Lecture 4: Bones and Joints of the Pelvic Girdle

Question 1

what does the pelvis include?

Answer 1

includes two coxal bones
sacrum, and the coccyx

the coxal bone is a union of three separate bones:
ilium, ischium, and pubis

Question 2

what is the coxal also known as?

Answer 2

coxal
os coxa
innominate

all names for 1 side/coxal

Question 3

what is the ilium?

Answer 3

forms the large superior “hip”

Question 4

what does the ischium form?

Answer 4

inferior ‘‘sit bones’’

Question 5

what does the pubis form?

Answer 5

'’anterior’’ pubic bone

Question 6

what forms the pelvis?

Answer 6

two hemipelvis’s/coxal bones + sacrum
basin like structure
superior + inferior portions separated by pelvic brim

Question 7

what is the greater pelvis?

Answer 7

considered “false pelvis” as it’s considered part of the abdomen - does not contain pelvic organs
except for the bladder or pregnant uterus
- located superior to pelvic brim

Question 8

what is the lesser pelvis?

Answer 8

'’true pelvis’’ lies below the pelvic brim
surrounds pelvic cavity

Question 9

what is the pelvic inlet?

Answer 9

superior brim of the lesser pelvis

Question 10

what is the pelvic outlet?

Answer 10

inferior opening of the lesser pelvis

Question 11

what are the roles of the pelvis?

Answer 11

-support for the vertebral column
-transmit the force of the upper body downwards
-transmits the force of the lower body upwards
-large area for muscle attachment
-contains + protects pelvic organs

Question 12

what is the primary function of the sacroiliac joint?

Answer 12

transmit the weight of the body from vertebral column to pelvis