Family and Communcation

Topics: Muscles of the upper limb, Brachial plexus, Scapula Pages: 22 (2702 words) Published: April 30, 2014
ANATOMIC KINESIOLOGY
JOINT ACTIONS OF INTEREST
&
MUSCLES MOST INVOLVED FOR EACH ACTION

Scapular (Shoulder Girdle) Actions:

Elevation: upward movement (shoulder shrug)
Depression: downward movement (return from shoulder shrug)
Abduction: (protraction) away from the vertebral column – baseball stretch Adduction: (retraction) toward vertebral column – pinching shoulder blades together Upward Rotation: scapula’s inferior angle moving away from midline – raising arms Downward Rotation: scapula’s inferior angle towards midline – return from raising arms

ELEVATIONupward movement – going against gravity

Upper Trapezius {Relative Position to Relevant Landmark:}

Superficial muscle3 sections (upper, middle & lower)posterior

Proximal Attachment: base of skull, occipital bone, posterior ligament of neck and spinous process of the last cervical and all the thoracic vertebrae

Distal Attachment: posterior aspect of the lateral third clavicle

Innervation: spinal accessory (cranial XI) nerve

Levator Scapula {Relative Position to Relevant Landmark:}

Deep lying muscleLateral posterior

Proximal Attachment: upper four cervical vertebrae on the transverse processes

Distal Attachment: superior angle of the scapula (medial border of scapula above spine)

Innervation: dorsal scapular nerve

Rhomboids {Relative Position to Relevant Landmark:}(all covered up)

Deep lyingDiagonal orientation – between vertebral column & scapulaposterior

Proximal Attachment: spinous processes of last cervical and first five thoracic vertebrae

Distal Attachment: vertebral (medial) border of the scapula on its posterior aspect

Innervation: scapular nerve
DEPRESSIONdownward movement – going with gravity

Pectoralis Minor {Relative Position to Relevant Landmark:}

AnteriorDiagonal orientation – also vertical alignment

Proximal Attachment: exterior surface of the third to fifth ribs

Distal Attachment: coracoids process of the scapula

Innervation: medial pectoral nerve

Lower Trapezius {Relative Position to Relevant Landmark:}

Posterior3 sections (upper, middle & lower)

Proximal Attachment: base of skull, occipital bone, posterior ligament of neck and spinous process of the last cervical and all the thoracic vertebrae

Distal Attachment: medial third of the inferior aspect of the scapular spine

Innervation: spinal accessory (cranial XI) nerve

ABDUCTION (PROTRACTION)moving away from vertebral column

Anteriordiagonal orientation – also vertical alignment

Pectoralis Minor {Relative Position to Relevant Landmark:}

Proximal Attachment: exterior surface of the third to fifth ribs

Distal Attachment: coracoids process of the scapula

Innervation: medial pectoral nerve

Serratus Anterior {Relative Position to Relevant Landmark:} (passes right over the subscapular fossa)

Deep lying muscleAnteriorsandwhiched between rib cage and scapula (rides overtop)

Proximal Attachment: anterior lateral surface of the upper eight to nine ribs

Distal Attachment: anterior aspect of vertebral (medial) border of scapula

Innervation: long thoracic nerve
ADDUCTION (RETRACTION)moving towards vertebral column

Middle Trapezius {Relative Position to Relevant Landmark:}

Posterior3 sections (upper, middle & lower)

Proximal Attachment: base of skull, occipital bone, posterior ligament of neck and spinous process of the last cervical and all the thoracic vertebrae

Distal Attachment: superior aspect of the scapular spine (whole length)

Innervation: spinal accessory (cranial XI) nerve

Rhomboids {Relative Position to Relevant Landmark:}

Deep lyingDiagonal orientation – between vertebral column & scapulaposterior

Proximal Attachment: spinous processes of last cervical and first five thoracic vertebrae

Distal Attachment: vertebral (medial) border of the scapula on its posterior aspect...
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