Chapter 3: A&P of Speech & Language Flashcards
What is inspiration?
Drawing air into the lungs
Increase in thoracic cavity volume
What is expiration?
Breathing air out from the lungs
Decrease in thoracic cavity volume
What is respiration?
Movement of air into the lungs allowing for oxygen and carbon dioxide exchange.
Describe the thoracic cavity.
Located in the upper part of the trunk
Contains respiration and circulation organs
Ribcage and sternum provide protection
What is the trachea?
“Windpipe,” below the larynx and splits off into the lungs.
Define cartilage.
Firm, fibrous, strong connective tissue.
How many muscles are in the respiratory system?
26 pairs
What is the diaphragm?
Large, dome-shaped muscle that separates thoracic/abdominal cavity.
What are the muscles between each rib?
External/Internal Intercoastal muscles
List the process of respiration.
- Brainstem sends message for inhalation
- Diaphragm contracts
- Volume increases, pressure decreases
- Greater environment pressure flows into alveoli and they expand
- Alveoli deflates (expiration)
- Pressure increases, air is forced out
What is the larynx?
“Voicebox”
Stacked structure
Movement of larynx alters aspects of voice
What is the thyroid cartilage?
Cartilage that encloses and protects the vocal folds.
Describe the Adam’s Apple.
Laryngeal Prominence
Front point of the larnyx
Describe the cricoid cartilage.
Located on top of the first tracheal ring
Circular shape
Describe the function of the artneoid cartilage.
Rotates to open/close vocal folds
Pivots to change pitch