What is the name of the aponeurosis that fuses the abdominal wall muscles together at the ventral midline?

• A. Tendinous intersections
• B. Linea alba
• C. Linea semilunaris
• D. Aponeurosis of external oblique

Answer: (B)

The ventral midline fusion of the abdominal wall aponeuroses forms a single, strong seam called the linea alba. This structure results from the aponeuroses of the external oblique, internal oblique, and transversus abdominis joining together along the midline, extending from the xiphoid process down to the pubic symphysis. The linea alba provides a central attachment and helps stabilize the abdominal wall under pressure. Other features mentioned serve different roles: tendinous intersections are the transverse bands across the rectus abdominis, the linea semilunaris marks the lateral border of the rectus, and the aponeurosis of the external oblique is just one of the contributing layers rather than the midline fusion itself.