What is the significance of a drug's therapeutic index to a veterinary technician?
What will be an ideal response?
The therapeutic index is used to describe the safety of a drug. The therapeutic index is determined by comparing the drug's lethal dose and its effective dose (LD50 /ED50). Drugs with a large therapeutic index tend to be safer than drugs with a small therapeutic index. Drugs with a small therapeutic index that are administered to animals should be monitored closely for any signs of toxic side effects. This increased level of monitoring may include performing additional blood tests or diagnostic procedures or observing physical signs like vomiting and diarrhea.
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The "cleanup" cells are located in the ________ layer of alveolar membrane.
A. surfactant B. epithelial C. interstitial space D. capillary endothelium
The percent of hemoglobin saturation decreases as
a. increases b. increases c. H+ decreases d. body temperature decreases e. blood pH decreases
Which of the following is not a function of smooth muscle tissue
A) Altering the diameter of the respiratory passageway B) Elevating hairs on the arm C) Forcing blood from the heart into the major arteries D) Moving food materials along the digestive tract E) Forcing urine out of the urinary tract
During development, the midgut artery appears to be markedly narrowed at its origin. Which of the following structures is derived from the midgut and may receive inadequate blood supply?
(A) Gallbladder (B) Stomach (C) Descending colon (D) Ascending colon (E) Rectum