A patient scheduled for valve replacement surgery is reviewing the cardiac cycle. Which valve is forced open to move oxygenated blood through the general circulation?
A. Mitral
B. Aortic
C. Tricuspid
D. Pulmonary
Answer: B
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Which of the following statements about the trachea is false?
A) It is lined by pseudostratified ciliated columnar epithelium. B) Tracheal cartilages prevent tracheal collapse. C) It contains many mucous glands. D) It alters its diameter in response to the autonomic nervous system. E) It is completely wrapped in smooth muscle.
No visible cytoplasmic granules are present in ________
A) eosinophils B) neutrophils C) basophils D) monocytes
Which mineral is correctly matched to its function?
A. Chromium - component of thyroid hormone B. Magnesium - protects plasma membrane from oxidative changes C. Zinc - needed for wound healing and prevention of anemia D. Phosphorus - associates with vitamin E to help make gastric juice
This bacteria releases a toxin that causes tetanus.
A. Meningitis B. E. coli C. Staphylococcus aureus D. Clostridium tetani