Calculate the area in blue. All numbers are in centimeters (cm). If you need help, scan the QR code in the upper right corner on the opposite page
A) 5.12 square centimeters
B) 10.24 square centimeters
C) 20.48 square centimeters
D) 64 square centimeters
E) 96 square centimeters
Answer: B
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The main function of vertebrate erythrocytes is the storage and transport of __________
Fill in the blank with the correct word.
Match each term with its definition or description.
a. respiratory membrane b. respiratory mucosa c. pharynx d. larynx e. trachea f. alveoli g. surfactant h. primary bronchi i. bronchioles j. pleura k. respiratory tree l. upper respiratory tract m. lacrimal sacs n. alveolar ducts o. conchae p. lower respiratory tract 1. _____ Connects the larynx to the lung; also called the windpipe 2. _____ Small air tube that has no cartilage in its walls, only smooth muscle 3. _____ Reduces the surface tension of the fluid in the alveoli 4. _____ Contains the vocal cords and the epiglottis 5. _____ Separates the air in the alveoli from the blood in the capillaries of the lung 6. _____ Serous membrane covering the lung and the inner chest wall 7. _____ Also called the throat 8. _____ First branch off the trachea in the lung 9. _____ Lines most of the air distribution tubes 10. _____ Air sacs in which oxygen and carbon dioxide are exchanged in the lung 11. _____ Structures in the nose that help warm and humidify the air 12. _____ Term used to describe the air distribution system 13. _____ Structures from which tears drain into the nasal cavity 14. _____ Microscopic tubes that end in the alveolar sacs 15. _____ Refers to the respiratory structures outside the thorax 16. _____ Refers to the respiratory structures within the thorax
The walls of the veins contain smooth muscle innervated by sympathetic nerve fibers. Sympathetic stimulation ____ venous pressure and drives ____ blood into the heart
a. increases, more. b. increases, less. c. decreases, more. d. decreases, less. e. none of these answers.
The serous fluid within the pericardial cavity works to
A. equalize the pressure in the great vessels. B. lubricate the membranes of the serous pericardium. C. slow the heart rate. D. eliminate blood pressure spikes.