Term
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Definition
| lies between the abdomen and perineum |
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Term
| organs of the pelvic cavity |
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Definition
| rectum, urinary bladder, reproductive viscera |
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Term
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Definition
| the floor of the pelvic cavity, consists primarily of the left and right levator ani muscles |
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Term
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Definition
| the most inferior region of the trunk, contains external genitalia and anal canal |
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Term
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Definition
| joins the pubic parts of the left and right coxal bones |
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Term
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Definition
| joins the iliac part of the coxal bone on each side with the sacrum, a synovial joint |
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Term
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Definition
| joins the sacrum and coccyx, a cartilaginous joint |
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Term
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Definition
| binds the ischial tuberosity to the sacrum and coccyx |
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Term
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Definition
| binds the ischial spine to the sacrum and coccyx |
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Term
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Definition
| the superior opening of the pelvis |
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Term
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Definition
| border of the pelvic inlet |
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Term
| pelvic brim anterior border |
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Definition
| pubic crests of coxal bones |
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Term
| pelvic brim lateral borders |
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Definition
| ileopectineal lines of coxal bones |
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Term
| pelvic brim posterior borders |
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Definition
| scral promontory = anterosuperior edge of the body of the 1st sacral vertebra |
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Term
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Definition
| inferior opening of the pelvis |
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Term
| pelvic outlet anterior border |
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Definition
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Term
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Definition
| the midline arch of the bony pelvis bordered above by the pubic symphysis and on the sides by inferior pubic rami |
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Term
| pelvic outlet lateral borders |
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Definition
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Term
| pelvic outlet posterior borders |
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Definition
| sacrotuberous ligaments and the tip of the coccyx |
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Term
| differences female vs male pelvic cavity |
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Definition
| 1) shallower and more cylindrical, 2)subpubic angle is more rounded and 20-30 degrees greater, 3)pelvic outlet has greater cicumference |
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Term
| bony pelvis structures palpated during routing obstetrical examination |
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Definition
| ischial spines, ischial tuberosities, sacral promontory, lower border of pubic symphysis |
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Term
| obstetric conjugate diameter |
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Definition
| can not be measured directly, the distance from the midpoint of the sacral promontory to the closest point on the posterior surface of the pubic symphysis |
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Term
| diagonal conjugate diameter |
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Definition
| distance from the midpoint of the sacral promontory to the inferior margin of the pubic symphysis, subtract 1.5 cm to get an estimate of obstetric conjugate diameter |
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Term
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Definition
| distance between ischial spines |
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Term
| plane of least pelvic dimensions |
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Definition
| anterior border = inferior margin of pubic symphysis, a transverse diameter of the interspinous diameter |
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Term
| cardinal movements of labor |
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Definition
| 1)engagement, 2)flexion, 3)descent, 4) internal rotation, 5)extension 6)external rotation |
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Term
| left and right coccygeus muscles |
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Definition
| form the most posterior part of the pelvic floor, orginate from pelvic side of ischial spine and sacrospinous ligament, insert onto the coccyx |
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Term
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Definition
| arises from sacral plexus, receives fibers from S2, S3, S4, passes through greater and lesser sciatic foramen |
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Term
| pudendal nerve innervation |
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Definition
| levator ani, all muscles of perineum, cutaneous to external genitalia |
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Term
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Definition
| one branch of common iliac artery, aka hypogastric artery, anterior and posterior divisions which supply pelvic and perineal viscera |
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