Tugee Flashcards
What are the two main components of the respiratory system?
Upper and lower respiratory system
What is the main function of the upper respiratory tract?
Protect respiratory system from infection and foreign body inhalation
What are the four types of sinuses?
- Maxillary
- Ethmoid
- Frontal
- Sphenoid
What structure connects the oral and nasal cavities to the larynx?
Pharynx
What are the three divisions of the pharynx?
- Nasopharynx
- Oropharynx
- Laryngopharynx
What is the role of the larynx in the respiratory system?
Voice production, protection of lower respiratory tract, passage and humidification of air
What is the trachea commonly known as?
Windpipe
What maintains the patency of the trachea?
C-shaped rings of cartilage
What are the primary functions of the lungs?
- Gas exchange
- Oxygen transport
What structures are included in the interior of the lungs?
- Bronchi
- Alveoli
- Connective tissue
- Blood vessels
- Lymph vessels
- Nerves
What is the primary function of alveoli?
Gas exchange
What are the three types of cells found in alveoli?
- Epithelial
- Macrophage
- Surfactant
What is the role of bronchi and bronchioles in the respiratory system?
Gaseous exchange and passage of air to and from alveoli
What is the term for the movement of air in and out of the airways?
Ventilation
What muscles are primarily involved in normal quiet breathing?
- Intercostal muscles
- Diaphragm
What happens during inspiration?
Thoracic cavity expands, lowering pressure and drawing air into lungs
What occurs during expiration?
Relaxation of intercostal muscles and diaphragm, causing air to be expelled
What mechanism allows for gas exchange in the lungs?
Diffusion across alveolar and capillary membranes
What does compliance refer to in the context of respiration?
The effort required to inflate the alveoli
Where is the respiratory center located?
Brain stem in medulla oblongata and pons
What are chemoreceptors?
Receptors that respond to changes in partial pressures of oxygen and carbon dioxide in blood
What are pulmonary function tests used for?
Assess respiratory function and determine the extent of dysfunction
What do arterial blood gas measurements indicate?
Degree of oxygenation and adequacy of alveolar ventilation
What is the normal range for SpO2 values?
95% to 100%