ANATOMY AND PHYSIOLOGY FINAL EXAM TEST 2023

ANATOMY AND PHYSIOLOGY FINAL EXAM TEST 2023 1. Partial contraction following low rate of nerve impulses a. twitch b. tetanus c. treppe d. tone Answer: D (pp 81 – 82) 2. The mechanism for the perception of sound localization is a. higher frequency sound waves are heard louder in the ear .near the source of sound b. lower frequency sound waves are heard are heard farther equally by both ears c. higher amplitude sound waves arrive in the ear near the source of sound d. faster time of arrival at the ear farther from the source of sound Answer: C (pp 656 – 657) 3. The flow of endolymph postrotatory from a counterclockwise direction is a. stopped immediately as one stops rotating b. in opposite direction of rotation in both ears c. continuous in the same direction of rotation d. to the right in right ear but to the left in left ear Answer: C (p 695) 4. Which of the following is true of the conducting system? a. it contains 550 ml of air b. it actively participates with gas exchange c. It is also known as the anatomic dead space d. it is the area of the respiratory system which is perfused but not ventilated Answer: C (pp 477-478) 5. Which is true about intraalveolar pressure? a. it is higher than atmospheric pressure during expiration b. it is the same as atmospheric pressure during inspiration c. it is the same as intrathoracic pressure during inspiration d. does not change during inspiration and expiration Answer: A (pp 478 – 479) 6. Which of the following is true of SURFACTANT? a. its presence decreases the work of breathing b. it is a secretion of the Clara cells of the alveoli c. it is responsible for the elasticity of the respiratory system d. synthesis is only observed perinatally within 48-72 hrs. Answer: A (pp 479-480) 7. The process of gas exchange in the lungs is by a. simple diffusion b. facilitated diffusion c. endocytosis d. filtration Answer: A (pp 506-507) 8. The following have direct effects on the respiratory center in the medulla a. Carbon Dioxide b. Oxygen c. Hydrogen ions d. A and C Answer: D (p 516) 9. True about the Frank-Starling mechanism a. once the heart rate increases above a critical level, heart strength decreases b. strong vagal stimulation decreases heart contraction by 20 to 30% c. cardiac output can be increased by sympathetic stimulation d. greater muscle stretch will result to greater force of contraction Answer: D (p 111-112)