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Across 4. tiny openings in aveoli walls 5. seperates the space in teh nose into right and left portions 7. expulsion of the air from the lungs 10. Branched airway leading to air sacs in the lungs 11. Breathing 13. Portion of the digestive tube posterior to the nasal and the oral cavities as well as the larynx 14. Flaplike cartilaginous structure at the back of the tongue near the entrance to the trachea

Down 1. forms part of the mediastinum and lines the inner thoracic cavity ____ pleura 2. Abnormaly deep and prolonged breathing 3. serous membrane attached to the surface of each lung ______pleura 5. Part of the face used for inhaling and exhaling 6. Tubular organ that leads from the larynx to the bronchi 8. type of connective tissue 9. structure between the pharynx and trachea that houses the vocal cords 12. two spongy, saclike respiratory organs in most vertebrates, occupying the chest cavity together with the heart and functioning to remove carbon dioxide from the blood and provide it with oxygen