The function of the pericardial fluid is to
A. provide oxygen and nutrients to the endocardium.
B. stimulate the heart.
C. replace any blood that is lost.
D. lubricate the heart valves.
E. reduce friction between the pericardial membranes.
Answer: E
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Valves in veins
A. make the use of a skeletal muscle pump unnecessary for venous blood flow. B. are the leading cause of high blood pressure. C. are found only in the largest veins. D. cause venous blood flow to go in only one direction. E. are formed of the tunica media.
A heart rate of 125 beats per minute could be correctly termed
A) fibrillation. B) a normal resting heart rate. C) tachycardia. D) an arrhythmia. E) bradycardia.
The vagus nerve and 31 pairs of spinal nerves are part of the CNS
Indicate whether the statement is true or false
A person with damage to the left cerebral hemisphere could have several speaking problems, but yet have no problems with singing.
Answer the following statement true (T) or false (F)