Lab 12 Peritoneum

Question 1

In the ischioanal fossa, the base at the skin and the deepest portions are (S/I) and (M/L). The area nearest the anus is (S/D) and (S/I).

Answer 1

superiorly and laterally

superficial and inferior

Question 2

The recesses of the ischioanal fossa project deep to the _____, laterally toward the ____ and anteriorly to run deep with the deep punch of the ____.

Answer 2

gluteus maximus

obturator internus

urogenital triangle

Question 3

What are the 3 parts of the external anal sphnicter?

Answer 3

subcutaneous, superficial, deep

Question 4

EAS- encircles the anus

Answer 4

subcutaneous part

Question 5

EAS- fibers anchor the ansu to the perineal body (anterior) and the coccyx (posterior) via the anococcygeal ligament

Answer 5

superficial part

Question 6

EAS- a ring of muscle that fuses with the puborectalis of the levator ani/pelvic diaphragm

Answer 6

deep part

Question 7

What is the medial boundary of the ischioanal fossa? Lateral boundary?

Answer 7

medial- inferior surface of the pelvic diaphragm

lateral- fascia of the obturator internus muscle

Question 8

***What PENETRATES the fascia of the obturator internus muscle?

Answer 8

inferior rectal neurovasculature

Question 9

What is found within the pudendal canal?

Answer 9

pudendal nerve and internal pudendal artery ;)

Question 10

Superficial to deep in the urogenital triangle (starting deep to skin)- 6 things

Answer 10

1. superficial perineal fascia
2. deep perineal fascia
3. superficial perineal pouch
4. perineal membrane
5. deep perineal pouch
6. pelvic diaphragm

Question 11

The ischiocavernosus is found near what? What do you have to breach to see this muscle?

Answer 11

near the ischiopubic ramus

breach the deep perineal fascia

Question 12

The superficial transverse perineal muscle attaches between what 2 things?

Answer 12

ischial tuberosity and the perineal body

Question 13

From inferior, the perineal body can be found at the intersection of the ______ and _____ muscles.

Answer 13

superficial transverse perineal and bulbospongiosus muscles

Question 14

Along the sagittal cut the perineal body is sandwiched posterior to the _____ and _____ and anterior to the _____.

Answer 14

vaginal introitus and perineal membrane

external anal sphincter

Question 15

The ____ and ____ are collectively known as the urogenital diaphragm. The pelvic diaphragm is the ____ and its ___.

Answer 15

deep perineal pouch and the perineal membrane

pelvic floor musculature and its fascia