Which step(s) in the process of urine formation occur in the renal tubule?
A. Reabsorption only
B. Filtration, secretion, and reabsorption
C. Secretion only
D. Secretion and reabsorption only
E. Filtration only
Answer: D
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An adult patient is brought into the emergency room of a local hospital. The EMTs report the patient lost about 300 cc (cubic centimeters or milliliters) of blood. Is this life-threatening?
A. Yes; 300 cc represents about 1/6 of the body's total blood volume of 2 liters. B. No; most adults have 4-6 liters of blood, so a loss of 300 cc would not be life-threatening. C. Yes; 300 cc represents about 1/3 of the blood's volume. D. No; most adults have more than 7 liters of blood, so a loss of 300 cc would not be life-threatening.
In the systemic circuit, which of these best describes active hyperemia?
A. increased metabolic activity that results in vasoconstriction B. increased metabolic activity that results in vasodilation C. decreased blood flow to tissues that results in vasoconstriction D. decreased blood flow to tissues that results in vasodilation E. increased blood pressure that drives blood more rapidly through tissues
Injury to the reticular formation can result in which of the following?
A. Alzheimer disease B. Irreversible coma C. Hypertension D. Parkinson disease
Changes in the size of the uterus during pregnancy are due to
A. both hypertrophy and hyperplasia. B. hypertrophy but not hyperplasia. C. hyperplasia but not hypertrophy.