Practical 3 Flashcards
Orbicularis oris
Compresses and protrudes lips
Zygomaticus
Elevates corner of mouth
Platysma
Tenses skin of neck, depresses mandible
Frontalis
Elevates eyebrows
Occipitalis
Tenses and retracts scalp
Buccinator
Compresses cheeks
Masseter
Elevates mandible
Temporalis
Elevates mandible
Sternocleidomastoid
Flex and rotate neck to opposite side
If both are contracted flexes neck
Origin: sternum and clavicle
Insertion: mastoid process
Erector spinae: iliocostalis
Extend vertebral column
Erector spinae: longissimus
Extend vertebral column
Erector spinae: spinalis
Extend vertebral column
Rectus abdominis
Flexes trunk, compresses abdomen
Transverse abdominis
Stabilizes spine, compresses abdomen
External oblique
Flex trunk, rotates trunk
Internal oblique
Flex trunk, rotates trunk
Trapezius
Elevate, retract and depress scapula
Origin: cervical and thoracic vertebra, occipital bone
Insertion: scapula and clavicle
Rhomboid minor
Adducts scapula
Rhomboid major
Adducts scapula
Levator scapulae
Elevates scapula
Serratus anterior
Protracts scapula
Pectoralis minor
Stabilizes scapula
Deltoid
Abduction at shoulder
Origin: scapula and clavicle
Insertion: humerus
Pectoralis major
Addiction and flexion of shoulder
Origin: ribs, sternum, and clavicle
Insertion: humerus
Lattisimus dorsi
Adduction and extension shoulder
Origin: thoracic and lumbar vertebra, and ilium
Insertion: humerus
Coracobrachialis
Adduction and flexion of shoulder
Supraspinatus
Abduction of shoulder
Infraspinatus
Lateral rotation of shoulder
Teres minor
Lateral rotation of shoulder
Subscapularis
Medial rotation of shoulder