Diffusion occurs between the maternal blood flowing through the ________ and fetal blood flowing through vessels within the chorionic villi.
Fill in the blank(s) with the appropriate word(s).
lacunae
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Ingestion of large amounts of K+ triggers reflexes to limit the amount of K+ reabsorbed by the cortical collecting ducts.
Answer the following statement true (T) or false (F)
Which of the following is the reason for aspirating the syringe prior to injection?
a. to remove air bubbles b. to not produce pain c. to make certain the syringe is not in a blood vessel d. all of the above
The rate of energy expenditure during sleep is 10% to 15% lower than the BMR, presumably because of the more complete muscle relaxation that occurs during the paradoxical stage of sleep
a. True b. False Indicate whether the statement is true or false
What is the primary method by which materials such as O2, CO2 and nutrients are exchanged between the blood and surrounding tissues?
a. passive diffusion of substances across the capillary wall down their concentration gradients. b. active transport of materials across the capillary wall. c. osmotic pressure drawing water and solutes out of the capillary, bringing these dissolved nutrients into contact with the tissue cells. d. processes of ultrafiltration and reabsorption. e. bulk flow.