Speech Systems Larynx anatomy and functions
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Larynx is made of... | show 🗑
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Biological Functions of Larynx | show 🗑
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show | attached to thyroid cartilage, does not function for phonation, highly important for swallowing
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show | attachment for many muscles, superior and inferior cornu, notch,
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Cricoid Cartilage | show 🗑
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show | 2 pyramid-like structures at top of cricoid cartilage. Muscular process and vocal processes, attach to muscles (outside) and vocal folds (inside). Many degrees of freedom.
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Cricothyroid Joint | show 🗑
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show | only bone in body that does not articulate to another bone, helps connect tongue base to larynx, supports larynx in neck
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Cavities of Larynx | show 🗑
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show | textbook anatomy point, entry from larynx to pharynx
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show | space between aditus and false vocal folds
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Valleculae | show 🗑
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show | Space between aryepiglottic fold and thyroid cartilage
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Glottis | show 🗑
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show | just superior to true VF, not meant to vibrate, help create the 3-D space of larynx.
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show | attach to cricoid and thyroid cartliages
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Extrinsic Muscles of Larynx (Elevators) | show 🗑
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Extrinsic Muscles of Larynx (Depressors) | show 🗑
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show | 1 pt of attachment in larynx, 1 point of attachment outside larynx, support larynx in cavity, but also helps move larynx as a whole system
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Intrinsic Muslces | show 🗑
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Superior Laryngeal Nerve (SLN) | show 🗑
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RLN (Recurrent Laryngeal Nerve) | show 🗑
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Adductor Muscles | show 🗑
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Abductor Muscles | show 🗑
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Tensor Muscles | show 🗑
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Relaxer Muscles | show 🗑
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True Vocal Folds | show 🗑
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6 degrees of Arytenoid Cartilages | show 🗑
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show | False Vocal Folds, made of aryepiglottic folds
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show | Superficial (main vibrating portion, very flexible), Intermediate (allows anterior to posterior stretch, more dense), Deep (collagen fibers, very dense, protect VF from overstretching)
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show | ligament that goes from arytenoids to thyroid cartilages. Most innermediate ligament
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show | Visual representation of the acoustic signal. Time (horiz axis in millisecs), Frequency (vertical axis in Hz), Intensity (darkness)
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Fundamental Frequency | show 🗑
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Optimal Pitch vs Habitual Pitch | show 🗑
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show | Sound Pressure Level: measured in dB. Reflects acoustic power of signal. Based on ability to build up subglottic pressure.
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show | Voice Range Profile: gives a Phonetogram: comprehensive data about frequency a person can produce.
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MPT: | show 🗑
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S:Z Ratio | show 🗑
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VHI | show 🗑
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CAPE-V | show 🗑
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GRBAS | show 🗑
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show | halogen light source tube through nasal cavity for a birds-eye view of larynx
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show | Same as Nasendoscopy but with a strobe light to see VF movement
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show | measuring how much VF make contact with each other. Often done with Nasendoscopy.
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MAT | show 🗑
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show | FITS INTO MAT. Negative pressure caused by the narrow formation of larynx causes VF to be pulled together again. Because of the increase of velocity of airflow, pressure becomes negative, so the VF come back together.
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show | Cough, Throat clearing, grunt
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show | Simultaneous attack (breath during attack), Breathy attack (breath comes before stop), Glottal Attack (attack prior to airflow)
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show | Pattern of activity vocal folds undergo during vibration
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show | Optimal, habitual register
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show | Glottal Fry, low rough, not much airflow, decreased tension of VF
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show | Falsetto, VF lengthen to thin and reed-like, Vocal ligament is doing most of the vibrating
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Whistle | show 🗑
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