The lungs, diaphragm, voice box, throat, nose, mouth, and airways (trachea, bronchi, and bronchioles) comprise the respiratory system. Its primary job is to take in oxygen and exhale carbon dioxide. It also serves as a protection for germs and harmful particles. This systems allows us to smell and speak.

Respiratory System: Organs,…

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Are veins bigger than arteries?
No, veins are generally not bigger than arteries. Arteries have thicker, more muscular walls compared to veins, as they need to handle the high pressure of blood being pumped from the heart. This thickness gives arteries a relatively smaller diameter than veins of the same name.

Blood Vessels: Types,…

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