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Respiratory System

Crash Course for ABS 494

QuestionAnswer
Left Lung Only consists of a superior and inferior lobe, separated by the oblique fissure, due to the heart's apex pointing to the left
Right Lung Consists of a superior, middle, and inferior lobe, separated by a horizontal fissure (superior/middle) and an oblique fissure (middle/inferior)
Oblique fissure Fissure in the lobes of the lungs that separates the lobes; separating superior from inferior in the left and middle from inferior in the right
Hyoid Horseshoe-shaped bone not directly attached to any other bone. It helps in swallowing and speaking, bracing the tongue, larynx, and pharynx
Thyroid cartilage Forms much of the front wall of the larynx and protects the vocal cords (vocal folds)
Cricoid Cartilage A complete ring of cartilage that encircles the trachea, serving as an attachment point for muscles, cartilage, and ligaments involved in opening and closing the airway and producing speech
Trachea The "windpipe"; a cartilaginous tube that connects the larynx to the bronchi of the lungs
Main (primary) bronchus The trachea divides into the right and left bronchi along the carina, the right and left bronchi being termed this
Lobar (secondary) Bronchi Bronchi arising from the main bronchi that deliver oxygen to the lobes of the lungs; there are three on the right side and two on the left
Segmental (tertiary) Bronchi Bronchi arising from the lobar bronchi that each supply a bronchopulmonary segment.
Alveoli Very small and hollow cavities in the lungs that meet with the pulmonary capillaries, where gas exchange takes place
Carina of trachea A ridge at the base of the trachea, where the trachea forks into the right and left bronchi (the main bronchi)
Bronchioles Small branches of bronchi that eventually lead into the alveoli
Created by: Rylyn27463
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