An incompetent pulmonary semilunar valve could result in less blood reaching the
A. aorta.
B. lungs.
C. right atrium.
D. heart muscle.
E. right ventricle.
Answer: B
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Answer the following statements true (T) or false (F)
1. Pancreatic beta cells release insulin. 2. Lack of production of insulin by the pancreatic alpha cells can cause diabetes mellitus. 3. An abnormally low level of insulin production may cause glycosuria. 4. The thymus gland is located in the neck and produces thymosin. 5. The placenta produces the substance that can be detected by home pregnancy tests.
The process in which lymphocytes that recognize self-antigens are prevented from being activated is ________.
A. clonal selection B. clonal anergy C. clonal deletion D. apoptosis
Which of these is most likely to result from contact between contaminated fingers and the nasal mucosa?
A. Asthma B. Acute bronchitis C. Acute rhinitis D. Apnea E. Adult respiratory distress syndrome
What is the function of Paneth cells of the small intestine?
A. Produce mucus B. Produce lysozyme and defensins C. Produce digestive enzymes D. Divide by mitosis to make new mucosa cells