Axial Muscle Functions Flashcards
Orbicularis Oris
Constricts the mouth
Orbicularis Oculi
Closes the eye
Masseter
Elevates mandible and closes the jaw
Buccinator
Compressed the cheeks (blowing, kissing)
Temporalis
Elevates Mandible
Platysma
Tenses the skin of the neck, depresses mandible
Sternocleidomastoid
BOTH: Flexion of neck
ONE: Rotation, opposite
Scalenes
Elevates first two ribs; cervical Flexion from both
Splenius
BOTH: extension
ONE: rotation, lateral Flexion (same side)
Semispinalis
BOTH: Extension
ONE: lateral Flexion (same side)
Trapezius
Neck Extension
External Intercostals
Elevated Ribs, Aids Inhalation
Internal Intercostals
Depresses Ribs, Aids Exhalation
Quadratus Lumborum
BOTH: Depresses ribs
ONE: Lateral Flexion (same side)
Rectus Abdominis
BOTH: Flexion
ONE: lateral Flexion (same side)
(Depresses ribs, aid exhalation)
External Oblique Abdominis
BOTH: Flexion
ONE: Rotation (opposite side), Lateral Flexion (same side)
Internal Oblique Abdominis
BOTH: Flexion
ONE: Rotation (same side), Lateral Flexion (same side)
Transversus Abdominis
Compression, aids exhalation
Muscles that aid in exhalation
Rectus Abdominis, Transversus Abdominis, Internal Intercostals
Muscles involved in cervical Flexion
Sternocleidomastoid, Scalenes
Muscles involved in Cervical Extension
Trapezius, Splenius, Semispinalis
Muscles to rotate head right
Left Sternocleidomastoid, Right Splenius
4 sit up muscles
(4 abdominal muscles)
Muscles Involved in Right Diagonal Sit-Up
Left External Oblique Abdominis. Right Internal Oblique Abdominis
