IAC Canine Physical Practice Exam

Heat therapy plays a significant role in canine physical therapy primarily through its ability to increase blood flow and promote muscle relaxation. When heat is applied to the affected area, it causes vasodilation, which is the widening of blood vessels. This process enhances circulation, allowing more oxygen and nutrients to reach the tissues while also facilitating the removal of metabolic waste products.

As blood flow increases, it not only helps to reduce inflammation and alleviate pain but also supports the healing process by supplying essential nutrients that the tissues need for recovery. Additionally, the warmth helps to relax tense muscles, which can aid in reducing muscle spasms and improving flexibility. This combination of effects makes heat therapy a valuable tool in managing pain and stiffness associated with various conditions, thereby enhancing overall mobility and comfort in dogs undergoing physical rehabilitation.

Options that suggest numbing the area or promoting joint stiffness do not reflect the actual physiological effects of heat therapy. Numbing is typically associated with cold therapy, while promoting stiffness contradicts the objective of improving mobility and reducing discomfort.