1. ............ is a tube-shaped sac attached to and opening into the lower end of the large intestine in humans and some other mammals.

Appendix

Appendex

Appandix

Appendis

2. ............ is a synonym of appendix.

Addendum

Foreword

Introduction

Preface

3. ............ isn't a synonym of appendix.

Addendum

Foreword

Supplement

Afterword

4. Acute inflammation of the ............ is the most common surgical lesion within the abdomen.

vermiform appendix

vermiforme appendix

vermeform appendix

vermiform appandix

5. The vital importance of the early recognition of ............ is unmistakable .

perforating appandix

perfarating appendix

perforating appendex

perforating appendix