A male patient complains of physical weakness and fatigue. A blood test shows his hematocrit to be 30%. Which of the following diagnoses is the least likely to explain his symptoms?
A. Dietary iron deficiency
B. Dietary vitamin B12 deficiency
C. Internal bleeding
D. Kidney disease
E. Lung disease
Answer: E
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Prolonged aldosterone stimulation of the distal convoluted tubule may result in
A) hypercalcemia. B) hypocalcemia. C) hypokalemia. D) hyperkalemia. E) alkalosis.
Which is not true about synovial joints?
A. All articulating bone surfaces are covered with articular cartilage. B. Synovial joints are enclosed by fibrous articular capsules. C. Synovial fluid is secreted by the synovial membrane. D. Ligaments strengthen and reinforce joints. E. Blood circulates within the joint cavity to nourish the articular cartilage.
Mercury is used to measure blood pressure because it is ________ compared to other liquids.
A. more dense B. less dense C. warmer D. lighter in color E. darker in color
The viscosity of blood is due more to the presence of __________ than to any other factor.
A. fibrin B. albumin C. sodium D. erythrocytes E. nitrogenous wastes