After her last check-up, Harriet was informed that her active Vitamin D levels were low. Which of the following conditions may explain why this is so?
A. Melanin production has increased due to sun exposure, reducing Vitamin D activation.
B. An increase in Vitamin D absorption at the intestines has overwhelmed the homeostasis of vitamin production at the kidneys.
C. Liver dysfunction has reduced the conversion of cholecalciferol to the intermediate for calcitriol production.
Answer: C
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The nerves going to the upper limbs join the spinal cord at the ________ region.
A. cervical B. thoracic C. lumbar D. sacral
Glomerulonephritis is inflammation of the
A. collecting ducts. B. peritubular capillaries. C. glomerular capsule. D. glomerular capillaries.
The vision association area resides primarily in the temporal lobe.
Answer the following statement true (T) or false (F)
Immune cells of the epidermis tend to be found in the stratum
A. spinosum. B. corneum. C. granulosum. D. basale. E. lucidum.