Question

The linea alba is

A. a muscle extending from the ischial spine to the coccyx and sacrum.
B. a curved, broad muscle on the side of the chest.
C. a muscle beneath the skull.
D. a band of tough connective tissue to which abdominal wall muscles attach.

Answer 1

The linea alba is a band of tough connective tissue at the anterior midline of the body that encloses the rectus abdominis muscles, also known as 'sit-up' muscles.

Step-by-step explanation:

The linea alba is a band of tough connective tissue to which abdominal wall muscles attach. This white, fibrous band is made up of the bilateral rectus sheaths that join along the anterior midline of the body and enclose the rectus abdominis muscles. They are the "sit-up" muscles that originate at the pubic crest and symphysis and extend the length of the body's trunk. Each of these muscles is segmented by tendinous intersections, giving rise to the appearance of "six-pack abs" when hypertrophied through exercises like sit-ups.

The linea alba is a band of tough connective tissue to which abdominal wall muscles attach. It is a white, fibrous band that is made of the bilateral rectus sheaths that join at the anterior midline of the body. These enclose the rectus abdominis muscles, which are a pair of long, linear muscles that originate at the pubic crest and symphysis and extend the length of the body's trunk. Each muscle is segmented by three transverse bands of collagen fibers, resulting in the look of 'six-pack abs' on individuals who do sit-ups.