Multiple Choice
In the process of excitation-contraction coupling in skeletal muscle, which step is indicated by 'a' if it refers to the release of calcium ions from the sarcoplasmic reticulum?
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4. Tissues & Histology
Introduction to Muscle Tissue
Multiple Choice
Which property of muscle tissue allows it to stretch without being damaged?
A
Contractility
B
Elasticity
C
Extensibility
D
Excitability
Verified step by step guidance1
Understand the key properties of muscle tissue: Contractility, Elasticity, Extensibility, and Excitability. Each property describes a unique characteristic of muscle tissue.
Define 'Extensibility': Extensibility is the ability of muscle tissue to stretch or lengthen without being damaged. This property is crucial for muscles to accommodate movements and changes in length during physical activity.
Contrast Extensibility with Elasticity: Elasticity refers to the ability of muscle tissue to return to its original shape after being stretched or contracted, whereas Extensibility focuses solely on the ability to stretch without damage.
Differentiate Extensibility from Contractility and Excitability: Contractility is the ability of muscle tissue to contract and generate force, while Excitability refers to the ability to respond to stimuli. Neither of these properties directly relates to the ability to stretch without damage.
Conclude that Extensibility is the correct property that allows muscle tissue to stretch without being damaged, as it specifically addresses the ability to lengthen safely.
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