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Questions and Answers
Which process releases Ca2+ from the SR in smooth muscle?
Which process releases Ca2+ from the SR in smooth muscle?
- Exchangers
- Calcium-Induced Calcium-Release (CICR) (correct)
- Ca2+ channels
- Ca2+ ATPase pumps
How is relaxation of smooth muscle achieved after contraction?
How is relaxation of smooth muscle achieved after contraction?
- By contracting the SR
- By opening specific Ca2+ channels
- By removing Ca2+ from the sarcoplasm (correct)
- By activating Ca2+ ATPase pumps
What is the role of Ca2+ pumps & exchangers in smooth muscle?
What is the role of Ca2+ pumps & exchangers in smooth muscle?
- To remove Ca2+ from the sarcoplasm (correct)
- To release Ca2+ from the SR
- To contract the smooth muscle
- To open specific Ca2+ channels
Which types of channels allow calcium to enter the smooth muscle cell?
Which types of channels allow calcium to enter the smooth muscle cell?
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Which processes increase cytoplasmic calcium and promote contraction?
Which processes increase cytoplasmic calcium and promote contraction?
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Which molecule stimulates calcium release from the sarcoplasmic reticulum?
Which molecule stimulates calcium release from the sarcoplasmic reticulum?
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