<prompt> Upper boundary of quadrangular space is formed by:Teres majorTeres minorLong head of tricepsSurgical neck of humerus  <response>: Boundaries of quadrangular spaceAbovesuperior: the subscapularis and teres minorBelowinferior: the teres majorMedially: the long head of the triceps brachiiLaterally: the surgical neck of humerus 