Hi Muhammed ,
I entered most of the lecs & in fact the doctor did mention the clinicals alot...& we went and asked him abt. them which was "endocardial cushions"&"abnormalities of cardiac looping" he said it's very important ...his exact words was ( 9b3n hwa hatha ahm shee!!!) esp. "tricuspid atresia"
...but I also heard from other grades that Dr.Abd al- Whed always emphasizes on things that doesn't come in the exam!...

but , my own opinion is that It is important..
also he may give questions that r not included within the limits of subject!!
one thing for sure ( origin & fate ) r verrrrrry important......wish us all luck & good marks