beginning
In this article, I will explain “joint lips” in detail. The joint lip is an important structure that improves joint stability and smooth movement, and is made of cartilage. It is located in the shoulder and hip joints and is lubricated by synovial fluid in the joint cavity. The functionality and shape of the joint lip varies depending on the type of animal and the type of joint, but as a whole, it greatly contributes to maintaining joint stability and functionality. Also, joint lip damage can cause instability and pain, and treatment may require surgery or rehabilitation. Please use this article to deepen your understanding of the body.
Click here to watch a video about joint lips (joint lips)
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What is a joint lip
The joint lip is a joint part made of cartilage, which is useful for smooth bone contact and improved joint stability. Also, by expanding the surface area of the joint due to the joint lip, joint movement becomes smooth and joint wear is prevented. Furthermore, it retains joint fluid, which has a lubricating effect, and relieves shock and pressure. Thus, joint lips play an important role in improving joint stability and function.
How to read joint lips
Joint lips are read as “kansetsu shin.”
Characteristics of articular lips
The characteristics of joint lips are that they are made of soft cartilage and are located along the joint surface. Because it is made of cartilage, the joint lip is flexible and can support multi-directional movement of the joint. Joint lips play an important role in maintaining the smooth movement and stability of the joint.
Location and position of joint lips
Articular labia are mainly present in shoulder and hip joints. In the shoulder joint, it is located where the joint socket of the shoulder blade connects to the head of the humerus bone, and in the hip joint, it is located where the molar of the acetabular bone connects to the head of the femur. If you look at the human body model diagram, you can see that the joint lip is located along the hollow of the bone.
How to remember joint lips
The name joint lip comes from its shape. It is a part involved in “joints,” and it is named because it looks like a “lip” lip. It's also good to keep in mind that they exist in shoulder and hip joints.
English and Latin for articular labia
The English expression for joint lips is called “labrum (labrum)” or “articular labrum (articular labrum).” It is called “labrum articulare (labrum articulare)” in Latin.
Comparative anatomy of articular labia
The joint lip in each animal has the following characteristics. Fish have articulated lips to prey on plankton, and efficient predation is possible. Amphibian lip joints are mainly located in shoulder joints and hip joints, and by expanding the range of motion of the joints, they are useful for adaptation in terrestrial and aquatic activities. Reptiles and birds have a labial joint in the shoulder joint. Birds have developed shoulder joints and lips, which support movement ability and flight. Mammals have lip joints in large joints such as shoulder joints and hip joints, which enhances joint stability.
Tissue structure of the articular lip
The joint lip is made of fibrocartilaginous tissue and adheres to the surrounding articular connective tissue. The joint lip grows around the joint socket (part of the bone that makes up the joint) and has a unique shape according to the shape of the joint socket. For example, the joint lip of the shoulder joint has a shape close to a circle, while the joint lip of the hip joint is horseshoe shaped. The articular lip is covered by an articular synovial membrane that extends into the joint cavity, and the space between the bone and the articular lip is filled with thin synovial fluid.
Trivia about joint lips
Joint lip damage can cause joint instability and pain. It is especially common in people who exercise excessively, such as athletes. Treatment is often carried out with surgery or rehabilitation.
Joint lip quiz and correct answers
Q: What role do lip joints play?
A: It plays a role in smoothing joint movement and maintaining joint stability. It also plays a role in preventing joint wear, holding joint fluid, and helping to reduce shock and pressure during joint movements.
Q: Where is the joint labial joint particularly visible?
A: It is found in shoulder and hip joints.
summary
This time, I explained the location and location of “joint lips”, how to remember them, and the English/Latin notation.
How was it?
I would be happy if reading this article deepened my understanding of anatomy.
Learning is a long, never-ending journey, but I sincerely wish you all the best. Let's continue to study together and work hard for the national exam!
Please look forward to the next blog.
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