Question

multiple choice question

which muscle tissue type dilates and constricts blood vessels and airways?

smooth muscle
skeletal muscle
cardiac muscle

Explanation:

Identify the function described in the question

The question asks which muscle tissue type is responsible for dilating and constricting blood vessels and airways.

Analyze the characteristics of each muscle tissue type

Using the Smooth Muscle Characteristics, Skeletal Muscle Properties, and Cardiac Muscle Characteristics knowledge points:

• Skeletal muscle is voluntary, striated, and primarily attached to bones to facilitate body movement.
• Cardiac muscle is involuntary, striated, and found exclusively in the heart wall to pump blood.
• Smooth muscle is involuntary, non-striated, and located in the walls of hollow internal organs such as blood vessels, airways, and the digestive tract, where it regulates lumen diameter.

Match the function to the correct tissue type

Using the Smooth Muscle Characteristics knowledge point:

• The contraction and relaxation of smooth muscle in the walls of blood vessels (vasoconstriction and vasodilation) and airways (bronchoconstriction and bronchodilation) directly control their diameter.
• Therefore, smooth muscle is the tissue type responsible for these actions.

Answer:

• Smooth muscle (Correct answer)
• Skeletal muscle
• Cardiac muscle