Assignment 7 (Equine) Flashcards
Which nerve is responsible for the motor innervation of most of the muscles that move the eye?
oculomotor nerve
Sensory innervation of the globe or eyeball is via the _______ nerve.
opthalmic
Which nerve is responsible for the motor innervation of all but one intrinsic muscles of the larynx?
recurrent laryngeal
What are the functions of the larynx? (3)
- Regulates what enters the trachea
- Prevents ingesta from entering the respiratory tract during swallowing
- Functions in vocalization
What nerve goes through the thyroid foramen?
cranial laryngeal nerve
What is the surgical access point to the laryngeal cavity?
the thyroid notch
What is the purpose of the hyoid apparatus?
It suspends the larynx and tongue from the base of the skull
What does the thyrohyoid bone articulate with?
the rostral cornu of the thyroid cartilage
What does the stylohyoid bone articulate with?
Via a small cartilage called the tympanohyoid with the styloid process of the petrous temporal bone of the skull
Which hyoid bone articulates with the larynx?
thyrohyoid
The caudal border of the soft palate sits ______ relative to the rostral edge of the epiglottis.
Ventral
The epiglottis sits ______ relative to the soft palate.
Dorsal
What provides sensory innervation to the laryngeal muscosa?
Cranial laryngeal n. (branch of vagus n.)
What provides motor innervation to all the intrinsic muscles of the larynx?
caudal laryngeal n.
What provides motor innervation to the the cricothyroideus m.?
cranial laryngeal n.
What muscle is the only dilator of the glottic cleft? Are the vocal folds abducted or adducted by this muscle?
Cricoarytenoideus m.
Contraction of this muscle abducts the vocal folds.
All the intrinsic muscles of the larynx are primarily constrictors that abduct the vocal folds closing the glottic cleft. True or false?
False.
All instrinsic muscles of the larynx are primarily constrictors except cricoarytenoideus.
They ADDUCT the vocal folds to close the glottic cleft.
What causes roaring in the larynx?
laryngeal hemoplegia
What is temporohyoid osteoarthropthy? What bones and joints are affect?
arthritis of the hyoid apparatus
temporohyoid joint and stylohyoid bone affected
