Final answer:
The capacity of the heart to alter the intensity of its contraction without undergoing stretching is referred to as contractility
Step-by-step explanation:
Contractility is a fundamental property of cardiac muscle that enables the heart to adjust the force of its contractions without the need for significant changes in its size or stretching.
This capability is crucial for the heart to adapt to varying demands and efficiently pump blood throughout the body.
Contractility is influenced by factors such as neural signals, hormones, and the intrinsic properties of cardiac muscle cells, allowing the heart to modulate its pumping action based on the body's requirements and physiological conditions.