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Multiple Choice
Which of the following is considered a superficial muscle of the core?
A
Transversus abdominis
B
Internal oblique
C
Rectus abdominis
D
Quadratus lumborum
Verified step by step guidance
1
Understand the concept of 'superficial' muscles: Superficial muscles are located closer to the surface of the body, as opposed to 'deep' muscles, which are located deeper within the body. Superficial muscles are often visible and play a role in movement and posture.
Review the anatomy of the core muscles: The core muscles include the rectus abdominis, transversus abdominis, internal oblique, external oblique, and quadratus lumborum. Each has a specific location and function within the abdominal and lower back region.
Identify the location of the rectus abdominis: The rectus abdominis is a long, flat muscle that runs vertically along the front of the abdomen. It is located just beneath the skin and is responsible for the 'six-pack' appearance, making it a superficial muscle.
Compare the rectus abdominis to the other options: The transversus abdominis is the deepest abdominal muscle, the internal oblique is located beneath the external oblique, and the quadratus lumborum is a deep muscle in the lower back. None of these are considered superficial.
Conclude that the rectus abdominis is the correct answer: Based on its anatomical position and visibility, the rectus abdominis is classified as a superficial muscle of the core.