This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pelvis and Perineum 2, Subject name: Anatomy
A 58-year-old man is diagnosed as having a slowly growing tumor in the deep perineal space. Which of the following structures would most likely be injured? 
Select and explain. 
A. Bulbourethral glands, B. Crus of penis, C. Bulb of vestibule, D. Spongy urethra
A: Bulbourethral glands
Answer: A: Bulbourethral glands 
Explanation: The deep perineal space contains the bulbourethral (Cowper) glands. The crus of the penis, bulb of the vestibule, spongy urethra, and great vestibular gland are found in the superficial perineal space. Greater vestibular glandis in the superficial perineal space between inferior fascia of urogenital diaphragm and membranous layer of superficial perineal fascia