Crescent Line

The semilunar line (linea semilunaris, pna, bna; synonym Spigelian line) is a linear depression of the abdominal wall on the sides of the rectus abdominis muscle.

This line has a semilunar shape and stretches from the xiphoid process of the sternum to the pubic symphysis. The semilunar lines are located symmetrically to the right and left of the white line of the abdomen.

The semilunar lines are formed by connecting the aponeurosis of the external oblique abdominal muscle with the aponeurosis of the transverse abdominal muscle. This is the site of attachment of these aponeuroses and forms a depression on the anterior abdominal wall.

The semilunar lines have important anatomical significance. They separate the rectus abdominis muscle from the broad abdominal muscles - the external oblique and transverse abdominis. In addition, the semilunar lines help to navigate during examination and palpation of the abdominal cavity.

The semilunar line (linea semilunaris) is an anatomical structure that runs along the anterior surface of the shoulder. It is formed as a result of the connection of two bones - the humerus and the ulna.

The linea semilunaris is one of the most important anatomical structures on the shoulder. It plays an important role in arm movement and stability. The semilunar line helps keep the arm in the correct position and prevents its dislocation and displacement.

In addition, the semilunar line is of great importance for blood circulation and lymphatic drainage. It allows blood and lymph to flow freely through the arm, which promotes arm health and functionality.

The crescent line is also an important structure for athletes and people involved in physical activity. It helps prevent injuries and damage to the hand when playing sports.

In conclusion, the linea semilunaris is an important anatomical structure on the shoulder that plays a large role in maintaining the health and functionality of the arm. Its proper functioning is important for maintaining health and preventing injury and damage.