The tissue that covers the body surface, body cavities, and organ surfaces is the ________ tissue.
A. epithelial
B. connective
C. nerve
D. muscle
Answer: A
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In its protective role, the blood-brain barrier becomes an obstacle in delivering therapeutic drugs to specific regions of the brain in the treatment of a variety of brain disorders
Describe what the blood-brain barrier is made of, and how different compounds are capable of crossing it.
Congenital hemolytic anemia is
A. when destruction of erythrocytes is more rapid than normal. B. when there is an inherited anemia associated with a defect in iron uptake. C. caused by a failure of the body to absorb Vitamin B12. D. characterized by a large number of immature, nucleated cells. E. characterized by significantly decreased formation of erythrocytes and hemoglobin due to defective red bone marrow.
The countercurrent mechanism in the nephron
A) creates a highly concentrated interstitial fluid so that urine can be concentrated by the collecting ducts when they are permeable to water. B) keeps interstitial fluid hydrated to maintain blood pressure. C) is a method to move sodium to control its concentration. D) keeps the volume of water lost in the urine relatively constant.
Which of the following is NOT part of the female's external genitalia?
A) clitoris B) vagina C) labia minora D) mons pubis