Hths 1111 Unit 17 Quiz Exam Questions (50 Terms) With Verified Definitions Updated 2024

The organelles found on the surface of this epithelium (marked by "C") are _____________. They continually move mucus from the lower respiratory tract superiorly into the laryngopharynx. Together with the secretion of the cells marked with "A", they form the muco________________ry escalator. a. cilia b. flagella c. microvilli d. villi {Ans: a. cilia}At the molecular level, pressure is defined as the: a. number of molecules in a container b. volume of the container c. number of collisions between molecules and the walls of the container d. speed of the molecules in a container {Ans: c. number of collisions between molecules and the. walls of. the container}What ion reacts with H+ to form carbonic acid (H2CO3)? a. bicarbonate (HCO3-) b. carbon dioxide (CO2) c. oxygen (O2) d. water (H2O) {Ans: a. bicarbonate (HCO3-)}Internal respiration is: a. exchange of gases at the alveoli of the lungs b. exchange of gases between blood and tissue c. moving air into and out of the lungs d. transport of respiratory gases to the tissues {Ans: b. exchange of gases between blood and tissue}The structure that divides (bridges) the upper from lower respiratory tract is the: a. alveolus b. bronchus c. larynx