Homeostasis of the hydrogen ion concentration in body fluids depends on the ratio of carbonic acid to bicarbonate in the extracellular fluid. What is this ratio?
a. 1:5
b. 1:10
c. 1:15
d. 1:20
ANS: D
The ratio needed for homeostasis is 1 part carbonic acid to 20 parts bicarbonate.
You might also like to view...
An epidemiologist is conducting a program of research aimed at identifying factors associated with incidence and prevalence of congenital cardiac defects in infants. The researcher has recruited a large number of mothers whose infants were born with cardiac defects as well as mothers whose infants were born with healthy hearts. The researcher is comparing the nutritional habits of all the mothers while their babies were in utero. Which of the following types of study is the epidemiologist most likely conducting?
A) Cohort study B) Cross-sectional study C) Case-control study D) Risk factor study
Three members of the therapy group share covert glances as other members of the group bring up
problems. One of them often makes a statement that subtly puts down another speaker or takes exception to a comment by the group leader. The others then nod in agreement. The group leader should suspect the occurrence of a. cohesiveness. b. confrontation. c. subgrouping. d. countertransference.
The nurse explains that when the kidney suffers an autoimmune inflammatory reaction, the glomeruli lose their ability to function effectively, which leads to:
a. glomerulonephritis. b. reduced urinary output. c. nephrosis. d. nephrotoxicity.
The strategy for generating meaning from qualitative data that involves identifying general themes to determine which go together is
a. factoring. b. clustering. c. partitioning. d. counting.