Term 3 Exam: Pelvic Girdle: Appendicular Skeleton

Question 1

The skeleton of the lower limb consists of two separate regions, what are they? How many bones in each?

Answer 1

1. Pelvic girdle (2 bones)
2. The free part (30 bones)

Question 2

What four bones make up the adult pelvis?

Answer 2

1. sacrum
2. coccyx
3. right ossa coxae
4. left ossa coxae

Question 3

What does the term “pelvic girdle” refer to?

Answer 3

The right and left ossa coxae

Question 4

What are two key functions of the Pelvic girdle?

Answer 4

1. Protects and supports the viscera in the inferior part of the ventral body cavity
2. Support the weight of the body from vertebral column

Question 5

Each pelvic bone consists of 3 bones fused together, what are those three bones?

Answer 5

1. Ilium
2. Ischium
3. Pubis

Question 6

Both pelvic bones are joined where?

Answer 6

• Anteriorly by the pubic symphysis (fibrocartilage)

and

• Posteriorly by the sacrum to form the sacroiliac joints

Question 7

What is the ilium? (5)

Include:

• What it borders superiorly
• What are spines
• Consists of?

Answer 7

• Largest of the 3 hip bones
• superior part of the hip bone
• consists of a superior ala and inferior body which form part of the acetabulum (socket for femur)
• Superior border - iliac crest
• Spines serve as points of attachment of tendons and ligaments of the trunk, hip and thighs

Question 8

What is the greater sciatic notch?

Answer 8

Allows passage of sciatic nerve

Question 9

What are gluteal lines?

Answer 9

Border the attachment sites of gluteal muscles

Question 10

What is the Iliac Fossa?

Answer 10

Depression where the ilacus muscle attaches

Question 11

What is the Iliac Tuberosity?

Answer 11

Point of attachment for the sacroiliac ligament

Question 12

What is the Auricular surface?

Answer 12

Articulates with the sacrum - forms sacroiliac joint

Question 13

What is the Ischium?

Answer 13

• Inferior and Posterior part of the hip bone
• Most prominent feature is the ischial tuberosity - part that meets the chair when sitting
• Ramus and pubis form the obturator foramen - Largest foramen in the body

Question 14

What is the Pubis?

Answer 14

• Inferior and anterior part of the hip bone
• Comprised of the superior and inferior rami and body
• has pectineal line
• has pubic symphysis

Question 15

What is the Pectineal line?

Answer 15

of the pubis:

helps distiguish between the superior (false) and inferior (true) portions of the bony pelvis

Question 16

What is the pubic symphysis?

Answer 16

the joint between the pubes of the two hip bones

• disc of cartilage

Question 17

What is the pelvic brim?

Answer 17

A line from the sacral promontory to the upper part of the pubic symphysis

Question 18

What is the False Pelvis?

Answer 18

Lies above the pelvic brim

-Contains no pelvic organs except urinary bladder (when full) and uterus during pregnancy

Question 19

What is the true pelvis?

Answer 19

The bony pelvis inferior to the pelvic brim

• has an inlet, an outlet and a cavity
• contains sex organs

Question 20

What is the pelvic axis?

Answer 20

Path of baby during birth