Module 3D: Lower Appendicular Skeleton Flashcards
does the pelvic girdle form a full ring when the pelvis is attached to the sacrum?
yes
what full ring of the pelvic girdle has 7 bones, what are they?
- sacrum (not apart of the pelvis though)
- 2 ilium
- 2 ischium
- 2 pubis
what does the pelvic girdle do?
it attaches the lower limbs to the body and by doing that, it transmits forces from the lower limbs to the axial skeleton to the vertebral column
does the pelvic girdle provide support and balance to the trunk and provide support and protection to our organs?
yes
what are the main bones of the right lower limb?
hip bone (os coxae), sacrum, femur, patella, tibia, fibula, tarsals, metatarsals and phalanges
what is the iliac crest?
the top portion of the ilium
what is the anterior superior iliac spine?
at the front of the iliac crest
- hip bones
what is the sacroiliac joint?
where the sacrum articulates with the right and left ilia
what is the ischial tuberosity?
a site of muscle attachment
- what we sit on
- the very bottom of our pelvis
what is the pubic symphysis?
the fibrocartilage joint that doesn’t allow for much movement in the pelvis
- holds the left and right ischium together
what is the pubic tubercle?
the attachment point for the inguinal ligament
- on ischium
what is the pubic crest?
the attachment site for muscle
- on ischium
what is the acetabulum?
made up of all three bones in the pelvis on each side
- it is the socket for the head of the femur
- hip joint
what is the obturator foramen?
the big obvious hole in the anterior aspect of the pelvis
- lots of things pass through this foramen like blood vessels and nerves
what would happen if we did not have an obturator foramen?
the vessels from inside the trunk would have problems exiting into our limbs
- pelvis would be much more heavy
what is the anterior inferior iliac spine?
inferior to the anterior superior iliac spine
where is the greater sciatic notch?
on the ilium
- the posterior aspect of the hip bone
- boundary for the greater side of foramen
- contains lots of veins and muscle
what bone is behind “back dimples”?
the posterior superior iliac spine
what is the posterior inferior iliac spine?
- a part of an important space (the greater sciatic foramen) and they are an attachment point for some other structures
what are the anterior, inferior and posterior gluteal lines?
these are attachment points for the gluteal muscle group
what attaches to the ischial spine?
a ligament that is important to form the spaces of the greater and lesser sciatic foramen
what is the lesser sciatic notch?
the boundary for the lesser sciatic foramen
what is the ramus of ischium?
important for defining spaces for your urogenital triangle