Costal cartilages of ribs 5-7 xiphoid process of sternum
Artery
Inferior epigastric artery
Nerve
Segmentally by thoraco-abdominal nerves (T7 to T11) and subcostal (T12)
Actions
Flexion of the lumbar spine
Antagonist
Erector spinae
Identifiers
Latin
musculus rectus abdominis
MeSH
D017568
TA98
A04.5.01.001 A04.5.00.001
TA2
2357
FMA
9628
Anatomical terms of muscle
[edit on Wikidata]
The rectus abdominis muscle, (Latin: straight abdominal) also known as the "abdominal muscle" or simply the "abs", is a pair of segmented skeletal muscle on the ventral aspect of a person's abdomen (or "midriff"). The paired muscle is separated at the midline by a band of dense connective tissue called the linea alba, and the connective tissue defining each lateral margin of the rectus abdominus is the linea semilunaris. The muscle extends from the pubic symphysis, pubic crest and pubic tubercle inferiorly, to the xiphoid process and costal cartilages of the 5th–7th ribs superiorly.[1][2]
The rectus abdominis muscle is contained in the rectus sheath, which consists of the aponeuroses of the lateral abdominal muscles. Each rectus abdominus is traversed by bands of connective tissue called the tendinous intersections, which interrupt it into distinct muscle bellies. In people with low body fat, these muscle bellies can be viewed externally in sets from as few as two to as many as ten, although six is the most common.
^Gray's Anatomy for students, 2nd edition, Page:176
The rectusabdominismuscle is contained in the rectus sheath, which consists of the aponeuroses of the lateral abdominal muscles. Each rectus abdominus...
recti, or rectusabdominis diastasis, is defined as a gap of about 2.7 cm or greater between the two sides of the rectusabdominismuscle. The distance...
transverse abdominal muscle (TVA), also known as the transverse abdominis, transversalis muscle and transversus abdominismuscle, is a muscle layer of the anterior...
and external oblique muscles. It contains the rectusabdominis and pyramidalis muscles, as well as vessels and nerves. The rectus sheath extends between...
The rectusabdominismuscles are long and flat. The muscle is crossed by three fibrous bands called the tendinous intersections. The rectusabdominis is...
posterior layer of the rectus sheath inferior to which only the anterior layer of the rectus sheath is present and the rectusabdominismuscle is therefore in...
bilateral rectus sheaths that join at the anterior midline of the body. These enclose the rectusabdominismuscles (a pair of long, linear muscles, commonly...
The rectusabdominismuscle is crossed by three fibrous bands called the tendinous intersections or tendinous inscriptions. One is usually situated at...
pyramidalis muscle is a small triangular muscle, anterior to the rectusabdominismuscle, and contained in the rectus sheath. The pyramidalis muscle is part...
abdominal muscles are used isometrically to stabilize the body during the motion, leg raises are also often used to strengthen the rectusabdominismuscle and...
A rectus sheath hematoma is an accumulation of blood in the sheath of the rectusabdominismuscle. It causes abdominal pain with or without a mass. The...
sternum. The sternalis muscle may be a variation of the pectoralis major or of the rectusabdominis. The sternalis is a muscle that runs along the anterior...
the transverse abdominis, respond more to increases in chemical or volume-related drive than the two external muscles, the rectusabdominis and external...
classification of muscles in the human abdomen, such as: Rectusabdominismuscle Transverse abdominal muscle This article includes a list of related items that...
Rectusmuscle (Latin: mūsculus rēctus, "straight muscle") may refer to: In the trunk: Rectusabdominismuscle In the eye: Inferior rectusmuscle Lateral...
either side of the rectusabdominismuscle. The linea semilunaris corresponds with the lateral border of the rectusabdominismuscle. It extends from the...
passing in front of the linea semicircularis, ascends between the rectusabdominismuscle and the posterior lamella of its sheath. It finally divides into...
vehicles Abs usually refers to: Rectusabdominismuscle ("abdominal muscle" or "abs") of humans and some mammals Abdominal muscles (colloquial) ABS or Abs may...
external oblique muscle (also external oblique muscle or exterior oblique) is the largest and outermost of the three flat abdominal muscles of the lateral...
(/ɪˈrɛktər ˈspaɪni/ irr-EK-tər SPY-nee) or spinal erectors is a set of muscles that straighten and rotate the back. The spinal erectors work together...
located just superficial to the rectusabdominismuscle. It has for its borders the external oblique, pectoralis muscles, and the latissimus dorsi. The...
reconstruction. Technique The Transverse RectusAbdominis Myocutaneous free-flap, created from the transverse abdominal muscle, is a breast reconstruction flap...
contraction of the abdominal wall muscles (rectusabdominis, transverse abdominis, external oblique muscle and internal oblique muscle). These press the abdominal...
wall, and upper rectusabdominismuscle. It enters the rectus sheath to descend upon the inner surface of the rectusabdominismuscle. It ends by anastomosing...
with one surface in contact with the peritoneum behind the right rectusabdominismuscle and the diaphragm, and the other in contact with the left lobe...
reinforced by the tendons of the rectusabdominismuscle, the abdominal external oblique muscle, the gracilis muscle, and by muscles of the hip. The superior...
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