What does linea semilunaris mean?
What does linea semilunaris mean?
The linea semilunaris is a vertical, curved structure that runs along the lateral edges of the rectus abdominis muscle in the anterior abdominal wall. It is the site of union where tendons of the lateral abdominal muscles meet the sheath surrounding the rectus abdominis muscle, also known as the rectus sheath.
What is linea semilunaris made of?
Structure. The linea semilunaris corresponds with the lateral border of the rectus abdominis muscle. It extends from the cartilage of the ninth rib to the pubic tubercle. It is formed by the aponeurosis of the internal oblique at its line of division to enclose the rectus.
What does Spigelian line mean?
The semilunar line, linea semilunaris or Spigelian line is a bilateral vertical curved line in the anterior abdominal wall where the layers of the rectus sheath fuse lateral to the rectus abdominis muscle and medial to the oblique muscles.
What is the transversus abdominis?
The transverse abdominis is located in the abdomen immediately inside of the internal oblique muscle. It is one of the innermost muscles of the abdomen and it arises from the inguinal ligament, iliac crest, the inner surfaces of the lower six ribs and from the thoracolumbar fascia.
What is the function of the linea alba?
The function of the linea alba is to maintain the abdominal muscles at a certain proximity to each other. In the case of long-lasting increased intra-abdominal pressure, the linea alba widens.
Where do you think the name Semilunaris originates?
Late Middle English from medieval Latin semilunaris(see semi-, lunar).
What structures form the linea alba?
The linea alba (Latin for white line) is a single midline fibrous line in the anterior abdominal wall formed by the median fusion of the layers of the rectus sheath medial to the bilateral rectus abdominis muscles. It attaches to the xiphoid process of the sternum and the pubic symphysis.
Is a Spigelian hernia painful?
Most people with a spigelian hernia experience abdominal pain or vague discomfort, especially when straining the abdominal muscles, such as when lifting or straining to have a bowel movement. Some symptoms to watch for include: pain in the abdomen that seems unrelated to food, illness, or other common sources.
What is Spigelian fascia?
The Spigelian fascia is located lateral to the rectus abdominis muscle along the linea semilunaris, or semilunar line. This layer is comprised of aponeuroses located between the rectus abdominis medially and the semilunar line laterally.
Is linea alba normal?
Do you notice a thin white line running along the pink tissue there? This a condition known as linea alba. It’s typically harmless and doesn’t require treatment. But it may be worth getting checked out.