DSA 5 Flashcards
functions of the bony pelvis include:
transmits weight of the body from the vertebral column to the lower limbs;
contains, supports, and protects pelvic viscera;
provides attachments for muscles of the trunk and lower limbs
the pelvis transmits body weight from the ___ to the ___
vertebral column;
lower limbs
the pelvis contains, supports, and protects ___
pelvic viscera
the pelvis provides ___ for ___ of the ___
attachments; muscles;
trunk and lower limbs
the pelvis is comprised of
2 hip bones
the 2 hip bones form
anterior and lateral walls
anteriorly, hip bones articulate with ___ at the ___
each other;
pubic symphysis
posteriorly, hip bones articulate with ___ at the ___
the sacrum;
sacroiliac joint
the sacrum and coccyx articulate at the
sacrococcygeal joint
articulate at the pubic symphysis
anterior hip bones with each other
articulate at the sacroiliac joint
posterior hip bones with the sacrum
articulate at the sacrococcygeal joint
sacrum and coccyx
divides the pelvis into two parts
pelvic brim
the pelvic brim divides the pelvis into two parts:
false (greater) pelvis and true (lesser) pelvis
the pelvic brim is formed by the
sacral promontory, iliopectineal lines, and symphysis pubis
the ___ pelvis bounds the lower part of the abdominal cavity
false (greater)
the ___ pelvis contains the pelvic cavity
true (lesser)
the ___ is above the pelvic brim, while the ___ is below the pelvic brim
false (greater);
true (lesser)
in anatomical position:
the front of the ___ and the ___ lie in the same vertical plane
symphysis pubis;
ASIS
the surface of the symphysis pubis faces
upward and backward
the anterior surface of the sacrum is directed
forward and downward
the false pelvis functions to
support the abdominal contents;
after the 3rd month of pregnancy, helps support the baby and uterus;
during early stages of labor, helps guide the fetus into the true pelvis
the anatomy of the ___ in females is important for ___ because it forms the ___ through which the child passes during birth
true pelvis; obstetrics; bony canal (birth canal)
the ___ contains an inlet, outlet, and cavity
true pelvis
boundaries are the sacral promontory posteriorly, the iliopectineal lines laterally, and the pubic symphysis anteriorly.
pelvic inlet (pelvic brim)
boundaries are the coccyx posteriorly, the ischial tuberosities laterally, and the pubic arch anteriorly
pelvic outlet
contains 3 wide notches
pelvic outlet
lies anteriorly, between the ischiopubic rami.
pubic arch
the pubic arch lies
anteriorly between the ischiopubic rami
branch in latin
ramus
the birth canal passes
directly below the pubic arch
the ___ lie ___ and are divided into the greater and lesser sciatic foramen by the ___ (from the ___) and the ___ (from the ___)
sciatic notches; laterally;
sacrospinous ligaments; ischial spine;
sacrotuberous ligaments; ischial tuberosity
short, curved canal, with a shallow anterior wall and a much deeper posterior wall, lies between the inlet and the outlet.
