rectus abdominis muscle

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Related to rectus abdominis muscle: Pyramidalis muscle

rec·tus ab·dom·i·nis mus·cle

(rek'tŭs ab-dom'i-nis mŭs'ĕl)
Muscle of ventral abdominal wall, flanking the linea alba, characterized by tendinous intersections separating its length into multiple bellies; origin, crest and symphysis of the pubis; insertion, xiphoid process and fifth to seventh costal cartilages; action, flexes lumbar vertebral column, draws thorax downward toward pubis; nerve supply, thoracoabdominal nerves.
Synonym(s): musculus rectus abdominis [TA] , rectus muscle of abdomen.

rectus abdominis muscle

Abdominal wall muscle. Origin: crest and symphysis of pubis. Insertion: xiphoid process, costal cartilages 5-7. Nerve: spinal T7-T12. Action: tenses abdomen, flexes vertebral column.
See also: muscle


[L.] straight.

rectus abdominis muscle
see Table 13.2.
ocular rectus muscle
see Table 13.1F.
rectus sheath
the sleeve of fascia which surrounds the rectus abdominis muscle and which is derived from the aponeurotic tendons of the other abdominal muscles.
References in periodicals archive ?
The patient is then asked to raise her head and maintain this position for approximately 10-20 secs to allow the examiner palpate the rectus abdominis muscles.
As indicated by the oxidative metabolism (SO + FOG), the mean frequency of fibers from the rectus abdominis muscle was not different between 2x/w and 5x/w rats, and this frequency was lower in the control rats compared to both of the trained groups.
Furthermore, these authors found an activation maximum with vibration for the rectus abdominis muscle of 46.
On the basis of this information, we have decided to study the rectus abdominis muscle of the tufted capuchin monkey, with the following goals: the frequency and area of fiber types; its possible compartmentalization; and identify if this muscle is better adapted to phasic or postural activities.
In cases of larger- sized defects, it would be appropriate to use a free muscle flap regardless of the defect site; the latissimus dorsi muscle, the rectus abdominis muscle, and the serratus anterior muscle being the ones primarily used.
Selective activation of different portions of the rectus abdominis muscle is theoretically possible because, in morphological terms, the rectus abdominis is a polygastric (literally, "with several bellies") muscle with three to four portions on the left and right sides of the body.
Looking at the group mean activation levels and the statistical analysis the reader (and author) is led to conclude that the instability of the Swiss ball causes increases in muscle activation of the triceps and rectus abdominis muscle.
We present a rare case of extrahepatic occurrence of hydatid cyst in the pelvis with secondary musculoskeletal extension to the rectus abdominis muscle.
The anterior abdominal wall showed a swelling in its infraumbilical portion along the lateral border of the right rectus abdominis muscle.
Very rarely scar endometriosis can be seen in the rectus abdominis muscle (3) or the sheath only (4).