Rhomboid muscle
Synonyms
Latin: Musculi rhomboidei minores et majores
English: rhomboid major muscle and rhomboid minor muscle
Synergists: M. deltoideus, M. trapezius
Antagonists: M. pectoralis minor
definition
The small and large rhomboid muscles (musculus rhomboideus minor et major) form a four-sided, strongly developed muscle plate that is not externally recognizable because they are completely covered by the trapezius muscle.
course
Insertion: inner shoulder blade margin (margo medialis)
Origin:
- Small rhomboid muscle: spinous processes of the 1st - 7th cervical vertebrae
- Greater rhomboid muscle: spinous processes of the 1st - 4th thoracic vertebra
Innervation: N. dorsalis scapulae, plexus cervivalis C4-5
Figure rhomboid muscle
Rhombus muscle - 1st + 2nd
(Musculus rhomboideus)
- Rhombus Greater Muscle -
Rhomboideus major muscle - Lesser rhomboid muscle -
Rhomboideus minor muscle - Sixth cervical vertebra -
Vertebra cervicalis VI - Seventh cervical vertebra -
Vertebra prominent - First thoracic vertebra -
Vertebra thoracica I - Fourth thoracic vertebra -
Vertebra thoracica IV - Scapula bone -
Spina scapulae - Shoulder blade - Scapula
- Inner edge (of the shoulder blade) - Margo medialis (Scapulae)
- Upper arm shaft - Corpus humeri
- Spine - Vertebral column
- Spinous process (thoracic vertebra) - Spinous process
You can find an overview of all Dr-Gumpert images at: medical illustrations
function
Both the large rhombus muscle and the small rhomboid muscle lift the shoulder blade upwards and in the center when tensed. They thus support the descending part of the in their effect Trapezius. In addition, the two rhombus muscles fix the shoulder blade to the trunk.
Strengthening and stretching
Since the rhomboid muscle (musculus rhomboideus) is not visible from the outside, it is Strength training not paid much attention.
This is useful for contracting the muscle Shoulder raises at.
Further detailed exercises and information can be found here in an overview Weight training
