Phonetics- Ch 3 Flashcards
Thoracic cavity
Chest cavity; during inhalation it expands in order to make room for the expansion of the lungs; part of the human body between the head/neck and the abdomen
Diaphragm
Major muscle that separates the abdominal cavity from the thoracic cavity; it lowers during inhalation
External intercostal muscles
Muscles located between the ribs that aid in inhalation; superficial to the internal intercostals
Sternum
The breast bone
Negative pressure
As the lungs expand, the pressure in the lungs becomes less than the air pressure in the environment; a drop in air pressure
Internal intercostal muscles
Rib cage becomes smaller as it lowers due to the relaxation of the inhalation muscles and the contraction of these muscles; located between the ribs but deep (beneath) the external intercostals; aid in exhalation
Trachea
Windpipe; connects the lungs with the larynx; a tube comprised of cartilaginous rings embedded in muscle tissues
Larynx
Voice box ; composed mainly of muscle and cartilage; attached inferiorly (below) the trachea and superiorly (above) to a “floating” bone known as the hyoid bone; responsible for phonation
Hyoid bone
“Floating” bone; only bone in the human body that does not attach to another bone; has muscle attachments to the tongue and to the mandible; provides structural support for the larynx
Mandible
Lower jaw
Vocal folds or vocal cords
Elastic folds of tissue, primary composed of muscle
Thyroid cartilage
Most anterior cartilage of the larynx to which the vocal folds attach; the notch of this forms the “Adam’s apple”
Arytenoid cartilage
Paired cartilages of the larynx that attach to the superior portion of the cricoid cartilage; each vocal fold attaches to one arytenoid cartilage
Cricoid cartilage
Most inferior to the cartilage of the larynx; encircles the larynx; looks somewhat like a class ring with the band facing anterior lay and the rings feature’s facing posteriorly
Glottis
Space between the vocal folds
Subglottal pressure
Air pressure applied to the inferior surface of the vocal folds (glottis); the air pressure necessary to blow the vocal folds apart
Bernoulli effect
Drop in air pressure, created by an increase in airflow through a constriction; helps explain vocal fold adduction
Phonation
Vibration of the vocal folds in creation of a vocal sound
Voiced
Phoneme produced with vocal fold vibration
Voiceless
Phoneme produced without vocal fold vibration
Abduction
Vocal folds remain apart to allow air to flow from the lungs through the glottis to the oral and nasal cavities; movement of the vocal folds away from the midline (closed) position
Adduction
When producing voiced phonemes the vocal folds are brought together; movement of the vocal folds toward the midline (closed) position
Fundamental frequency
Basic rate of vibration of the vocal folds
Habitual pitch
Inherent voice pitch; fundamental frequency of a given individual
Epiglottis
Cartilaginous structure that protects the larynx; diverts food away from the trachea and toward the esophagus