Question

Which of the following characteristics are shared in common by all three types of muscle tissue?

Autorhythmicity
Irritability
Elasticity
Contractility
Extensibility
Ca dependant contraction
a) 1, 2, 3
b) 4, 5, 6
c) 2, 4, 6
d) 1, 3, 5

Answer 1

The common characteristics shared by all three types of muscle tissue are Excitability (Irritability), Contractility, and Ca-dependent contraction, corresponding to options 2, 4, and 6 from the question. Therefore, the correct answer is (c) 2, 4, 6.

Step-by-step explanation:

The question deals with the common characteristics shared by skeletal muscle, cardiac muscle, and smooth muscle. All three types of muscle tissue have several properties in common, which allow them to perform their functions. These include:

• Excitability: Muscle cells can respond to a stimulus by changing their electrical states, which can lead to an action potential along the length of the muscle membrane.
• Contractility: Muscles have the ability to shorten and produce a pulling force when they contract, moving the structures they are attached to.
• Elasticity: Muscle tissue can return to its original length after being stretched due to the presence of elastic fibers.
• Extensibility: Muscles can stretch or extend beyond their resting length.

Based on these shared properties, the correct answer to the student's question would be (c) 2, 4, 6, which correspond to Irritability (or Excitability), Contractility, and Ca-dependent contraction. These three properties are essential for muscle tissue function and are seen across all three types of muscle.