Trivia Question 29 Answer
The answer is D. Leonardo da Vinci in the 1510s. He is said to have injected wax into the ventricles of animals to create a cast that he used as a model for his illustrations. Vesalius also described a communication between the lateral and third ventricles, but not accurately.
Alexander Monro Primus was a Scottish surgeon and the first section head of anatomy at Edinburgh University, establishing a dynasty lasting over 126 years (Primus, son Secundus, and grandson Tertius). However, the foramen is named after Alexander Monro Secundus is known to have provided the first documented accurate specific description of it. He also made many other notable long-standing contributions to the field of neuroanatomy, including a large role in describing the Monro-Kellie doctrine.
Reference
Patel K. et al. Commentary: Alexander Monro of "the foramen of Monro". Neurosurgery 2018;83(4):E146-E152