This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
All of the following is included in chest wall except? 
Select and explain. 
A. Ribs, B. Thoracic Vertebrae, C. Sternum, D. Lumbar vertebrae
D: Lumbar vertebrae
Answer: D: Lumbar vertebrae 
Explanation: Ans. is 'd' i.e., Lumbar vertebrae Contents Of Chest Wall1. Bony thoracic cage* Ribs* Sternum* Thoracic Vertebrae2. Muscles of the thorax* Diaphragm* Intercostal muscles