Anatomy anus scrotum

It is found in both males and females, and arises from the fusion of the urogenital folds. It is most commonly due to a failure of the processus vaginalis to close. The dartos muscle is a sheet of smooth muscle, situated immediately underneath the skin. Repair of perineal trauma. There are a number of causes of scrotal swelling — here are the most common: Other activities that involve riding saddle-style include motorcycle and horseback riding.
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Perineum - Wikipedia

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Scrotum Anatomy and Function

The skull has two openings fenestrae on either side and the jaw is rigidly attached to the skull. This page was last edited on 27 November , at They look different enough most of the time: The thorax has three pairs of segmented legs , one pair each for the three segments that compose the thorax and one or two pairs of wings.
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There is an inner ear but no external or middle ear. Retrieved November 25, The Biology of Carnivorous Marsupials. Invertebrates constitute a vast array of living organisms ranging from the simplest unicellular eukaryotes such as Paramecium to such complex multicellular animals as the octopus , lobster and dragonfly. During this time the pelt fills in with a short, dense, under-growth of fine, or downy, light colored fur.
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Our tour now leaves the lower reaches and travels up, onto your chest. Chronic perineal injury most often results from a job-or sport-related practice—such as bike, motorcycle, or horseback riding—or a long-term condition such as chronic constipation. The perineum is important because it contains blood vessels and nerves that supply the urinary tract and genitals with blood and nerve signals. Pelvic floor muscles support the bladder and bowel. Blood flowing through arteries appears red, while blood flowing through veins appears blue. The function of the scrotum is to protect the testes and to keep them at a temperature several degrees below the normal body temperature.
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