Pelvic Diaphragm

Question 1

Answer 1

Obturator Internus

Question 2

Obturator Internus

Is this muscle a true pelvic diaphragm?

Where does the tendon pass?

Where does it end?

What action does it create?

Answer 2

No. Lower extremity muscle.

Tendon passes around lesser sciatic notch.

Greater trochanter

Lateral rotator of the thigh.

Question 3

Answer 3

Levator Ani Muscle

Question 4

Levator Ani Muscle

What are its attachments?

What connective tissue covers it?

What are the three parts of that muscle?

What nerve Innervates?

Muscular purpose.

Answer 4

Body of pubis, arcus tendineus, and ischial spine.

Coccyx raphe.

Puborectalis, Pubococcygeus, Iliococcygeus

S4.

Supports pelvic floor and viscera.

Question 5

Answer 5

Coccygeus Muscle

Question 6

Coccygeus Muscle

Where is this muscle?

What does this muscle attach to?

Innervation?

Function?

Answer 6

Ischial spine and Sacrospinous ligament.

Attaches to coccyx and lower sacrum.

S4 and S5

Supports and raises pelvic floor and viscera.