Epicranial, Auricular, Middle ear, Intraocular muscles Flashcards
Origin of Occipitofrontalis
Frontalis: galea aponeurotica
Occipitalis: Superior nuchal line
Insertion of Occipitofrontalis
Frontalis: skin of eyebrows
Occipitalis: galea aponeurotica
Action of Occipitofrontalis
Elevates the eyesbrows and wrinkles the forehead
Origin of Anterior Auricular
Galea aponeurotica anterior to ear
Insertion of Anterior Auricular
Anterior surface of auricle
Action of Anterior Auricular
Elevates and draws auricle forward
Origin of Posterior Auricular
Mastoid process
Insertion of Posterior Auricular
Posterior surface of auricle
Action of Posterior Auricular
Elevates and retracts auricle
Origin of Superior Auricular
Galea aponeurotica superior to ear
Insertion of Superior Auricular
Superior surface of auricle
Action of Superior Auricular
Elevates and retracts auricle
Origin of Stapedius
Walls of the pyramidal eminence
Insertion of Stapedius
Neck of stapes
Action of Stapedius
Dampens vibration of the stapes
Origin of Tensor Tympani
Cartilaginous auditory tube and the greater wing of the sphenoid which lies adjacent to it
Insertion of Tensor Tympani
Manubrium of the malleus
Action of Tensor Tympani
Dampens vibrations of the tympanic membrane
Origin of Ciliary
Meridonal fibers: scleral spur
Circular fibers: encircles the ciliary process
Insertion of Ciliary
Meridonal fibers: ciliary process
Circular fibers: encircles the ciliary process
Action of Ciliary
Relaxes the suspensory ligament of the lens
Origin of Dilator Pupillae
Outer margin of iris
Insertion of Dilator Pupillae
Inner margin of iris
Action of Dilator Pupillae
Dilates the pupils
Origin of Sphincter Pupillae
Encircles iris
Insertion of Sphincter Pupillae
Encircles iris
Action of Sphincter Pupillae
Constricts the pupil