Respiration
What is the function of the internal intercostal muscles during breathing?
The internal intercostal muscles depress the rib cage, aiding in forced exhalation.
What is the pressure between the lungs and the thorax, and why is it important?
Always negative. Keeps the lungs expanded and prevents collapse during breathing.
When humans swallow, the larynx completes these actions
Oxygenated air travels this path during inhalation to its final destination of gas exchange
Trachea, Bronchi, Bronchioles, Terminal Bronchioles, Respiratory Bronchioles, Alveolar Duct
What system provides the power source for speech production?
The respiratory system
Which muscle flattens to enlarge the thoracic cavity, and what role does it play in respiration?
The diaphragm flattens to enlarge the thoracic cavity and is the primary muscle of inspiration.
What happens to the volume of the thoracic cavity when the abdominal muscles contract?
The volume of the thoracic cavity decreases.
The epiglottis completes this action during a swallow:
Epiglottic Inversion
During ventilation
O2 is transported from atmospheric air to the alveoli for gas exchange
Why is respiratory control important for speech intelligibility?
It regulates loudness, phrase length, and airflow
How does contraction of the diaphragm affect the thoracic cavity?
When the diaphragm contracts, it increases the vertical dimension of the thoracic cavity, allowing inhalation.
When does exhalation occur in terms of alveolar pressure?
Exhalation occurs when alveolar pressure is greater than atmospheric pressure.
During a normal swallow, the subglottic pressure is:
Positive
The 3 intercostal muscles are:
Internal, External, and Innermost Intercostal Muscles
What happens to breathing patterns when a person switches from quiet breathing to speaking?
Breathing becomes more controlled and purposeful
Oxygen enters cells of the body mostly via
red blood cells as HbO2, where Hb and O2 separate to allow the passage through interstitial fluid
Which structure connects the larynx to the bronchi and allows air to pass toward the lungs?
Trachea
During a normal swallow, the vocal folds complete this action
Vocal Folds Adduction
Deoxygenated blood travels from the tissues of the Body to the lungs via
The pulmonary artery
What term describes the grouping of words spoken on a single breath?
Breath group
When does inhalation occur in terms of alveolar pressure?
Inhalation occurs when alveolar pressure is less than atmospheric pressure.
What paired organs expand and recoil to allow air movement during breathing?
Lungs
What is the epiglottis' function?
Acts as a lid so the food can only go down the esophagus and into the stomach
The primary muscles of inspiration is/are the
diaphragm and 3 intercostal muscles
Which structure separates the thoracic cavity from the abdominal cavity?
Diaphragm