Lesson 2.3 The Respiratory System Flashcards
How is the respiratory system similar to the cardiovascular system?
The respiratory system shares the same responsibility as the cardiovascular system in that it also supplies oxygen to and expels carbon dioxide from the body.
Name the functions of the respiratory system.
The respiratory system also eliminates toxic waste, regulates the humidity and temperature of the air breathed in, and ensures the stability of the blood’s acid-alkaline balance.
How is the respiratory system divided?
The respiratory system is divided into the upper and lower respiratory systems.
What is the upper respiratory system composed of?
The upper respiratory system consists of the nose, nasal cavity, throat, and larynx.
What is the lower respiratory system composed of?
The lower respiratory system refers to the trachea and lungs, including the bronchi, bronchioles, and alveoli.
How does blood interact with the respiratory system?
Blood exchanges carbon dioxide for oxygen through the network of capillaries on the surface of the alveoli, the tiny air sacs that are the destination of inhaled air. The blood, now enriched with oxygen, returns to the heart to be pumped through the rest of the body.
What are some of the symptoms that a lack of iron can cause?
A lack of iron, or lack of blood in the body, causes insufficient oxygen to be transported to the cells, resulting in symptoms of breathlessness, weakness, coughing, and fatigue.
