Phonatory System: Intrinsic Muscles Flashcards
Tensor Muscles
Thyroarytenoids (Internal and External)
Internal Thyroarytenoid Attachments
Thyroid, vocal process of arytenoid, vocal ligament
Internal Thyroarytenoid Functions
Tense VF
Relax VF
Shorten VF
External Thyroarytenoid Attachments
Thyroid
Lateral process of arytenoid
External Thyroarytenoid Functions
Tense VF
Relax VF
Shorten VF
Lengthening muscles
Cricothyroids
Cricothyroids Attachments
Cricoid (anterolateral border)
Thyroid
Cricothyroid Function
Lengthen VF
Produces higher pitch
Abductor Muscles
Posterior Cricoarytenoid
Posterior Cricoarytenoid Attachments
Cricoid (posterior side)
Muscular process of arytenoid
Posterior Cricoarytenoid Functions
Abducts VF
Adductor Muscles
Lateral Cricoarytenoids
Oblique Arytenoids (Interarytenoids)
Transverse Arytenoids (Interarytenoids)
Lateral Cricoarytenoids Attachments
Lateral border of cricoid
Muscular process of arytenoid
Lateral Cricoarytenoid Functions
Adducts VF
Oblique Arytenoids (Interarytenoids) Attachments
Muscular process of one arytenoid to the apex of the other
Oblique Arytenoids Function
Adducts VF
Transverse Arytenoids (Interarytenoids) Attachments
Lateral border of one arytenoid to the other
UNPAIRED
Transverse Arytenoids Functions
Adducts VF
Aryepiglottic Attachments
Lateral walls of supraglottal cavity
Aryepiglottic Functions
Pulls epiglottis down to cover and protect the airway