Myelin is a lipid insulation produced by the ________
A) Oligodendrocytes B) Ependymal cells
C) Astrocytes D) Microglia
A
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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?
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
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