abdominal muscles


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abdominal muscles

the muscles between the thorax and the pelvis supporting the abdominal wall. The lateral parts of the wall are formed by the transverse abdominis, the internal oblique, and the external oblique. Anteriorly, on each side, a segmented muscle, the rectus abdominis, spans the distance between the inferior thoracic wall and the pelvis. Other muscles supporting the posterior aspect of the wall are the quadratus lumborum, the psoas major, and the iliacus.

Abdominal Muscles

The large muscles of the anterior abdominal wall—external oblique, internal oblique, rectus abdominalis—which help breathing, support spinal muscles whilst lifting, and help maintain abdominal organs and GI tract in their normal position.

abdominal muscles

Clinical anatomy The large muscles of the anterior abdominal wall–external oblique, internal oblique, rectus abdominalis, which help in breathing, support spinal muscles while lifting, and help maintain abdominal organs and GI tract in their normal position
Enlarge picture
MUSCLES OF THE TRUNK

abdominal muscles

The abdominal muscles are made up of the cremaster, external abdominal oblique, iliacus, psoas major, pyramidalis, quadratus lumborum, rectus abdominis, and transversus abdominis muscles.
illustration
See also: muscle
Figure 1: Ascending nerve pathways and proprioceptive reflex arcs, represented in diagrammatic sections of the brain and spinal cord. Shown on the right: those serving the sensations listed. Shown on the left: reflex pathways for skeletal muscle control. (A) From a muscle spindle, to a synapse with an alpha motor neuron, and a branch to the brain. (B) From a tendon organ, inhibitory branch (broken line) to an alpha motor neuron, and a branch to the brain.

abdominal muscles

layers of muscle in the abdominal wall. The rectus abdominis muscles, strap-like, lie vertically each side of the midline; their action can be important in breaking the force of a blow. A 'three-ply' layer of flat muscles, each with the fibres running in different directions (external and internal oblique, and transverse) extend from the lower ribs to the hip bone, and from the sheath of the rectus muscles to the lumbar spine, thickest in the flanks. Actions include: forward flexion and rotation of the trunk; assisting expiration during deep breathing or against airway obstruction, by contracting as the diaphragm relaxes, or acting together with the contracting diaphragm to raise abdominal pressure in straining (urination, defaecation, childbirth) and in vomiting. Figure 1.

abdominal

pertaining to, affecting or originating in the abdomen. See also abdominal paracentesis, abdominal sounds.

abdominal binding
a wide bandage applied to the abdomen to raise intra-abdominal pressure. Its primary purposes are (1) to limit the displacement of the diaphragm during thoracic compression of cardiopulmonary resuscitation, thereby raising intrathoracic pressures achieved and improving forward blood flow, and (2) to maintain blood volume in the central circulation during hemorrhagic shock.
abdominal breathing
an abnormal form of respiratory movement in which the thorax is fixed and the inspiratory and expiratory movement of the lungs are carried out by the diaphragm and the abdominal muscles so that there are exaggerated movements of the abdominal wall.
abdominal cavity
the body cavity between the diaphragm and the pelvis; contains the abdominal organs.
abdominal enlargement
may result from fluid effusions (transudate, exudate or blood), enlargement of viscera (neoplasia, dilatation, engorgement or physiological phenomena, e.g. pregnancy), intra-abdominal masses or fat. Weakness of the abdominal wall usually results in a pendulous rather than enlarged abdomen.
abdominal lavage
see abdominal lavage.
abdominal muscle ischemia
an unexplained ischemic necrosis of the internal oblique muscle of ewes in late pregnancy which are carrying twins or triplets. Results in ventral hernia but often with little apparent effect on the ease of lambing.
abdominal muscles
the paired muscles of the flank and belly that surround and support the abdominal viscera.
abdominal pad
see abdominal pad.
abdominal pain
may arise from an abdominal organ, the peritoneum or be referred as from spinal nerves.
abdominal regions
arbitrary, descriptive subdivisions of the abdomen made up of three groups of three (like a noughts-and-crosses grid), three along the middle—xiphoid, umbilical and pubic, and three lateral pairs—hypochondriac, lateral abdominal and inguinal.
abdominal silhouette
the shape of the abdomen viewed from behind.
abdominal trier
see trier.
abdominal tunic
see tunica flava abdominis.
abdominal viscera
the organs contained within the abdominal cavity; they include the stomach, intestines, liver, spleen, pancreas, and parts of the urinary and reproductive tracts.
abdominal wall
consists of the parietal peritoneum, the deep and superficial layers of fascia, the transverse abdominal, internal and external abdominal oblique muscles, the subcutaneous tissue and the skin. It contains the umbilicus, the cicatrix marking the entry point of the umbilical cord, and is traversed by the inguinal canal, and at its caudal extremity carries the prepubic tendon, the ventral attachment of the wall to the pubic bones.
abdominal wall rigidity
reflex response to pain of peritonitis, accompanied by pain on palpation or percussion.
References in periodicals archive ?
It utilizes clinically proven, medical-grade, electrical muscle stimulation (EMS) technology to work all the abdominal muscles simultaneously.
It is important to note that an individual can have very little excess body fat around the midsection and still have weak or underdeveloped abdominal muscles.
Lift the chest and hips off the floor and pull the abdominal muscles upwards towards your spine.
Fitness and Self, fitness experts and general consumers are now recognizing that this belt is truly an effective solution for toning, strengthening and firming abdominal muscles.
Oscar De La Hoya shows off his six-pack of abdominal muscles at the weigh-in Friday.
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In clinical trials(1), the technology included in the SLENDERTONE GYMBODY abdominal belt is shown to improve abdominal muscle tone, to strengthen abdominal muscles significantly, and to develop a firmer abdomen.
When a reporter showed De La Hoya the aforementioned photo last week at his Big Bear camp, De La Hoya lift his shirt and displayed a six-pack of abdominal muscles.
The researchers also tested various methods of treating a side stitch including bending over while tightening the abdominal muscles, tightening a belt around the waist, or breathing through pursed lips with extra big breaths--all of which alleviated the stitch within seconds.
The initial step in improving your balance is to activate your lower abdominal muscles.
Works on: quadriceps, gluteal muscles, hamstrings, abdominal muscles and shoulders.