Oxygenation Flashcards
The process of providing oxygen to all cells of the body
Oxygenation
Name the 3 functions of the respiratory system.
Obtain oxygen from atmospheric air
Transport air through respiratory tract to alveoli
Diffuse oxygen into blood to be carried to all cells of the body
The exchange of oxygen and carbon dioxide at the cellular level
Respiration
Other name of respiration
Ventilation
Respiratory system function achieved through ventilation
Inspiration and expiration
T/F: Breathing is typically an autonomic process
True
Normal oxygenation depends on these two principles
Healthy development and function of respiratory system
Intricate cellular and organic processes that allow for effective gas exchange
The respiratory system is divided into:
Upper respiratory system and Lower respiratory tract
What are the protective mechanisms of the upper respiratory system?
Sneezing and cilia
The entrance for air into lungs
Trachea
Breathing within the expected respiratory rates
Eupnea
Normal breating rate of newborns
30–80 breaths per minute
Normal breating rate of infants
30–60 breaths per minute
Normal breathing rate of toddlers
20–40 breaths per minute
Normal breathing rate of preschoolers
22–34 breaths per minute
Normal breathing rate of School-age children
15–25 breaths per minute
Normal breating rate of Adolescents
12–20 breaths per minute
Normal breating rate of Adults
12–20 breaths per minute
Normal breating rate of Older Adults
15–20 breaths per minute
Describe the components of the lower respiratory tract.
Trachea –> bronchus –> bronchioles –> alveolar ducts –> alveolar sacs
The site where gases is exchanged.
Alveoli
Describe gas exchange in the alveoli.
Oxygen diffuses across membranes into blood
Carbon dioxide diffuses into the alveoli
Which lung has 3 lobes?
Right lung
What are the two layers that cover the lungs?
Visceral pleura and parietal pleura
It covers surface of each lung.
Visceral pleura
It lines inside of chest wall.
Parietal pleura
Described as loud, high-pitched, heard over trachea and longer on exhalation than inhalation.
Bronchial sounds
Medium in loudness and pitch, heard on each side of sternum, between scapulae
Bronchovesicular sounds
Soft, low-pitched, heard over peripheral lung fields
Vesicular sounds
The drive to breathe depends on _______
level of CO2 in arterial blood
What happens when the level of CO2 in arterial blood rises?
Receptor sites in medulla and pons stimulate increase in rate and/or depth of ventilation
Ability of respiratory system to deliver O2 depends on the following:
Inflated, well-oxygenated alveoli
Well-perfused capillaries