What forms the linea semilunaris?
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 is the arcuate line?
The arcuate line is an area of demarcation visible from the peritoneal surface of the abdominal wall, residing one-third the distance between the umbilicus and the pubis. The arcuate line can be a sharp demarcation, or it can be a gradual transition zone where the fibers of the posterior sheath gradually disappear.[1]
What muscle can be seen immediately medial to the semilunar line?
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.
How is linea alba formed?
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.
Where is arcuate line located?
The arcuate line or semicircular line of Douglas is located at roughly one-third of the distance from the pubic crest to the umbilicus.
What is fold of Douglas?
Douglas fold – a fold of peritoneum, containing the rectouterine muscle, forming the lateral boundary of the rectouterine (Douglas) pouch. Synonym(s): sacrouterine fold. Douglas line – a crescentic line that marks the lower limit of the posterior layer of the sheath of the rectus abdominis muscle.
What is the difference between Celiotomy and laparotomy?
Laparotomy, also known as celiotomy, is performed by making a large incision in the abdomen to gain access to the peritoneal cavity. A standard laparotomy usually involves a sagittal, midline incision along the linea alba.