With which phase are the following associated: myosin releases thin filaments, muscle tension declines, and cytoplasmic calcium levels fall?
a. Excitation
b. Lag
c. Relaxation
d. Contraction
Ans: c. Relaxation
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On their way toward the liver, veins from the spleen, the lateral border of the stomach, and the pancreas fuse with the inferior mesenteric veins, forming the
A) gastric vein. B) splenic vein. C) superior mesenteric vein. D) cystic vein. E) hepatic vein.
In uncompensated respiratory acidosis, the ______
A) carbon dioxide level of the blood is normal B) carbon dioxide levels of the blood are elevated C) carbon dioxide levels of the blood are low D) pH of the blood is high
Which of the following statements concerning the dorsal and ventral respiratory groups is false?
A. There is cross communication between these two groups. B. These groups increase the number of action potentials to the respiratory muscles during inspiration. C. They are located in the reticular activating system. D. Two dorsal and two ventral respiratory groups make up the medullary respiratory center. E. These groups establish the basic rate and depth of breathing.
What is the term for painful or difficult urination?
A) renal calculi B) pyelonephritis C) oliguria D) dysuria E) anuria