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: Anatomy
Mucous secreting glands are absent in : 
Select and explain. 
A. Cervix, B. Vagina, C. Duodenum, D. Oesophagus
B: Vagina
Answer: B: Vagina 
Explanation: B i.e. Vagina - No glands open into vagina & vaginal secretions are derived paly from the mucous discharge of cervix & paly from a transudation through the vaginal epithelium.- Doderlein bacilli (gram +ve) are found in vagina- Vaginal mucosa is line by squamous epithelium - Posterior vaginal wall is longer than anterior - Cytology for evidence of corpus luteal activity (ovulation test) is taken from upper lateral vaginal wall DuodenumJejunumIleumSubmucosal Bruner's glandBrunner's gland & Peyer's patchPeyer's patch (aggregated lymph nodules)present absent present