Myelin is a lipid insulation produced by the ________
A) Oligodendrocytes B) Ependymal cells
C) Astrocytes D) Microglia
A
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Which organ system is correctly aligned with its function?
A) Nervous system generates heat B) Lymphatic system maintains blood homeostasis C) Integumentary system forms a physical barrier D) Reproductive system produces blood cells
Briefly explain the difference between chronic and acute renal failure
A) Chronic renal failure is a sudden loss of renal function, whereas acute renal failure is a gradual loss of renal function. B) Chronic renal failure is a gradual loss of renal function, whereas acute renal failure is a sudden loss of renal function. C) Chronic renal failure is a sudden loss in the ability to concentrate urine, whereas acute renal failure is a gradual loss in the ability to concentrate urine. D) Chronic renal failure is a gradual loss in the ability to concentrate urine, whereas acute renal failure is a sudden loss in the ability to concentrate urine. E) Chronic renal failure is the gradual loss in the ability to reabsorb glucose, whereas acute renal failure is a sudden loss in the ability to reabsorb glucose.
The "calcium influx factor," or CIF, refers to a factor that:
A. is released by endothelial cells to promote contraction of adjacent smooth muscle B. facilitates Ca++ refilling of the SR by promoting localized Ca++ influx in the cell C. is necessary for activation of voltage-gated Ca++ channels in smooth muscle D. facilitates contraction of smooth muscle by elevating cytosolic Ca++ concentration E. promotes relaxation of smooth muscle by inducing Ca++ sparks
A patient was admitted for depression. What should the nurse explain to the patient regarding the role of serotonin and depression?
What will be an ideal response?