This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Smegma is secreted by - 
Select and explain. 
A. Tyson gland, B. Brenner gland, C. Cowper's gland, D. Bartholin' s gland
A: Tyson gland
Answer: A: Tyson gland 
Explanation: • Tyson’s Glands ultimately produce an oily substance, which, when mixed with shed skin cells, constitute smegma.