Mrs. Untz, an 80-year-old female, presents with a low glomerular filtration rate (GFR) and has been producing less than 500 mL of urine during a 24-hour period. Why do you think her blood report shows a high level of creatinine and what does it indicate
about her kidney function?
What will be an ideal response?
Creatinine is a waste product of the creatine kinase reaction that occurs in muscle cells. Creatinine is both filtered and secreted into the filtrate to leave the body with the urine. Nearly all of the creatinine produced is excreted by the kidneys. When kidney function is impaired, as may be the case for Mrs. Untz, creatinine levels in the blood rise as it is not being properly cleared by the kidney.
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Stephanie is in a car accident, flung from her vehicle and landing on her back on
pavement. At the scene, an emergency medical technician checks her Babinski reflex, in which the great toe extends upward and the smaller toes fan apart. This reflex A) may indicate an injury to the corticospinal tract. B) is meaningless in assessing an emergency situation. C) is normal in adults. D) may indicate aging of the corticospinal tract.
Memories are formed by neural pathways of modified synapses.
Answer the following statement true (T) or false (F)
Calcium's roles in the body include
A. bone health. B. muscle contraction. C. action potentials in heart muscle. D. blood clotting. E. All of the choices are correct.
Where is most of the body's water found?
A. In the lymph B. In the blood C. Outside the cells (tissue fluid) D. Inside the cells (intracellular)