The Larynx
What is the larynx?
“voice box” it is involved in producing sound, breathing, and protection for the trachea against food
What is the diaphragm?
Dome shaped muscle, primary muscle for respiration
What are the movable articulators?
Jaw, lips, tongue, soft palate, pharynx
Diagram #1 and #2
Hard Palate and tongue
What is an SOVTE?
Semi occluded vocal tract exercise, creates back pressure within the vocal tract and the mouth is partially closed
What is the vocalis muscle?
Acts like an internal tensor for the vocal folds, and the length tension and mass of the folds determines the pitch of sound
Discuss the intercostal muscles.
Assist the diaphragm and the abdominal muscles in breathing. Located inbetween lungs
External: help ribcage expand outward when air fills lungs
Internal: helps ribcage return inward during exhalation
What are the fixed articulators?
Hardpalate, teeth
#6 and #12
Larynx and Trachea
Why are SOVT's good?
Reduce strain, improve vocal agility, and help achieve achieve adequate breath control and consistency
Discuss the cricoarytenoid muscles?
2 pairs: posterior and lateral
Posterior function: to resist the forward pull on the arytenoid by the vocalis, and open the folds by pulling the arytenoids out to each side
Lateral function: adduct the vocal folds, and important in maintaining proper vocal fold closure
What is the Quadratic lumborum
A paired muscle on the posterior abdominal wall. Helps aid in stabilization of the vertebral column and the 12th rib during spinal movement
What is the conus elasticus?
The protective membrane located in the area on the underside of the folds
#3 and #7
oropharynx and nasopharynx
Why do SOVT's work?
Upper portion of the folds are spread apart, and steady pressure is build in the supraglottal vocal tract behind the semi occlusion. Medial surfaces of the folds become parallel, and the vocal folds will not be pressed together. Phonation pressure is lowered with parallel and slightly separated folds.
What is the Cricothyroid?
Connects to the cricoid carilage, and fans out upward and backward to the thyroid cartilage. It pulls the thyroid cartilage forward and down, stretching the thyroarytenoid muscle, and helps with higher pitches
What is the latissimus dorsi?
Widest muscle in the human body, helps aid in posture and movements in the shoulder joint. Also aids in respiration
What is the trachea and the lungs?
Trachea- The windpipe, a tube that connects the larynx to the bronchi of the lungs
Lungs- soft, elastic, sponge tissue major organ of the respiratory system. It is responsible for gas exchange, oxygen to carbon dioxide
#8, #9, #10
Soft palate, epiglottis, and spinal column
What are 4 benefits of SOVT?
•Help align the vocal folds for efficient vibrations
• Encourages gentle and balanced onsets
• Prevents pressing the sound
• Helps build vocal stamina
• Prevents vocal fatigue
• Helps feel sympathetic vibrations
• Help access higher pitches
• Can reset voice after heavy use
• Acts as laryngeal massage
Discuss the supralaryngeal and infralaryngeal muscles.
Supralaryngeal- active in functions such as swallowing, chewing, and tongue movements. Muscles include:Geniohyoid, hyoglossus, and mylohyoid
Infralaryngeal- active in yawning and inhaling. Muscles include: sternothyroid, omohyoid, and the sternohyoid
What are the specific abdominal muscles we discussed? What is their general purpose?
Primary muscles for exhalation
Muscles: transversus, external and internal obliques, and rectus abdominis muscle
What are the 3 portions of the pharynx?
Nasopharynx, oropharynx, laryngopharynx
#4, #5, #11
hyoid bone, thyrohyoid membrane, esophagus
Lots