Males may have hair growth over some or all of the buttocks. Females may have hair growth in the gluteal cleft (including around the anus), sometimes extending laterally onto the lower aspect of the cheeks. While human children generally have smooth buttocks, mature males and females have varying degrees of hair growth, as on other parts of their body. Some baboons and all gibbons, though otherwise fur-covered, have characteristic naked callosities on their buttocks. In humans they also have a role in propelling the body in a forward motion and aiding bowel movement. In the case of humans, females tend to have proportionally wider and thicker buttocks due to higher subcutaneous fat and proportionally wider hips. Females of certain species of baboon have red buttocks that blush to attract males. The buttocks allow primates to sit upright without needing to rest their weight on their feet as four-legged animals do. The masses of the gluteus maximus muscle are separated by an intermediate intergluteal cleft or "crack" in which the anus is situated. The gluteus maximus has two insertion points: 1⁄ 3 superior portion of the linea aspera of the femur, and the superior portion of the iliotibial tractus. The superior aspect of the buttock ends at the iliac crest, and the lower aspect is outlined by the horizontal gluteal crease. The buttocks are formed by the masses of the gluteal muscles or "glutes" (the gluteus maximus muscle and the gluteus medius muscle) superimposed by a layer of fat. The English language is replete with many popular synonyms that range from polite colloquialisms ("posterior", "backside" or "bottom") to vulgar slang ( "arse", "ass", "bum", "butt", "booty", "prat"). There are several connotations of buttocks in art, fashion, culture and humor. Many cultures have also used the buttocks as a primary target for corporal punishment, as the buttocks' layer of subcutaneous fat offers protection against injury while still allowing for the infliction of pain. In many cultures, the buttocks play a role in sexual attraction. In the seated position, the buttocks bear the weight of the upper body and take that weight off the feet. They are responsible for movements such as straightening the body into the upright (standing) posture when it is bent at the waist maintaining the body in the upright posture by keeping the hip joints extended and propelling the body forward via further leg (hip) extension when walking or running. The two gluteus maximus muscles are the largest muscles in the human body. They are composed of a layer of exterior skin and underlying subcutaneous fat superimposed on a left and right gluteus maximus and gluteus medius muscles. In humans, the buttocks are located between the lower back and the perineum. Send us feedback about these examples.The buttocks (singular: buttock) are two rounded portions of the exterior anatomy of most mammals, located on the posterior of the pelvic region. These examples are programmatically compiled from various online sources to illustrate current usage of the word 'deliver.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Chris Solari, Detroit Free Press, 14 Apr. 2023 While Thorne is battling Noah Kim and Katin Houser at quarterback for who will deliver the balls, Hawkins was quick to say the competition is just as intense in his position group to catch them. 2023 Russia may discuss swap for WSJ reporter Russia may be willing to discuss a prisoner swap involving Wall Street Journal reporter Evan Gershkovich after a court delivers its verdict on espionage charges, a top Russian diplomat said Thursday. 2023 During Biden’s visit to Warsaw in February, thousands gathered at the foot of the Royal Castle to hear the president deliver a speech on the eve of the one-year anniversary of Russia’s invasion of Ukraine. 2023 His new boss tried to find other carriers to cover for Groff and even delivered mail himself when no one was available. 2023 Gas grills require little fuss, heat quickly and are easy to control, while charcoal and Kamado grills require extra work to start and maintain the coals but deliver great flavor. 2023 Our tests of the Corolla SE hatchback and the Corolla XSE sedan proved that even the strongest engine doesn't deliver adequate acceleration. Chelsey Sanchez, Harper's BAZAAR, 15 Apr. 2023 Dua Lipa is back to delivering a fashion extravaganza via Instagram photo dumps. Barbara Bellesi Zito, Better Homes & Gardens, 21 Apr. Recent Examples on the Web Portability is a feature that might not immediately come to mind with table saws, but this one by Bosch does indeed deliver.
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