buttocks

(redirected from Gluteal muscles)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

buttocks

 [but´oks]
the two fleshy prominences formed by the gluteal muscles on the lower part of the back. Called also breech, clunes, and nates.

but·tocks

(bŭt'oks), [TA] This word is grammatically plural.
The prominence formed by the gluteal muscles of either side.
Synonym(s): nates [TA], clunes ☆ , breech

buttocks

/but·tocks/ (but´oks) the two fleshy prominences formed by the gluteal muscles on the lower part of the back.

buttocks

the fleshy hillocks at the lower posterior part of the torso comprising fat and the gluteal muscles. Also called nates.

buttocks

A part of the back of the hip, which, in humans, forms one of the rounded protuberances on which a person sits; the rump.

Composition
Gluteus maximus and gluteus medius muscle covered by a variable layer of fat.

but·tocks

(bŭt'ŏks)
The two gluteal prominences.
Synonym(s): nates [TA] , breech, clunes.
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.

buttocks

these rounded projections are formed mainly by the three gluteal muscles. They arise from the surface of the ilium of the hip bone and cross the back of the hip joint to be inserted into the femur. The gluteus maximus, the largest, is crucial in the maintenance of the upright posture, as an extensor at the hips, and also in running, climbing and walking up steps. It also assists in keeping the leg straight at the knee, via a fibrous band attached to the tibia. The two smaller muscles (g. medius, g.minimus) mainly take part in abduction and rotation at the hip. Figure 1.

Patient discussion about buttocks

Q. I get shooting pains in my buttocks and both upper legs

A. Sounds like radicular pain (pain originating from injury to the roots of the nerves in the spinal column). Is it aggravated by coughing, straining, standing or sitting? Is it relieved by lying down.

You may read more here: http://www.nlm.nih.gov/medlineplus/backpain.html and http://www.nlm.nih.gov/medlineplus/backpain.html

More discussions about buttocks
References in periodicals archive ?
The effect of surface electric stimulation of the gluteal muscles on the interface pressure in seated people with spinal cord injury.
In addition, the MRI results showed a fatty degeneration in the left hip region, indicating long-lasting chronic damage only present in the medial and minimal gluteal muscle.
Activation of the gluteal muscles was greater for the squat machine in comparison with the wall slide (Blanpied, 1999).
This fires the gluteal muscles and warms up the hips.
Numerous muscles attach to the pelvis--trunk muscles and muscles that originate on the pelvis and act on the legs and the gluteal muscles.
The posterior procedure goes through the gluteal muscles and that usually means a pretty painful recovery.
The OSI-Pro-FX, or HANA, table allows AOA surgeons to simply work through the natural interval between the muscles, leaving the most important muscles for hip function - the gluteal muscles that attach to the pelvis and femur - undisturbed, providing patients with the least invasive (and muscle sparing) procedure available and faster recovery time.
To assess the role of size in the reproductive success of "silverback" gorillas, the researchers selected three physical factors for measurement: overall body length; the size of the adult male's head crest (also known as a sagittal crest which is absent in females); and the size of an individual's gluteal muscles on the animal's posterior.
Lift one foot slightly off the floor and use the abdominal and gluteal muscles to help keep your balance by squeezing your tummy and bottom.
But a scan revealed a grade two tear in one of his gluteal muscles, and he has been pulled out of Delhi's 15-man squad on medical grounds.
However, a scan yesterday revealed a grade two tear in one of his gluteal muscles and he has been pulled out of Delhi's 15-man squad on medical grounds.
In stage 1, the exercise focus was to improve posture: hyperlordotic participants learned to use their abdominal and gluteal muscles more effectively and lengthen their hip flexors.