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depressor    
n. 抑压者,抑压物,抑制剂

抑压者,抑压物,抑制剂

depressor
n 1: any skeletal muscle that draws a body part down [synonym:
{depressor}, {depressor muscle}]
2: any nerve whose activity tends to reduce the activity or tone
of the body part it serves [synonym: {depressor}, {depressor
nerve}]
3: a device used by physician to press a part down or aside


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  • Why Giraffes Have Long Necks: Evolution in Action
    For many years, the dominant explanation for the giraffe’s long neck came from the early 19th-century French naturalist Jean-Baptiste Lamarck According to Lamarck, giraffes stretched their necks higher and higher to reach tall trees during droughts when ground vegetation was scarce
  • Why do giraffe have such a long neck?
    The giraffe's long neck serves multiple purposes: it allows them to reach high foliage for food, engage in dominance displays (necking), and keep an eye out for predators To support this long neck, giraffe have evolved specialized adaptations
  • Why Do Giraffes Have Long Necks? - Encyclopedia Britannica
    The long neck of a giraffe (genus Giraffa) is a classic example of adaptation, which is the process by which a species becomes better suited to its environment Giraffes use their long necks to browse foliage that is as high as six meters (20 feet) off the ground, primarily from thorny acacia trees
  • If a giraffes neck only has seven vertebrae, how is it so flexible?
    Giraffes tower above all other mammals in the world Loping along the African savannas on skinny, stiltlike legs, adult male giraffes can top out at 19 feet (6 meters) [source: National Geographic] But only around half of that height comes from their stems -- the rest is all neck
  • Giraffe Anatomy | Neck, Hide and Horns of a Giraffe - Animal Corner
    How Long is a Giraffe’s Neck? A giraffe’s neck can measure over 1 5 metres (5 feet) in length, however, it contains only seven vertebrae the same number as in most other mammals, including humans
  • The Long-Neck Truth About Giraffe Bones - WorldAtlas
    A giraffe’s neck can weigh up to 600 pounds and grow 6 feet long This is an incredible feat considering that giraffes and humans have the same number of cervical vertebrae: seven
  • Fossil evidence and stages of elongation of the Giraffa camelopardalis neck
    We incorporate extinct giraffids, and the okapi and giraffe cervical vertebral specimens in a comprehensive analysis of the anatomy and elongation of the neck
  • Why Do Giraffes Have Long Necks? Lamarckism vs Darwinism Explained
    Giraffe necks consist of seven elongated cervical vertebrae and specialized muscles and ligaments While giraffes can arch and flex their necks for feeding or “necking” fights, their bones don’t literally grow longer through stretching
  • Why Do Giraffes Have Such a Long Neck? - Biology Insights
    The giraffe, an emblem of the African savanna, stands out with its towering stature and extraordinarily elongated neck This remarkable anatomical feature, stretching up to 8 feet and weighing as much as 600 pounds, has long captivated scientists and the public
  • Giraffe Neck: Why Do Giraffes Have Long Necks? - Science ABC
    Giraffes—the tallest living terrestrial animal—stand over 5 meters tall with nearly half of their height being occupied by their neck! The neck of a giraffe is certainly splendid to watch Interestingly enough, their necks are comprised of only seven vertebrae, just like the human neck!





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