Rectus Abdominus: The rectus abdominus is a prominent muscle of the abdominal wall that aids in flexing the lumbar spine, providing stability to the core, and assisting in various movements such as bending and breathing. It plays a crucial role in maintaining posture and protecting internal organs by acting as a shield. These parallel bands run vertically on each side of the anterior wall of the human abdomen, often referred to as "abs".
The name "rectus abdominus" comes from Latin, where "rectus" means "straight," and "abdominus" refers to the abdomen, indicating its straight orientation along the abdominal wall.
If the rectus abdominus were absent or damaged, the body would struggle with basic movements such as bending forward and performing activities requiring core strength. It would also compromise the body's ability to maintain proper posture and protect vital organs within the abdominal cavity.