Module 1 - Lesson 5 Flashcards
what are the 4 bones that make up the structure of the pelvis?
- sacrum
- coccyx
- right and left innominate bones-3parts - illium
pubis
ischium
what is the sacrum?
fusion of 5 modified vertebrae
- part of spine
what is the coccyx?
4 modified fused vertebrae - tailbone
part of spine
what are the R/L innominate bones?
sides of the pelvic bones - 3 parts - ilium
pubis
ischium
what is the ilium?
largest and superior bone in the innominate bones - joins to sacrum - makes SI joint
what is the pubis?
the inferior and anterior part of hip bones - comes out infront creating a hole down the middle - like a bowl - like if you put out hands and arms in front of you like a hug it would be your hands.
what is the ischium?
inferior and posterior part of the hip bones
- sit bones
do the pubic bones join? explain.
yes at the midline, joined by the pubic symphysis- flexible
the pelvic bones have a _________shape
concave curvature
what is the function of the pelvic bones?
- weight bearing
- direct the fetal head during child birth
- protect the pelvic organs
what is the pelvic inlet?
- upper opening of the true pelvis
- pelvic brim
- from pubic symphysis to the sacral promontory
what is the pelvic outlet?
- lower opening of the true pelvis
- From lower border of symphasis pubis to coccyx
what is the false pelvis? where? what is in it?
- superior to the pelvic inlet
- partially lined with bone - ilium
- organs - ileum (small intestine) , sigmoid colon
- muscles - psoas, iliacus, iliopsoas
what is the true pelvis? where? what is in it?
- inferior to pelvic brim (pelvic inlet)
- entirely lined with bone
Organs -
Bladder
Uterus
Ovaries
Fallopian tubes
Vagina
Rectum
Parts of colon
Muscles
OIM (Obturator internus muscle- lateral wall)
Piriformis (posterior wall)
Coccygeus (posterior floor)
Levator ani (3) (middle and anterior floor)
what is the rectus abdominis?
- ab muscles
- line anterior wall of abdominopelvic cavity
- ribs to pubic bone
