<Dd> <Dl> <Dd> Four muscles attach to the medial border . Serratus anterior has a long attachment on the anterior lip . Three muscles insert along the posterior lip, the levator scapulae (uppermost), rhomboid minor (middle), and to the rhomboid major (lower middle). </Dd> </Dl> </Dd> <Dl> <Dd> Four muscles attach to the medial border . Serratus anterior has a long attachment on the anterior lip . Three muscles insert along the posterior lip, the levator scapulae (uppermost), rhomboid minor (middle), and to the rhomboid major (lower middle). </Dd> </Dl> <Dd> Four muscles attach to the medial border . Serratus anterior has a long attachment on the anterior lip . Three muscles insert along the posterior lip, the levator scapulae (uppermost), rhomboid minor (middle), and to the rhomboid major (lower middle). </Dd> <Ul> <Li> <P> Left scapula . Medial border shown in red . </P> </Li> <Li> <P> Animation . Medial border shown in red . </P> </Li> <Li> <P> Still image . Medial border shown in red . </P> </Li> <Li> <P> Levator scapulae muscle (red) </P> </Li> <Li> <P> Rhomboid minor muscle (red) </P> </Li> <Li> <P> Rhomboid major muscle (red) </P> </Li> </Ul>

Which part of the scapula serves as an attachment site for both the rhomboids and serratus anterior