buttocks

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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 ?
It's hard because your butt cheeks are always facing part of the crowd," Contactmusic frontwoman Nicole Scherzinger, as saying.
Start off sitting and in a smooth and controlled manner clench the butt cheeks together and lift your body upwards.
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THE statuette for these awards should really be of a pair of silver-plated butt cheeks because this prize is all about bums on seats - and the movies that you voted for.
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He added: "Baring my butt cheeks was not in the script.
Karlie came in a black dress with plunging neckline too, showing off her well-toned back and a glimpse of her butt cheeks.
WHEN the announcer introduced "the man who brings the two halves together" on The Other Half Celebrity Special (BBC1, last night) I expected to meet the surgeon who's just connected Dale Winton's forehead to his butt cheeks.
Not only did Hogan swing on a giant wrecking ball, he also bared his butt cheeks by wearing a thong in the wrecking ball scene.