6 Questions
Which process releases Ca2+ from the SR in smooth muscle?
Calcium-Induced Calcium-Release (CICR)
How is relaxation of smooth muscle achieved after contraction?
By removing Ca2+ from the sarcoplasm
What is the role of Ca2+ pumps & exchangers in smooth muscle?
To remove Ca2+ from the sarcoplasm
Which types of channels allow calcium to enter the smooth muscle cell?
All of the above
Which processes increase cytoplasmic calcium and promote contraction?
All of the above
Which molecule stimulates calcium release from the sarcoplasmic reticulum?
Inositol 1,4,5-trisphosphate (IP3)
Test your knowledge on calcium regulation in smooth muscle cells with this quiz. Learn about the different channels and processes involved in calcium entry and release, and how they promote contraction.
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