A chambered muscular organ that lies within the thoracic cavity is called the:
A. Lung.
B. Liver.
C. Heart.
D. Kidney
Answer: C. Heart
The heart consists of four chambers: the atria (top two chambers) and the ventricles (bottom two chambers). The heart has only one purpose: pumping blood to the body. If that single purpose is interrupted, even momentarily, cardiac arrest ensues and the chance of survival can be slim.
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Which of the following is NOT a common IV drip rate encountered in the pharmacy setting?
A) 60 gtts/mL B) 20 gtts/mL C) 10 gtts/mL D) 5 gtts/mL
Under normal circumstances, a small amount of fluid is filtered from the capillary in excess of that which is absorbed. What prevents edema from occurring under these conditions?
a. The lymphatic system absorbs it and re-turns it to the circulatory system. b. Tissue cells absorb this fluid and use it in the metabolic process. c. Wandering macrophages use this excess fluid in hydrolyzing invaders. d. Waste products dilute this, maintaining eutonic conditions.