A ________ are designed to alleviate friction that may be caused by accessory structures, like a tendon, during movement of a synovial joint.
To find the answer to this question, we need to understand what accessory structures are and how they relate to synovial joints.
1. Define accessory structures: Accessory structures refer to the additional anatomical components associated with a joint that enhance its stability and function. These include tendons, ligaments, bursae, and other connective tissues.
2. Understand synovial joints: Synovial joints are a type of joint characterized by the presence of a synovial fluid-filled cavity between the articulating bones. These joints facilitate a wide range of movements.
Now, let's look at the question again: "A ________ are designed to alleviate friction that may be caused by accessory structures, like a tendon, during movement of a synovial joint."
Based on the given information, we can deduce that the missing word refers to a structure that reduces friction caused by accessory structures, such as tendons. To get the answer, we need to think of a structure that fulfills this purpose.
The answer is a "bursa." A bursa is a small fluid-filled sac located between a tendon and a bone or another structure. Its purpose is to provide a cushioning effect and reduce friction during joint movement. Bursae secrete synovial fluid that lubricates the adjacent structures, allowing smooth movement without excess friction.
So, in summary, a bursa is designed to alleviate friction caused by accessory structures, like a tendon, during the movement of a synovial joint.