Biology 122 Exam 3 Questions and Answers-Respiratory

Respiration

1.  What are the major differences between conducting zone structures and respiratory zone structures?

Conducting = airflow (nostrils, major bronchioles), Respiratory = gas exchange (alveoli)

2.  What is dead air?

The part of the respiratory system that has no alveoli, and in which little or no exchange of gas between air and blood takes place.

3.  The upper respiratory tract does ,               , &   to inhaled air. Warms, cleanses, humidifies

4.  What is the function of the respiratory mucosa? How does it do its job?

Inhaled dust, pollen, bacteria, other foreign crap gets stuck to it, the mucous glands in the lamina propria supplement mucus produced by goblet cells.

5.  How do intrinsic muscles of the larynx regulate speech?

They pull on the arytenoid and corniculate cartilages, causing the cartilages to pivot (rotate, turn),