This book is intended for medical students. It allows them to prepare their exams. It also allows them to memorize some very useful notions for their future professional practice. The questions that seem to have an obvious answer, theoretically not to be asked, have been put in this book for the purpose of repetition, strongly recommended for learning. Clarifications of some possible ambiguities will be found in the book of answers and comments which will be published as a complement to this book very soon.