pelvic cavity
the pelvic cavity is a ___ with a ___ and a ___ that lies ___
short, curved canal;
shallow anterior wall;
much deeper posterior wall;
between the inlet and outlet
From an obstetric standpoint, the ___ considered to form part of the perimeter of the pelvic outlet because ___
pelvic outlet;
the sacrotuberous ligaments are strong and relatively inflexible
the pelvic outlet is ___ shaped, with the ___ forming the boundaries in front and the ___ forming the boundaries behind
diamond;
ischiopubic rami and pubic symphysis;
sacrotuberous ligament and the coccyx
female vs male pelvis:
female:
- wider greater (false) pelvis
- wider, shorter sacrum
- father apart acetabula
- oval-shaped pelvic inlet
- 90-100 degree angle on pubic arch
male:
- narrower greater (false) pelvis
- narrower, longer sacrum
- closer together acetabulum
- heart-shaped pelvic inlet
- 60-70 degree angle on pubic arch
forms the lower limb girdle that attaches the limb to the vertebral column
os coxae (coxal bone)
the os coxae (coxal bone) forms the ___ that attaches the ___ to the ___
lower limb girdle;
limb;
vertebral column
3 skeletal elements that form the os coxae include:
ilium,
ischium,
pubis
the bones of the os coxae meet each other at the ___ via the ___
acetabulum;
Y-shaped triradiate cartilage
the os coxae articulate with the sacrum at the
sacroiliac joints
the os coxae articulate with each other anteriorly at the
symphysis
the upper flattened part of the ilium bone
ilium
can be felt through the skin along its entire length of the top of the ilium
iliac crest
basin like depression
iliac fossa
the ilium bone ends in front at the ___ and behind at the ___
ASIS;
PSIS
the ___ is a prominence below the ASIS and ___ below the PSIS
AIIS; PIIS
the ilium possess a ___ above and behind the acetabulum
large notch (greater sciatic notch)
deep depression on the outer surface of the hip bone
acetabulum
the acetabulum articulates with the ___ to form the ___ joint
head of the femur;
hip
the inferior margin of the acetabulum is ___ and marked by the ___
deficient;
acetabular notch
the ___ of the acetabulum is covered with ___
articular surface;
hyaline cartilage
the floor of the acetabulum is ___ and called the ___
nonarticular;
acetabular fossa
the pubis is divided into:
a body, superior ramus, inferior ramus
the superior ramus joins the ___ at the acetabulum, and the inferior ramus joins the ___
ilium and ischium;
ischial ramus below the obturator foramen
the ___ forms the upper border of the body of the pubis, and it ends as the ___
pubic crest;
pubic tubercle
the ___ has an ___ behind which is the ___ (attachment site for the hamstring muscles)
ischium bone;
ischial ramus;
ischial tuberosity
below the greater sciatic notch, the ___ projects posteriorly
ischial spine
the sacrum consists of ___ fused together to form a ___
5 rudimentary vertebrae;
single wedge-shaped bone
the upper border of the sacrum is called the ___ and articulates with the ___
base;
5th lumbar vertebra
the narrow inferior border articulates with the
coccyx
laterally, the sacrum articulates with the ___ to form the ___
two iliac bones;
sacroiliac joints
the anterior and upper margins of the first sacral vertebra bulge forward to form the
sacral promontory
___ is the posterior margin of the pelvic inlet that is an ___ used when measuring ___
sacral promontory;
important obstetric landmark;
size of the pelvis
the sacral vertebral foramina together form the
sacral canal
the laminae (plates) of the 5th sacral vertebra, and sometimes that of the 4th, fail to meet in the midline, forming the
sacral hiatus (opening)
contains the anterior and posterior roots of the lumbar, sacral, and coccygeal spinal nerves; the filum terminale; and fibrofatty material
sacral canal
nonfunctional continuation of the end of the spinal cord
the filum terminale
the sacral canal contains the ___ roots of the ___, the ___, and ___, and the ___ down as far as the lower border of the second sacral vertebra
anterior and posterior;
lumbar, sacral, and coccygeal spinal nerves;
filum terminale;
fibrofatty material;
the lower part of the subarachnoid space
the coccyx consists of ___ fused together to form a ___ which articulates at ___ with the ___
4 vertebrae;
small triangular bone;
its base;
lower end of the sacrum
the coccygeal vertebrae consist of bodies only, but the first vertebra possess ___ and ___
rudimentary transverse processes;
cornua (horns)
horns
cornua
inflammation of the pubic symphysis and surrounding muscle insertions.
First described in patients who underwent suprapubic surgery, it remains a well-known complication of invasive procedures about the pelvis.
It may also occur as an inflammatory process in athletes
osteitis pubis
osteitis pubis is an ___ of the ___ that is first described in patients who ___ and remains a well-known complication of ___ that may also occur as an ___ in athletes
inflammation;
pubic symphysis and surrounding muscle insertions;
suprapubic surgery; invasive procedures about the pelvis;
inflammatory process
an inflammation of one or both of your sacroiliac joints.
Commonly associated with arthritis, traumatic injury, or pregnancy, it often is mistaken as lower back pain
sacroiliitis
sacroiliitis is an ___ of ___ commonly associated with ___ and is often mistaken as ___
inflammation;
one or both sacroiliac joints;
arthritis, traumatic injury, or pregnancy;
lower back pain
uncommon and usually occur during high speed car accidents
pelvis fractures
pelvis fractures are ___ and usually occur during ___
uncommon;
high speed car accidents
