Which type of fixed dry-chemical fire-extinguishing system introduces a thick concentration of agent into a closed area?

Secondary malignancy means that the neoplasm has:

a. not spread to the organ. b. spread to the organ. c. stopped growing. d. originated in another organ.

What is the only complete circular cartilage of the larynx?

a. Arytenoid b. Corniculate c. Cricoid d. Thyroid