Pudendal nerve and internal pudendal vessels — Flashcards

Flashcard 1: The obturator artery takes off from the _____ artery

Answer: internal iliac

Flashcard 2: _____ hemorrhoids receive somatic innervation from the pudendal nerve

Answer: External

Flashcard 3: Which artery supplies the anal canal below the pectinate line?

Answer: Inferior rectal artery (branch of the internal pudendal artery)

Flashcard 4: The femoral nerve is commonly injured due to _____.

Answer: pelvic fracture

Flashcard 5: What is a vesicourachal diverticulum?

Answer: Partial failure of the urachus to obliterate at its distal end (bladder end)

Extra: The urachus is a remnant of the allantois. Types of urachal abnormalities: 1. Patent urachus: Total failure to obliterate (urine leaks from umbilicus). 2. Urachal cyst: Failure of the central portion to obliterate. 3. Urachal sinus: Failure of the proximal (umbilical) end to obliterate. 4. Vesicourachal diverticulum: Failure of the distal (bladder) end to obliterate (outpouching of the bladder).

Flashcard 6: What is the clinical presentation and cause of a patent urachus?

Answer: Urine discharge from the umbilicus due to failure of the urachus to obliterate

Extra: The urachus is a remnant of the allantois, which connects the bladder to the umbilicus. Persistence of the entire lumen results in a patent urachus.

Flashcard 7: wall of bladder

Answer: mesoderm

Flashcard 8: anal canal BELOW the pectinate line

Answer: surface ectoderm

Flashcard 9: How many coccygeal spinal nerves are there?

Answer: 1

Flashcard 10: How many sacral spinal nerves are there?

Answer: 5