What type of cartilage connects the true ribs to the sternum?

The connection between the true ribs and the sternum is made of hyaline cartilage. This type of cartilage is smooth and glassy in appearance, providing a relatively strong yet flexible support that is ideal for joints and connections in the ribcage. Hyaline cartilage allows for some movement, which is beneficial during respiration as it helps in the expansion and contraction of the thoracic cavity.

True ribs, which are the first seven pairs of ribs, articulate directly with the sternum via this hyaline cartilage. This ensures a secure attachment while allowing the necessary flexibility.

Other types of cartilage, such as elastic cartilage and fibrocartilage, serve different functions in the body. Elastic cartilage offers more flexibility and is found in structures like the ear, whereas fibrocartilage is denser and acts as a cushion in joint areas, such as intervertebral discs. Calcified cartilage is not typically found in this specific anatomical connection; rather, it is usually associated with the end of long bones during growth and development.