Lesson 10 Part 2 Flashcards
How many fused distal segments of the vertebral spine is the sacrum
5
Where is the sacrum located in the pelvis
Posterior midline border
Describe the tilt of the sacrum
Posterior tilt
Is the sacrum concave or convex
Anteriorly concave
What does the sacrum support
Pelvic viscera
Describe the weight transfer of the sacrum
Sacrum->hip bones -> legs
What marks the posterior portion of the pelvic inlet/brim
Sacral promontory
What is for sacral nerve passage in the sacrum
The anterior and posterior bilateral columns of the sacral foramina
Fused spinous processes form the
Median crest
What does the sacrum articulate with
5th lumbar vertebra superiorly, coccyx inferiorly and the os coxae laterally
What makes the sacroiliac joint aka iliosacral joint or SI joint
Articular surface on lateral sacrum and the iliac bones
The sacral promontory is ____ cm anterior to the bodys center of gravity
1 cm
Coccyx is how many fused bones
3-5 rudimentary vertebrae
Median sacral crest is the fused spinous process of the ____
Sacral vertebrae
The lateral sacral crest is the fused transverse processes of the
Sacral vertebrae
In US want to see _______________ i nthe sacroiliac joints
Clear space for articulation
Coccyx is most ______ portion of the spine
Inferior
Does the coccyx have processes or formina
No
Does the coccyx offer support
No
The coccyx provides
Attachment points for some of pelvic floor muecles
parts of superior femur
Head, neck, greater trochanter and lesser trochanter
Characteristics of female pelvis
Bones are lighter and thinner False pelvis is shallow Pelvic cavity is wide and shallow Pelvic inlet round/oval Pelvic outlet comparatively large Subpubic angle Coccyx more flexible, straighter Ischial tuberosities more everted
Male pelvis characteristics
Bones heavier and thicker False pelvis is deep Pelvic cavity is narrow and deep Pelvic inlet heart shaped + smaller Pelvic outlet comparatively small Subpubic angle more acute Coccyx less flexible, more curved Ischial tuberositiies longer, face more medially