Textbook Question
Name the two major components of the extracellular matrix and, if applicable, subclasses of each component.
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4. Tissues & Histology
Introduction to Muscle Tissue
Multiple Choice
Muscle cells serve as a reservoir for which of the following?
A
Chloride ions
B
Potassium ions
C
Calcium ions
D
Sodium ions
Verified step by step guidance1
Understand the role of muscle cells in the body, particularly their function in contraction and relaxation.
Recall that muscle contraction is primarily controlled by the release and uptake of calcium ions (Ca2+) within the muscle cells.
Recognize that calcium ions are stored in the sarcoplasmic reticulum, a specialized type of endoplasmic reticulum in muscle cells.
During muscle contraction, calcium ions are released into the cytoplasm, triggering the interaction between actin and myosin filaments.
After contraction, calcium ions are pumped back into the sarcoplasmic reticulum, ready to be released again for the next contraction cycle.
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