New York Nail Technician License Practice Test

What is the lubrication that prevents friction at the joints?

1. Synovial

2. Serous fluid

3. Cartilaginous fluid

4. Connective tissue

The correct answer is: Synovial

The correct choice highlights the role of synovial fluid, which is a thick, clear fluid found in joint cavities. Synovial fluid acts as a lubricant, reducing friction between the articular cartilage of moving bones. This fluid is crucial for healthy joint function, allowing for smoother movement and helping to maintain the integrity of the joints. It also provides nutrients to the cartilage and absorbs shock during physical activity. While other fluids and tissues might play a role in joint function—serous fluid is primarily associated with body cavities and organs, cartilaginous fluid is not a recognized term in anatomy, and connective tissue refers to a broader category of tissue that provides support and structure—it's synovial fluid that specifically functions to lubricate joints and facilitate movement.