Respiratory System
Across
- 2. short structures projecting from a cell and containing bundles of microtubules that move a cell through its surroundings or move fluid over the cell's surface
- 5. protective secretion of the mucous membranes
- 8. a system of organs functioning in respiration and in humans consisting especially of the nose, nasal passages, pharynx, larynx, trachea, bronchi, and lungs
- 10. two spongy organs, located in the thoracic cavity enclosed by the diaphragm and rib cage, responsible for respiration
- 11. progressively smaller tubular branches of the airways
- 12. passing or able to pass air in and out of the lungs normally
Down
- 1. the cavity behind the nose and above the roof of the mouth that filters air and moves mucous and inhaled contaminants outward and away form the lungs.
- 3. The passages that branch from the trachea and direct air into the lungs
- 4. one of the tubules forming the respiratory system of most insects and many arachnids
- 6. tiny sacs of lung tissue specialized for the movement of gases between air and blood
- 7. voice box; passageway for air moving from pharynx to trachea; contains vocal cords
- 9. the metabolic processes whereby certain organisms obtain energy from organic molecules