Head Muscles Flashcards
what muscle elevates and adducts eyeball (cornea moves up and in), and what innervates it?
superior rectus
oculomotor nerve
what muscle depresses and adducts eyeball (cornea moves down and in) and what innervates it?
inferior rectus
oculomotor nerve
what muscle adducts the eyeball only and what innervates it?
medial rectus
oculomotor nerve
what muscle abducts the eyeball only and what innervates it?
lateral rectus
abducens nerve
what muscle elevates and abducts eye ball (cornea moves up and out) and what innervates it?
inferior oblique
oculomotor nerve
what muscle depresses and abducts eyeball (cornea moves down and out) and what innervates it?
superior oblique
trochlear nerve
what muscle elevates eyelid and what innervates it?
levator palpebrae superioris
oculomotor nerve
what smooth muscle elevates eyelid in sympathetic response and what innervates it?
superior tarsal
postganglionic sympathetic axons from superior cervical ganglion
what smooth muscle dilates pupil and what innervates it?
dilator pupillae
postganglionic sympathetic axons from superior cervical ganglion
what smooth muscle constricts pupil and what innervates it?
constrictor pupillae
oculomotor nerve
what smooth muscle relaxes suspensatory ligament to permit lens to round up in near response and what innervates it?
ciliary
oculomotor nerve
what nerve innervates the muscles of the orbit?
oculomotor nerve
EXCEPT lateral rectus (abducens nerve) and superior oblique (trochlear nerve)
what muscle protrudes and retracts the tongue and what innervates it?
genioglossus
hypoglossal nerve
what muscle depresses the tongue and what innervates it?
hyoglossus
hypoglossal nerve
what muscles elevate the tongue and what innervates them?
styloglossus: hypoglossal nerve
palatoglossus: vagus nerve (pharyngeal plexus)