Across
- 1. this decreases when the volume of the thoracic cavity decreases
- 8. innervates the diaphragm
- 10. accessory muscles of respiration consisting of 3 paired muscles on the side of the neck
- 11. When inspiring, this is lower than the pressure in the thoracic cavity, causing the air to rush into the lungs
- 12. pressure in this organ is greater than atmospheric pressure during expiration
- 16. muscles between the ribs, pulling the ribs downward and inward, decreasing thoracic volume
- 18. muscles that help push the diaphragm upwards during expiration
- 19. the external intercostals lift up these bones when they contract
- 20. the external intercostal muscles are involved in both quiet and forced ___
Down
- 2. muscles between the ribs, causing the ribs to rotate, increasing thoracic volume
- 3. accessory muscle of respiration, connects the sternum, clavicle, and mastoid process
- 4. the trachea, bronchi, bronchioles, alveolar ducts, and alveoli are part of the ___ respiratory tract
- 5. innervates the intercostal muscles
- 6. large muscle that separates the abdominal and thoracic cavities
- 7. the internal intercostal muscles are involved in this type of respiration
- 9. the nasal cavity, pharynx, and larynx are part of the ___ respiratory tract
- 13. the diaphragm and external intercostals are involved in inspiration, while the abdominals and internal intercostals are involved in ___
- 14. the respiratory system is divided into the upper and lower respiratory ___
- 15. as the external intercostals do this, the thoracic cavity increases in volume
- 17. shape of the relaxed diaphragm