True about boundary of triangle of auscultation is ?: (A) Lateral boundary by latissimus dorsi, (B) Medial boundary by scapula, (C) Lateral boundary by latissimus dorsi, (D) Medial boundary by trapezius
Answer is D. Triangle of auscultationIt is a small triangular space on the back, near inferior angle of scapula, where the relatively thin musculature allows for respiratory sounds to be heard more clearly with a stethoscope. The sounds of swallowed fluids can be sometimes heard in esophageal obstruction as cardiac orifice of stomach lies deep to this triangle. It is formed byMedially : Lateral border of trapeziusLaterally : Medial border of scapulaInferiorly : Upper border of latissimus dorsiFloor is formed by : 6th and 7th rib with intercostal space between them, rhomboideus major.Apex of lower lobe of both lungs lie beneath this triangle.