system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Main inspiratory muscle is ?
assistant
The correct answer is  Respiratory muscles Inspiratory muscles1. During quiet breathing : Diaphragm (most impoant), external intercostal and interchondral pa of internal intercostal.2. During forced inspiration : Sternocleidomastoid, serratus anterior, serratus posterior superior, pectoralis 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 thoracic, serratus posterior inferior, subcostalis, lattissimus dorsi and abdominal muscles (rectus abdominis, internal and external oblique and transversus abdominis).