Which of the following actions is most likely to terminate an ongoing contraction of a skeletal muscle fibre?

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

Release of neurotransmitter at the neuromuscular junction

Removal of Ca²⁺ from sarcoplasm

Influx of Ca²⁺ into the axon terminal at the neuromuscular junction

Increase in Ca²⁺ concentration in sarcoplasm

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

When Ca⁺⁺ ions removed from sarcoplasm, active sites on actin filaments are masked. This causes the return of ‘Z’ lines back to their original position (muscle relaxation).

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th