Lesson 6B (Part 3)

Question 1

What muscle makes up the anal triangle?

Answer 1

The sphincter ani muscle

Question 2

What does the sphincter ani muscle surround?

Answer 2

The anal canal

Question 3

What are 3 extrapelvic muscles?

Answer 3

1. Gluteus maximus
2. Gluteus medius
3. Gluteus minimus

Question 4

What extrapelvic muscle is most anterior?

Answer 4

The gluteus minimus

Question 5

What extrapelvic muscle is most lateral?

Answer 5

The gluteus medius

- forms part of the but

Question 6

What extrapelvic muscle is most posterior?

Answer 6

The gluteus maximus

Question 7

What muscle forms the anterolateral wall of the minor pelvis?

Answer 7

Obturator internus

Question 8

Which muscles fill the greater sciatic notch?

Answer 8

The piriformis

Question 9

Which muscles fill the lesser sciatic notch?

Answer 9

The obturator internus

Question 10

What are the 2 muscles of the pelvic diaphragm?

Answer 10

1. Levator ani

2. Coccygenuous

Question 11

What level does the aorta bifurcate?

Answer 11

L4

Question 12

Where do to iliacs bifurcate?

Answer 12

L5-S1

Question 13

What do the iliacs bifurcate into?

Answer 13

Internal and external iliac arteries

Question 14

What does the external iliac follow?

Answer 14

The pelvic brim

Question 15

What does the external iliac eventually become?

Answer 15

The femoral artery

- legs

Question 16

What does the internal iliac arteries supply? (2)

Answer 16

1. Pelvic wall
2. Pelvic organs

• true pelvis

Question 17

How is blood rained from the pelvis?

Answer 17

Through the internal iliac veins and its tributaries

Question 18

Where does the aorta course after it bifurcates?

Answer 18

Over the SI joints

- L5/S1