Bachelor of Health Science (BHS) Degree Practice Exam 2025 – All-in-One Study Guide for Exam Success!

Cardiac muscle is a specialized type of muscle found exclusively in the heart. Its primary function is to facilitate the contractions of the heart, enabling it to pump blood throughout the body effectively. This muscle is unique in its structure and function, possessing properties that allow it to contract rhythmically and continuously without fatigue. The contraction of cardiac muscle is mediated by the heart's electrical conduction system, which coordinates the heart's beating in a synchronized manner to ensure adequate blood circulation.

The other options do not accurately describe the role of cardiac muscle. Growth of muscle pertains more to skeletal muscle and its ability to undergo hypertrophy and atrophy based on usage. Voluntary movement is characteristic of skeletal muscle, which is under conscious control, whereas cardiac muscle operates involuntarily and autonomously. Flexibility of limbs relates to the mobility and range of motion associated with skeletal muscles and joints, rather than the function of cardiac muscle. Thus, the ability of cardiac muscle to contract is fundamental to its role in maintaining life by ensuring proper blood flow and oxygen delivery throughout the body.