Flashcards in Chapter 1- Anatomy, Neuroanatomy, and Physiology of speech mechanism Deck (82)
The exchange of has between organism and its environment
What two functions make up respiration?
Inhalation and exhalation
When we inhale, the chest cavity __________.
How do quiet breathing and breathing for speech difer?
Speech breathing is more conscious and adjusted to meet the demands of speech
Humans generally speak on __________
Describe the process of inhalation
1. Chest and lungs expand
2. diaphragm lowers
3. air flows in through nose and mouth
4. air goes down pharynx and between open VF
5. air continues downward through trachea
6. air reaches lungs
Where are the lungs located?
The larynx sits atop what structure?
How many vertebra are in the spinal column?
Describe the 5 segments of the spinal column
1. 7 cervical (C1-C7)
2. 12 thoracic(T1-T12)
3. 5 lumbar (L1-L5)
4. 5 sacral (S1-S5)
5. 3-4 coccygeal
The thick, dome-shaped muscle that separates the abdomen from the thorax
Which two primary categories of muscles support respiration?
Thoracic muscles of inhalation and abdominal muscles of expiration
move toward midline
move away from midline
space between the VF
What is the purpose of the intrinsic muscles of the larynx?
responsible for controlling sound production
What are the intrinsic muscles of the larynx?
thyroarytenoid, lateral cricoarytenoid, lateral cricoarytenoid, transverse arytenoid, oblique arytenoid, and posterior cricoarytenoid
Which is the primary muscle for abduction?
Which nerve innervates the muscles of the larynx?
Vagus nerve X
What is the purpose of the extrinsic muscles of the larynx?
support the larynx and fix its position
Which extrinsic muscles elevate the larynx?
Suprahyoid muscles (elevators)
Which extrinsic muscles lower the larynx?
infrahyoid muscles (depressors)
What are the 3 layers of the VF?
1. epithelium (outer cover)
2. lamina propria (middle layer- 3 layers)
3. vocalis muscle (body and stability)
Name all the pairs of VF
1. True VF
2. Aryepiglottic folds
3. Ventricular (false) folds
Describe the aryepiglottic folds
Extend from the tips of the arytenoids to the larynx. They separate the laryngeal vestibule from the pharynx and help protect the airway
Describe the ventricular folds
They only vibrate at very low frequencies and compress during coughing and lifting heavy objects
Vocal folds vibrate because of the forces and pressure of air and the elasticity of the vocal folds
Caused by the increase speed of air passing between the vocal folds, is the "sucking" motion of the VF toward one another
Describe the mucosal wave
The cover (epithelium) and the superficial lamina propria and the transition move over the vocalis muscle slide and produce a wave