Structure Of The Pelvic Walls Flashcards
True or false.
The walls of the pelvis are formed by bones and ligaments that are partly lined with muscles covered with fascia and parietal peritoneum.
True
The pelvis has?
Anterior, posterior, and lateral walls and an inferior wall or floor.
Is the shallowest wall and is formed by the bodies of the pubic bones, the pubic ramai, and the symphysis pubis.
Anterior pelvic wall
Is extensive and is formed by the sacrum and coccyx and by the piriformis muscles and their covering of parietal pelvic fascia.
Posterior pelvic wall
Is extensive and is formed by the sacrum and coccyx and by the piriformis muscles and their covering of parietal pelvic fascia.
Posterior pelvic wall
Consists of five rudimentary vertebrae fused together to form a single wedge shaped bone with a forward concavity.
The upper border or base of the bone articulates with a fifth lumbar vertebra. The narrow inferior border articulates with a coccyx.
Sacrum
Laterally the sacrum articulates with the two iliac bones to form?
Sacroiliac joints
The anterior and upper margins of the first take convertible bulge forward as the posterior margin of the pelvic inlet, ____________ which is an important obstetric landmark used when measuring the size of the pelvis.
Sacral promontory
The vertebral foramina together forms the?
Sacral canal
The laminate of the 5th sacral vertebra and sometimes those of the 4th, fail to meet in the midline forming the?
Sacral hiatus
Contains the anterior and posterior roots of the lumbar, sacral, and coccygeal spinal nerves; the filum terminale; and fibrofatty material.
Sacral canal
What is the sacrum in the female versus the male?
The sacrum is usually wider in proportion to its length in the female than in the male.
The sacrum is tilted forwards that it forms an angle with a fifth lumbar vertebra called the?
Lumbosacral angle
