Pelvic Cavity I

Question 1

The Anal canal BELOW the Pectinate Line

1. Derivation
2. Nervous Input

Answer 1

• Derived from the ECTODERM
• Somatic Motor innervation
• Sensory Innervation

Question 2

T/F: The Internal Iliac becomes the Femoral Artery

Answer 2

False

• The EXTERNAL Iliac

Question 3

Uterine Artery

Answer 3

• Branched off of Int. Iliac
• Supplies Uterus
• Supplies Vagina

Question 4

Ischio-Cavernosus Muscle

Answer 4

• Maintains ERECTION of Penis and Clitoris
  (By compressing venous drainage)
• Inserts onto Corpus Cavernosum of Penis/Clitoris

Question 5

External Iliac branches into what?

Answer 5

1. Deep Circumflex Artery

2. Inferior epigastric Artery

Question 6

Blood supply to the Perineum

Answer 6

Internal Pudendal Artery

Question 7

Anal Sinus

Answer 7

Small recesses which exude Mucous to aid in the Evacuation fort he anal canal

Question 8

Anorectal Jxn

Answer 8

• B/w Rectum and Anal Canal
• SUP. to Anal Columns
• Pectinate Line

Question 9

Pelvic Diaphragm

Answer 9

• Muscular sheet that covers the Pelvic Outlet

- Forms a muscular sling that supports the pelvic organs

Question 10

Contents of the Superficial Perineal Pouch

Answer 10

1. Bulbo-Spongiosus Muscle
2. Ischio-Cavernosus Muscle
3. Sup. Transverse Perineal Muscle

Question 11

The Anal canal ABOVE the Pectinate Line

1. Derivation
2. Nervous Input

Answer 11

• Derived from the ENDODERM
• Visceral Motor (Symp and Parasymp)
• Sensory Innervation

Question 12

Sup Gluteal Artery Supplies what?

Answer 12

• Piriformis Muscle
• Gluteus Medius
• Gluteus Minimus
• Tensor fascia Latae

Question 13

Superficial Transverse Perineal Muscle

Answer 13

• Stabilize Central Tendon

- Inserts onto Central Tendon

Question 14

Levator Ani consists of what?

Answer 14

1. Pubo-Rectalis
2. Pubo-Coccygeus
3. ILIO-Coccygeus

Question 15

Abdominal Aorta branches

Answer 15

• Testicular/Ovarian Artery
• Inf. Mesenteric Artery
• Median Sacral Artery

Question 16

What nerve fibers make up the SUP. Hypogastric Plexus?

Answer 16

Sympathetic ONLY

Question 17

What are the parts of the Clitoris?

Answer 17

• Angle
• Body
• Glans
• Crus

Question 18

Are the Pelvic Splanchnic nerves Symp or Parasymp?

Answer 18

Parasympathetic

Question 19

What superficial pouch muscles originate from Ischio-Pubic Ramus and Ischial Tuberosity?

Answer 19

1. Superficial Transverse Perineal Muscle

2. Ischio-Cavernosus Muscle

Question 20

What muscle is responsible for narrowing the rectum?

Answer 20

Puborectalis

Question 21

Are the LUMBAR Splanchnic nerves Symp or Parasymp?

Answer 21

Sympathetic

Question 22

What nerve fibers make up the INF. Hypogastric Plexus?

Answer 22

BOTH Symp. And Parasymp.

Question 23

Pampinifrom Plexus

Answer 23

Drains the Testicular Vein

Question 24

Bulbo-Spongiosus Muscle

Answer 24

• Helps with Micturition
• Helps propel Semen
• Assist in Erection for Penis/Clitoris

Question 25

The Common Iliac artery divides into what?

Answer 25

External and Internal Iliac

Question 26

Levator Ani

Answer 26

• Forms muscular sling supporting pelvic organs

- Incomplete Ant. To allow passage of the urethra and vagina

Question 27

What does the INTERNAL Iliac supply?

Answer 27

• Pelvic Organs
• Glutes
• Perineum

Question 28

Are the Sacral Splanchnic Nerves Symp or Parasymp?

Answer 28

Sympathetic

Question 29

Nerve supply to the Pernineum

Answer 29

• Pudendal nerves (Somatic)

- Sacral Automatics