Respiratory System

4. Trachea is joined by _____ ligaments to allow flexibility.
8. Organ of ____ has muscle contractions that change tension in ligaments. As air moves past ligaments, vibration will cause voice.
9. Divides the pharynx into nasal and oral
11. Connects the pharynx to the trachea.
12. This part of the nose will stay moist because of the nasolacrimal duct.
14. The cartilage of the larynx.
17. Air-filled cavity within facial bones of the skull.
20. _______ and pigs have an accessory lung found above the right lung.
23. Moving air into and out of the lungs.
26. Conchae bones that separates the nasal cavity into passages. Have silts so air can enter the sinuses.

1. Rapid, shallow breathing.
2. Abnormal slowness of breathing.
3. Receptors in the ___signal to close the epiglottis to block the trachea.
5. Amount of gas in air that can be expressed as ______ and measured in millimeters of mercury.
6. Increased depth or frequency of breathing.
7. Bronchi divide into _______.
10. About 7% dissolves in the body and combines with water.
13. In the external stage of gaseous exchange, PO2 in the lungs is __ than the PO2 in the blood.
15. In the internal stage of gaseous exchange, PCO2 in the blood is ___ than the PCO2 in the tissues.
16. _____ move mucus to the pharynx.
18. Ventilation + Gas Exchange.
19. Alveolar fluid contains pulmonary ______ to reduce surface tension and promote stability.
21. Depression splitting the lip.
22. Parts of the respiratory tract that is NOT involved in gaseous exchange.
24. _____ epithelium found at the caudal part of the nasal cavity.
25. ____ is required to yield energy from glucose in the form of ATP. Water and CO2 are the by-products.