Superiorly by the trapezius inferiorly by the latissimus dorsi laterally by the medial margin of the scapula the floor is partly formed by the rhomboideus major and parts of 6th and 7th ribs.
Floor of triangle of auscultation.
The superficial floor of the triangle is formed by the lateral portion of the erector spinae muscles.
The cervical plexus forms within the muscles of the floor of the posterior triangle.
The lateral border of the inferior part of trapezius.
The superior lumbar grynfeltt lesshaft triangle is formed medially by the quadratus lumborum laterally by the posterior border of internal abdominal oblique muscle and superiorly by the 12th rib.
To better expose the floor of the triangle up of the posterior thoracic wall in the 6th and 7th intercostal space a patient is asked to fold their arms across their chest laterally rotating the scapulae while bending forward at the trunk somewhat resembling a fetal position.
The floor of the superior lumbar triangle is the transversalis fascia and its roof is the external abdominal oblique muscle.
Deep to these muscles are the osseous portions of the 6th and 7th ribs and the internal and external intercostal muscles.
This area is near the scapula and becomes enlarged when a person leans forward with arms folded across the chest.
The superior border of latissimus dorsi.
To better expose the floor of the triangle which is made up of the posterior thoracic wall in the 6th intercostal space the patient is asked to fold their arms across their chest medially rotating the scapulae while bending forward at the trunk.
The superficial floor of the triangle is formed by the serratus anterior rhomboid major and the lateral portion of the erector spinae muscles.
The vertebral border of the scapula.
The triangle of ausculation of the lungs is situated posterior and superficial to the scapula.
The triangle of auscultation is a small area of the back where three muscles trapezius latissimus dorsi and rhomboideus major converge.
To better expose the triangle and listen to respiratory sounds with a stethoscope patients are asked to fold their arms across their chest laterally rotating the scapulae while bending forward at the.
Typically the triangle of auscultation is covered by the scapula.
It descends down the neck within the prevertebral fascia to innervate the diaphragm.
Dorsally on each side of the trunk the triangle of auscultation is the area bounded by.
A major branch of this plexus is the phrenic nerve which arises from the anterior divisions of spinal nerves c3 c5.
The triangle of auscultation is a space on the back where the relatively thin musculature allows for respiratory sounds to be heard more clearly with a stethoscope.
Typically the triangle of auscultation is covered by the scapula.
Deep to these muscles are the osseous portions of the 6th and 7th ribs and the internal and external intercostal muscles.
