24 Questions
What is the primary function of the respiratory system?
To provide the body with oxygen and remove carbon dioxide
Which part of the respiratory tract is responsible for producing sound?
Larynx
What is the term for the space between the parietal and visceral pleura?
Pleural cavity
What is the primary regulator of respiration?
Carbon dioxide
What is the term for the process of gas exchange between the air we breathe and the blood?
Internal exchange of gases
What is the term for the fluid that prevents the alveoli from collapsing?
Surfactant
What happens when the pressure within the lungs drops lower than atmospheric pressure?
Air flows in
What is the effect of carbon monoxide on the body?
Limits delivery of inspired oxygen to alveoli
During inspiration, which muscle contracts to flatten and drop the thoracic cavity?
Diaphragm
What is the primary factor that determines the direction of gas diffusion during gas exchange?
Differences in pressure
What is the normal breathing rate for an adult?
12-20 breaths/minute
What is the primary function of oxyhemoglobin in the human body?
To transport oxygen
What is the result of hyperventilation?
High oxygen levels and low carbon dioxide levels
What is the term for a decreased rate and depth of breathing?
Hypopnea
During forced expiration, such as during singing or shouting, which muscles are used?
Abdominal muscles
What is the result of the difference in pH between venous and arterial blood on oxyhemoglobin?
The bond between oxygen and hemoglobin is broken
What is the effect of high altitude on the body?
Limits delivery of inspired oxygen to alveoli
What is the result of inadequate alveolar surface area?
Reduced lung capacity
What percentage of carbon dioxide is dissolved in the plasma?
10%
What is the normal range of PaO2 in arterial blood?
75-100mmHg
What is the primary mechanism of gas exchange in the lungs?
Passive diffusion of gases down their pressure gradients
What happens to pulmonary vessels in an area with poor airflow?
They constrict and redirect blood to better ventilated areas
What is the term for the total amount of air that can be exhaled from the lungs after maximal inspiration?
Vital capacity
What is one factor that can affect the oxyhemoglobin dissociation curve?
Anemia
Test your knowledge of the respiratory system, including the nose and nasal cavity, pharynx, larynx, and their functions. Learn about the structures and processes involved in breathing, sound production, and smell. This quiz covers the basics of human anatomy and physiology.
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