The hydrostatic pressure in a capillary in skeletal muscle is 37 mmHg at the arteriolar end and 14 mmHg at the venular end. The interstitial fluid hydrostatic pressure is 0 mmHg. The colloid osmotic pressure is 25 mmHg in the capillary and 1 mmHg in the interstitium. The net force producing fluid movement across the capillary wall at its arteriolar end is:
A. 13 mmHg out of the capillary
B. 13 mmHg into the capillary
C. 3 mmHg out of the capillary
D. 11 mmHg out of the capillary
E. 3 mmHg into the capillary
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The physiological function of the relatively slow conduction through the AV node is to allow sufficient time for:
A. filling of the ventricles
B. runoff of blood from the aorta to the arteries
C. repolarization of ventricles
D. venous return to the atria
E. contraction of ventricles
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