Which of the following is a function of bursa?

The function of bursa primarily involves reducing friction. Bursa are small, fluid-filled sacs located between bones and soft tissues, such as muscles, tendons, and skin. They serve as cushions, allowing these structures to move smoothly over one another during activities such as walking, running, or lifting. This reduction in friction is crucial for preventing damage to bone and soft tissues during movement, thereby facilitating ease of motion.

While providing nutrients, storing fat, and transmitting electrical signals are functions associated with other structures in the body, they do not describe the primary role of bursa. Nutrient provision typically involves blood vessels and organs that perform metabolic functions, fat storage relates to adipose tissue, and the transmission of electrical signals is characteristic of nerve cells and neural tissue, not bursa.