Projections of loose connective tissue from the dermis, which extend upward between the adjacent ridges of the epidermis, are called
A) epidermal ridges.
B) strata.
C) reticular layers.
D) accessory structures.
E) dermal papillae.
E) dermal papillae.
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The low-resistance pathway that permits electrical activity pass from cell-to-cell in myocardial tissue is the
a. desmosome. b. septum. c. gap junction. d. T-tubule. e. sarcoplasmic reticulum.
When NaCl is added to body fluids, it results in the addition of
A. one solute particle per NaCl molecule and exerts an osmotic pressure equivalent to that of a nonelectrolyte. B. two solute particles per NaCl molecule and exerts twice the osmotic pressure of the same number of nonelectrolyte molecules. C. three solute particles per NaCl molecule and exerts one-third the osmotic pressure of the same number of nonelectrolyte molecules. D. one solute particle per NaCl molecule, but because it is uncharged it does not result in osmotic pressure.
What is the longest vein commonly used in grafts in coronary bypass surgery?
A. Inferior vena cava B. Femoral vein C. Deep femoral vein D. Great saphenous vein E. Common iliac vein
What occurs during the time between the first heart sound and the second heart sound?
A. ventricular systole
B. ventricular diastole
C. ventricular filling
D. atrial systole
E. the P wave of the ECG