Pelvis Flashcards
What is the os coxae?
The adult pelvis.
The os coxae is formed by what 3 bones?
Ilium, Ischium, and Pubis
Where does the union ilium, ischium and pubis take place?
The acetabulum.
A cup-shaped socket into which the ball-shaped head of the femur articulates.
Acetabulum.
A hole in the os coxae between the ischium and the pubis.
Obturator foramen.
A flat sheet of connective tissue that partially covers the obturator foramen.
Obturator membrane.
What bundle course through the obturator foramen?
The obturator nerve, artery, and nerve.
Located between the ischial spine and the iliac spine.
Greater sciatic notch.
What ligament converts the greater sciatic notch into the greater sciatic foramen?
Sacrospinous ligament.
What nerve courses through the greater sciatic foramen?
Sciatic nerve.
What muscle course through the greater sciatic foramen?
Piriformis muscle.
Located between the ischial spine and the ischial tuberosity.
Lesser sciatic notch.
What ligament converts the lesser sciatic notch into the lesser sciatic foramen?
Sacrotuberous ligament.
Fibrocartilage connecting the two pubic bones in the anterior midline of the os coxae.
Pubic symphysis.
The superior aperture of the os coxae. (Oval-shaped)
Pelvic inlet.
What are the boundaries of the pelvic inlet?
Ala of the anterior sacrum, arcuate line, pubis bone, and the posterior pubis symphysis.
The inferior aperture of the os coxae. (Diamond-shaped)
Pelvic outlet.
What are the boundaries of the pelvic outlet?
Pubis symphysis, sacrotuberous ligament, and coccyx.
What are the 6 bony landmarks of the ilium?
Iliac crest, Iliac fossa, Anterior Superior iliac spine (ASIS), Anterior Inferior iliac spine (AIIS), Posterior Superior iliac spine (PSIS), and the Posterior Inferior iliac spine (PIIS).
Thickened rim of the ilium.
Iliac crest.
Concave surface on the anteromedial surface of the ilium.
Iliac fossa.
Anterior prominence of the iliac crest. Serves as an attachment site for the sartorius and tensor fascia lata muscles.
Anterior superior iliac spine (ASIS).
Anterior prominence of the iliac crest. Serves as an attachment for the rectus femoris muscle.
Anterior inferior iliac spine (AIIS).
Posterior prominence of the iliac crest.
Posterior superior iliac spine (PSIS).
Forms the posterior border of the ala of the sacrum.
Posterior inferior iliac spine (PIIS).
What are the 3 bony landmarks of the ischium?
Ischial tuberosity, Ischial spine, and the Ischial ramus.
A large protuberance on the inferior aspect of the ischium for the attachment of the hamstring muscles and for supporting the body when sitting.
Ischial tuberosity.
A pointed projection that separates the greater and lesser sciatic notches.
Ischial spine.
A bony projection that joins with the inferior pubic ramus to form the ichiopubic ramus(conjoint ramus).
Ischial ramus.
What are the 3 bony landmarks of the pubis?
Pubic tubercle, Superior pubic ramus, and the inferior pubic ramus.
A rounded projection on the superior ramus of the pubis.
Pubic tubercle.
A bony projection of the pubis that forms a bridge with the acetabulum.
Superior pubic ramus.
The crest on the superior aspect of the superior pubic ramus is the _____ ___, which serves as part of the border for the pelvic inlet and as an attachment site for muscles.
Pectineal line.
A bony projection of the pubis that forms a bridge with the ischium; serves as an attachment site for lower limb muscles.
Inferior pubic ramus.
True or false? The pelvic arch of females is larger than the pelvic arch of males?
True.
Is a female pelvic inlet more circular-shaped or heart-shaped?
Circular-shaped.
True or false? The male pelvic outlet is wider than the female pelvic outlet?
False.
