The lowest amount of blood flow in solid tumors occurs because:
A) they are infected
B) they have metastasized to other organs
C) they are benign
D) there is a limitation of blood supply
D) there is a limitation of blood supply
The lowest amount of blood flow in solid tumors occurs because there is a limitation of blood supply. Low regional blood flow affects drug therapy in tumors and abscesses. When a tumor is sold, the lowest amount of blood flow is in the tumor's core. High drug levels, therefore, cannot reach the deeper parts of a tumor, making solid tumors highly resistance to drug therapy.
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Indicate whether the statement is true or false
Spina bifida is MOST accurately defined as:
A. congenital inflammation of the spinal cord, usually in the neck. B. a birth defect caused by incomplete closure of the spinal column. C. a birth defect in which the child is born without spinal vertebrae. D. chronic pressure on the brain caused by excess cerebrospinal fluid.