Human Pelvis

Human Pelvis

In human anatomy, the pelvis (plural pelves or pelvises, sometimes also called pelvic region of the trunk) is the lower part of the trunk, between the abdomen and the lower limbs (legs). The pelvis includes several structures:

  • the bony pelvis, or pelvic skeleton, the part of the skeleton connecting the sacrum region of the spine to the femurs, subdivided into:
    • the pelvic girdle (the two hip bones, which are part of the appendicular skeleton) and
    • the pelvic region of the spine (sacrum, and coccyx, which are part of the axial skeleton)
  • the pelvic cavity, typically defined as a small part of the space enclosed by the pelvic skeleton, delimited by the pelvic brim above and the pelvic floor below; alternatively, the pelvic cavity is sometimes also defined as the whole space enclosed by the pelvic skeleton, subdivided into:
    • the greater or false pelvis, above the pelvic brim
    • the lesser or true pelvis, below the pelvic brim
  • the pelvic floor or pelvic diaphragm, below the pelvic cavity
  • the perineum, below the pelvic diaphragm

In the human, the pelvic skeleton is formed in the area of the back (posterior dorsal), by the sacrum and the coccyx (the caudal portion of the axial skeleton), and laterally and anteriorly (forward and to the side), by a pair of hip bones, the lower extremity, (parts of the appendicular skeleton). In an adult human being, the pelvic skeleton is thus composed of three large bones, and the coccyx (3–5 bones); however, before puberty, each hip bone consists of three discrete (separate) bones — the ilium, ischium, pubis — that have yet to fuse at adulthood; thus, in puberty, the human pelvic skeleton can comprise more than 10 bones, depending upon the composition of the person’s coccyx.

Read more about Human PelvisBrief Description, Pelvic Cavity, Development, Pregnancy and Childbirth, Sexual Dimorphism, Evolution

Other articles related to "human pelvis, pelvis":

Human Pelvis - Evolution
... The shape of the pelvis, most notably the orientation of the iliac crests and shape and depth of the acetabula, reflects the style of locomotion and body mass of an animal ... In heavy mammals, especially in quadrupeds, the pelvis tend to be more vertically oriented because this allows the pelvis to support greater weight without dislocating the sacroiliac joints or ... relatively wide shape (front to back) of the pelvis provides greater leverage for the gluteus medius and minimus ...

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