Which of the following layers of the alimentary canal wall has blood vessels that carry nutrients away?
A. mucosa
B. submucosa
C. muscular layer
D. serosa
B. submucosa
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Which of the following occurs during depolarization of a cardiac cell?
A) Sodium moves out of the cell. B) The cell becomes relatively more positively charged. C) Potassium moves into the cell. D) The cell becomes negatively charged.
A patient fell and sustained an open fracture of the left humerus. Assessment reveals that the bone has pulled back into the arm. Bleeding from the site is controlled. For which of the following reasons would splinting the left arm benefit this patient?
a. A splint decreases the likelihood of further injury to nerves and blood vessels. b. A splint starts the process of healing by aligning and connecting the bone ends. c. A splint eliminates the possibility of infection through the open wound. d. A splint converts the open fracture to a closed fracture.
Medical necessity of E/M services is based on all of the following factors EXCEPT the:
A) acuity and severity of the problems addressed. B) complexity of documented comorbidities. C) physical scope encompassed by the problems. D) procedures performed to address the problem.
Which of the following statements about conjunctivitis is not true?
A. It is a condition in which fluid pressure builds up inside the eye. B. Standard Precautions should be used when working with a patient with conjunctivitis. C. Excessive glare can cause conjunctivitis. D. When caused by a virus, conjunctivitis produces a watery discharge from the eye. E. When caused by bacteria, conjunctivitis may produce pus that may form a crust.