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...the outward appearance of these ailments is easily grasped by the senses. However, what is hidden deep within the body requires a person with a mind trained in both the functions and uses of the parts, and especially in the preceding study of anatomy. This study has taught us many things, including the unique nature of each part's essence. For example, there is a certain cartilaginous substance along the rough arteries original: "traheas arterias" / "τραχείας ἀρτηρίας"; this term refers to the trachea and bronchial tubes, distinguished from "smooth" blood vessels by their ridged texture. of the lung, which is called a bronchion original: "bronchion" / "βρογχίον"; the smaller air passages within the lungs.. Only those who have seen this for themselves through dissection can truly know its character.
If this part is ever coughed up during a fit of coughing, we conclude that a very large ulcer exists in the lung, caused by erosion or decay. This same type of tissue also exists throughout the neck, situated between the throat and the lung; however, such a large ulceration cannot occur there, as the animal would die before it could happen. [379] It can occur in the lung, however, because that organ decays easily due to its moisture and is readily eroded by harmful humors original: "humoribus" / "χυμῶν"; in Galenic medicine, these are the bodily fluids whose balance or imbalance determines health and disease.. Additionally, the bronchi within the lung are small. It is not possible for just a portion of them to rot away; instead, the entire bronchus is brought up... The Latin text breaks off mid-word with "re-". This likely intended to be "rejectum," meaning "thrown back" or "coughed up."