The purpose of the four valves of the heart is to ____.
A. control the rate of blood flow
B. ensure one-way blood flow
C. keep the blood in the correct chamber
D. maintain blood pressure
E. generate rhythmic contractions
B. ensure one-way blood flow
The four heart valves keep blood flowing in one direction.
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Which rate is a ratio of the total number of neonatal deaths to the total number of neonatal discharges, including deaths?
A. Net death rate B. Neonatal death rate C. Gross death rate D. Newborn death rate
The job analysis process is very important to the success of the fire department and, if it is not performed properly, which of the following may result?
A) Increased legal liability in the testing process for firefighters B) Difficulty in justifying pay increases C) Inability to define the duties and skills needed to perform the job D) All of the above
What is another name for baroreceptors?
a. chemoreceptors c. proprioceptors b. juxtacapillary receptors d. pressoreceptors
A 49-year-old man has been stabbed in the lower right chest. Police on scene report that the patient got into an argument with an unidentified man, who then stabbed him before fleeing the scene. After assessing the patient, you are suspicious that the knife punctured the lung and is causing internal bleeding. In this situation, the mechanism of injury would be:
A) blunt trauma to the lungs. B) assailant with a knife. C) internal hemorrhage. D) stab wound to the right chest.