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Respiratory System Just Breathe!
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The Nose (canine) Nasal Plate 2. Nasal Philtrum
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The canine head showing respiratory apparatus
1. Nostril; 2, 3, 4 Nasal concha; 5, Frontal sinus; 6. Hard palate; 8. Tongue; 8’ Oropharynx (the space); 9. Soft palate; 10’ Nasopharynx (the space); 10 Epiglottis; 12 trachea; 13 Esophagus
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Paranasal Sinuses Canine Porcine
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Laryngeal Cartilages in the Horse
Epiglottic; 2. thyroid; 3. cricoid; 4 arytenoid; 5 trachea; 6. cricoarytenoid joint; 7. crocothyroid joint (You do not have to be able to name these all.
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Complex muscles control laryngeal movement
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Median section of Equine larynx
1. Epiglottis; 2. corniculate process of arytenoid cat.; 3 Vestibular fold; 4 Vocal fold (cord); 5. Laryngeal ventricle; 6. Lamina of cricoid cart; 7. Cricothyroid ligament
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Photograph of the same section
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Transverse section of larynx
2. Glottis; 3. Vocal ligament in vocal fold; 8,9,10 laryngeal cartilaages; 4, 5, 6 laryngeal muscles Examples: Roaring horses, laryngeal hemiplegia
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Transverse section of A canine and B bovine tracheas
1. Mucous membrane; 2 tracheal cartilage; 4. Tracheal muscle (external in dogs, internal in cattle.
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Schematic of the Pleural Cavity
1. Costal pleura; 2. Mediastinal pleura; 3. Diaphragmatic pleura; 4. Visceral Pleura; 5. Diaphragm 6. Pericardium
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Transverse Section of the canine thorax
Note the heart suspended within the pleura and the pericardium. 1,2 pleura; 4. pericardium; 6 aorta; 7 esophagus; 8 tracheal bifurcation; 10 heart
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The Canine Thorax (for orientation)
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Lungs A, B Pig C, D Dog
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Pig Lungs 1. Trachea; 2 pulmonary trunk; 3. Pulmonary veins; 4 Bronchus
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Equine Lungs and Heart
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Structures to Note Trachea Bronchi Bronchioles Texture of alveoli
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