Pelvis

Question 1

Function Obturator Internus

Answer 1

• Lateral rotation of Extended Hip

- Abduction of flexed hip

Question 2

Function Piriformis

Answer 2

• Lateral rotation of extended hip

- Abduction of Flexed hip

Question 3

Function levator Ani

Answer 3

• Formaion of pelvic floor
• Supports viscera
• Reinforce external sphincter
• Vaginal sphincter

Question 4

Function Coccygeus

Answer 4

• Forms pelvic floor; supports organs

- Pulls coccyx forward after defecation

Question 5

Function external urethral sphincter

Answer 5

Compress Membranous urethra

Question 6

Function Compressor urethrae and Sphincter urethrovaginalis (Women only)

Answer 6

CU: Accessory sphincter of urethra

SUV: Accessory Sphincter of urethra and vaginal closing

Question 7

Function ischiocavernosus

Answer 7

Move blood From curry into body of erect penis and clitoris

Question 8

Bulbospongioosus function

Answer 8

• Move blood from parts of clitoris and penis into glands

- In men: Removal of residual urine; Pulsatile emission of semimembranous during ejaculation

Question 9

Function superficial transverse perineal

Answer 9

Stabilize perineal body

Question 10

Function of Iliopsoas

Answer 10

• Hip Flexion
• External rotation of Hip
• Ipsilateral sidebending

Question 11

Function of P-GOGO

Answer 11

• Laterally rotate extended femur

- Abducts flexed femur

Question 12

Function:
Gracilis
Pectineus
AddMag
AddBrev
AddLong

Answer 12

• Adducts thigh

- Medially rotates thigh

Question 13

What are true ligaments of the pelvis?

Accessory ligaments?

Answer 13

True:

• Anterior Sacroiliac
• Posterior Sacroiliac
• Interosseus Sacroiliac

Accessory:

• Sacrotuberous
• Sacrospinous
• Inguinal

Question 14

Function Iliolumbar ligament

Answer 14

• Stablilze anterior motion and rotation L5

Question 15

Function Sacrspinous ligament

Answer 15

• Prevent Anterior rotation of sacrum

Question 16

Function Sacrotuberous

Answer 16

• Prevent anterior oration of sacrum

Question 17

How is fasciae continuity observed in hamstring hyper tonicity?

Answer 17

Hamstring Hypertonicity causes
ipsilateral innominate rotation
posteriorly and can confound
flexion testing

Question 18

Describe Gender differences in Pelvis

Answer 18

Gynecoid (AP = transverse) —> Female

Android (HEart shaped) - Male mostly

Anthropoid (AP>Transverse) —> 23% Females

Platypelloid (Transveres>AP) —> Rarely males, 2% females

Question 19

How does suprapubic angel differ in females?

Answer 19

Wider angle (80-85 as compared to 50-60 in males)

Question 20

What is relaxin?

Answer 20

• Member of insulin-like GF family of proteins

- Act indirectly to promot myometrial relaxation —> Prostacyclin