Since we've been married my DrH has always been "studying" medicine. By virtue of that fact, I too have been studying medicine. I vividly recall driving to my parents home, about 3 hours from where we were living, with a huge stack of flashy flash cards. He was studying for Step 2 or 3 I don't remember. The front of the card would have a question like: Which of the following is NOT a common side effect of x... and there would be 4 or 5 choices. I would read these cards to him while he was driving and then give him the answers on the back. After doing this for a few years I started to feel fairly confident in my ability to diagnose (based on the flash cards, of course).
Even now, I will hear something and think "why or how do I know that? Oh, yeah - there was a flash card!"
In residency I don't help with flash card study so much. What I get now are images that my husband will put in front of me to see if I know what is wrong. Last night he did it with an image of the cervical spine. And I got it right! Slipped disk there, and disk compressions below. Yeah, I'm ready for my second career in Radiology. He then went on to explain how they were going to fix it. He is a fix it man.
Oh, and maybe your husband is like this too. I have to be careful when I ask a medical question because he likes to give an entire lesson. Last night it was on the circulatory system. I was really curious how the blood found it's way home after being severed/amputated. 30 minutes later and a few drawings on a scrap piece of paper and I have my answer. He would make a great teacher.