum (SR) increases the latency period prior to muscle contraction.
Answer for screen readers
An increase in calcium release delay from the sarcoplasmic reticulum (SR) increases the latency period prior to muscle contraction.
More Information
The latent period is the time between muscle stimulation and contraction, primarily influenced by calcium ion interactions within muscle cells.
Tips
A common mistake is to confuse the latent period with other phases like contraction or relaxation. Understanding the role of calcium ions and their timing in muscle physiology helps avoid this confusion.
Sources
- Muscle Isotonic Contraction - an overview | ScienceDirect Topics - sciencedirect.com
- Physiology, Muscle Contraction - StatPearls - NCBI Bookshelf - ncbi.nlm.nih.gov
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