Which of the following structures is located at the neck of the bladder and surrounds the urethra in a male client?

The function of connective tissue is best described as binding tissue together and supporting structures. Connective tissue plays a crucial role in connecting different tissues and organs, providing support and structure throughout the body.

A. Secretes a substance that reduces surface tension of alveoli:
The reduction of surface tension of alveoli is due to the surfactant, which is secreted by the type II alveolar cells in the lungs, not the pleural membranes. Surfactant helps keep alveoli open and prevents their collapse.

B. Secretes fluid to reduce friction between layers:
The pleural membranes secrete a small amount of pleural fluid into the pleural cavity. This fluid acts as a lubricant, reducing friction between the layers of the pleura as the lungs expand and contract during breathing.

C. Secretes fluid involved in protection from infections:
While the pleural fluid helps with lubrication, it does not have a primary role in protecting against infections. The body has other mechanisms and fluids, like mucus, to handle infection protection.

D. Secretes a substance to keep epithelial cells wet:
The primary role of the pleural fluid is lubrication rather than keeping epithelial cells wet. Keeping epithelial cells moist is more relevant to mucus production in various parts of the body, including the respiratory and gastrointestinal tracts.