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
[{'content': 'Main inspiratory muscle is - \nSelect and explain. \nA. Lattissimus dorsi, B. Transversus thoracis, C. Serratus anterior, D. Diaphragm', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Diaphragm Respiratory musclesInspiratory muscles1. During quiet breathing : Diaphragm (most important), external intercostal and interchondral part of internal intercostal.2. During forced inspiration : Sternocleidomastoid, serratus anterior, serratus posterior superior, pectoral is major and minor, erector spinae, scaleni and levator costarum.Expiratory' muscles1. During quiet breathing : Passive process due to passive recoil of the lungs and thoracic wall.2. During forced expiration : Internal intercostal, innermost intercostal, transversus thoracis, serratus posterior inferior, subcostalis, lattissimus dorsi and abdominal muscles (rectus abdominis, internal and external oblique and transversus abdominis).", 'role': 'assistant'}]