The U-shaped structure in the renal tubule is known as the ____
a. distal convoluted tubule
b. glomerulus
c. loop of Henle
d. proximal convoluted tubule
Answer: c. loop of Henle
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In the pumping action of the heart:
a. atrial systole follows ventricular systole b. atrial systole precedes ventricular systole c. atrial and ventricular systole occur at the same time d. none of the above
In the last step of blood coagulation,
a. fibrin is converted to fibrinogen b. fibrinogen is converted to fibrin c. platelet factor enters numerous reactions d. prothrombin is converted to thrombin e. thrombin is converted to prothrombin
As blood flows away from the heart, how does overall blood pressure in vessels change? Why?
A. Blood pressure decreases, because of the effects of friction between the vessel walls and the moving blood. B. Blood pressure increases. Otherwise the blood would not flow up toward the heart. C. Blood pressure increases, because vessel diameter narrows with distance from the heart, which increases the force on the blood. D. Blood pressure decreases, because blood vessels are passive and cannot exert any force on the moving blood.
Define somatotopy
A) a functional map of spinothalamic tracts B) a functional map of spinocerebellar tracts C) a functional map of corticospinal tracts D) a functional map of the somatosensory cortex E) a functional map of the motor cortex