The anatomical arrangement of the kidney that allows transfer of solutes from one blood vessel to another is called the ________.
Fill in the blank(s) with the appropriate word(s).
countercurrent exchange system
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_______ generally causes relaxation of precapillary sphincters.
A. Low CO2 B. High O2 C. Lactic acid D. Two of the above
Which of the following would you expect to have the least effect on hematocrit percentage?
A) prolonged or excessive fever B) living at higher altitude C) dehydration D) injection with erythropoietin (EPO)
The ossicles are
A. three small bones within each ear. B. three of the fourteen facial bones. C. six of the fourteen cranial bones. D. neck bones that articulate with the larynx (voice box).
The pericardium:
a. is a sac surrounding the heart b. has an outer layer called the parietal pericardium c. has an inner layer called the epicardium d. all of the above