Assignment 2.3 isolated and integrated muscle functions

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Describe functions for isolated and integrated muscles

Transverse abdominis

isolated-increase intra-abdomininal pressure,supports the abdominal viscera
integrated-isometrically stabilizes the lumbo-pelvic-hip complex

Diaphragm

isolated-concentrically pulls the central tendon inferiorly,increasing the volume in the thoracic cavity
integrated-stabilizes the lumbo-pelvic-hip complex

Super erector spinae: iliocostalis,longissimus,and spinalis

isolated-concentrically eccelerates spinal extension,rotation,and lateral flexion
integrated-eccentrically decelerates spinal flexion,rotation and lateral flexion *dynamically stabilizes the spine during functional movements

QuadratusLumborum

isolated-spinal lateral flexion
integrated-eccentrically decelerates contralateral lateral spinal flexion*isometrically stabilizes the lumbo-pelvic-hip complex

Serratus anterior

isolated-concentrically accelerates scapular protraction
integrated-eccentrically decelerates dynamic scapular retraction*isometrically stabilizes the scapula

Rhomboids

isolated-major-concentrically produces scapular retraction and downward rotation
integrated-major-eccentrically decelerates scapular protraction and upward rotation*isometrically stabilizes the scapula
isolated-minor-concentrically produces scapular retraction and downward rotation
integrated-minor-eccentrically decelerates scapular protraction and upward rotation*isometrically stabilizes the scapula

Lower trapezius

isolated-concentrically accelerates scapular depression
integrated-eccentrically decelerates scapular elevation*isometrically stabilizes the scapula

Middle trapezius

isolated-concentrically accelerates scapular retraction
integrated-eccentrically decelerates scapular retraction*isometrically stabilizes the scapula

Upper trapezius

isolated-concentrically accelerates cervical extension,lateral flexion,and rotation*concentrically accelerates scapular elevation
integrated-eccentrically decelerates cervical flexion,lateral flexion,and rotation eccentrically decelerates scapular depressionisometrically stabilizes the cervical spine and scapula

Pectoralis major

isolated-concentrically accelerates shoulder flexion (clavicular fibers),horizontal adduction,and internal rotation
integrated-eccentrically decelerates shoulder extension,horizontal abduction,and external rotation*isometrically stabilizes the shoulder girdle

Pectoralis minor

isolated-concentrically protracts the scapula
integrated-eccentrically decelerates scapular retraction*isometrically stabilizes the shoulder girdle

Anterior deltoid

isolated-concentrically accelerates shoulder flexion and internal rotation
integrated-eccentrically decelerates shoulder extension and external rotation*isometrically stabilizes the shoulder girdle

Middle deltoid

isolated-concentrically accelerates shoulder adduction*isometrically stabilizes the shoulder girdle
integrated-eccentrically decelerates shoulder adduction*isometrically stabilizes the shoulder girdle

Posterior deltoid

isolated-concentrically accelerates shoulder extensions and external rotation
integrated-eccentrically decelerates shoulder flexion and internal rotation*isometrically stabilizes the shoulder girdle

Teres major

isolated-concentrically accelerates shoulder internal rotation,adduction,and extension
integrated-eccentrically decelerates shoulder external rotation,abduction,and flexion*isometrically stabilizes the shoulder girdle

Teres minor

isolated-concentrically accelerates shoulder external rotation
integrated-eccentrically decelerates shoulder internal rotation*isometrically stabilizes the shoulder girdle

Infraspinatus

isolated-concentrically accelerates shoulder external rotation
integrated-eccentrically decelerates shoulder internal rotation*isometrically stabilizes the shoulder girdle

Subscapularis

isolated-concentrically accelerates shoulder internal rotation
integrated-eccentrically decelerates shoulder external rotation*isometrically stabilizes the shoulder girdle

Supraspinatus

isolated-concentrically accelerates abduction of the arm
integrated-eccentrically decelerates adduction of the arm*isometrically stabilizes the shoulder girdle

Biceps brachii

isolated-concentrically accelerates elbow flexion,supination of the radioulnar joint,and shoulder flexion
integrated-eccentrically decelerates elbow extension,pronation of the radioulnar joint,and shoulder extension*isometrically stabilizes the elbow and shoulder girdle

Triceps brachii

isolated-concentrically accelerates elbow extension and shoulder extension
integrated-eccentrically decelerates elbow flexion and shoulder flexion*isometrically stabilizes the elbow and shoulder girdle

Brachioradialis

isolated-concentrically accelerates elbow flexion
integrated-eccentrically decelerates elbow extension*isometrically stabilizes the elbow

Brachialis

isolated-concentrically accelerates elbow flexion
integrated-eccentrically decelerates elbow extension*isometrically stabilizes the elbow

Levator scapulae

isolated-concentricallyaccelerates cervical extension,lateral flexion,and ipsilateral rotation when the scapulae is anchored*assist in elevation and downward rotation of the scapulae
integrated-eccentrically decelerates cervical flexion and contralateral cervical rotation and lateral flexioneccentrically decelerates scapular depression and upward rotation when the neck is stabilizedstabilizes the cervical spine and scapulae

Sternocleidomastoid

isolated-concentrically accelerates cervical flexion,rotation,and lateral flexion
integrated-eccentrically decelerates cervical extension,rotation and lateral flexion*isometrically stabilizes the cervical spine and acromioclavicular joint

scalenes

isolated-concentrically accelerates cervical flexion,rotation,and lateral flexion
integrated-eccentrically decelerates cervical extension,rotation,and lateral flexion*isometrically stabilizes the cervical spine

Longus coli

isolated-concentrically accelerates cervical flexion,lateral flexion,and ipsilateral rotation
integrated-eccentrically decelerates cervical extension,lateral flexion,and contralateral rotation*isometrically stabilizes the cervical spine

Longuscapitis

isolated-concentrically accelerates cervical flexion and lateral flexion
integrated- eccentrically decelerates cervical extension*isometrically stabilizes the cervical spine

Multifidus

isolated-concentrically accelerates spinal extension and contralateral rotation
integrated-eccentrically decelerates spinal flexion and rotation*isometrically stabilizes the spine

Latissimusdorsi

isolated-concentrically accelerates shoulder extension,adduction,and internal rotation
integrated-eccentrically decelerates shoulder flexion,abduction,and external rotationeccentrically decelerates spinal flexionisometrically stabilizes the lumbo-pelvic-hip complex and shoulder

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