Situation 14.1 is an example of
A) human reservoirs.
B) a zoonosis.
C) a nonliving reservoir.
D) a vector.
E) a focal infection.
B
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Answer the following statements true (T) or false (F)
1. In an open circulatory system, there is no difference between blood and interstitial fluid. 2. Relative to closed circulatory systems, Open Circulatory Systems pump hemolymph at relatively high pressure. 3. Blood is typically delivered to respiratory structures at low pressures in closed circulatory systems. 4. Frogs have two atria, but only a single ventricle.
All functions in the sponge (gas exchange, circulation, and excretion) are performed by diffusion except which of the following?
a. sensory function b. glandular secretion c. digestion d. camouflage
Which of the following substances is completely reabsorbed by the proximal convoluted tubules when it is at normal levels in the blood?
A. sodium B. potassium C. glucose D. water E. All of the above are completely reabsorbed by the proximal convoluted tubule.
A ________ layer consists of diffuse unorganized polysaccharide material that lies outside the cell wall and is easily removed.
Fill in the blank(s) with the appropriate word(s).