Autoantibodies are
A) produced by activated T cells.
B) produced during an allergic reaction.
C) directed against the body's own antigens.
D) the first step in immunological competence.
E) important in tissue rejection reactions.
C
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Which of the following is incorrect pertaining to the apex of the heart?
A) It is formed by the inferolateral part of the left ventricle. B) Typically it lies posterior to the left 5th intercostal space in adults. C) It underlies the site where the "heartbeat" may be auscultated on the thoracic wall. D) It is where the sounds of the mitral valve closure are maximal (apex beat). E) It is bisected by the coronary groove.
The additional oxygen required during the recovery period to restore the normal pre-exertion levels is called the
A) oxygen debt. B) refractory oxygen amount. C) anaerobic oxygen threshold. D) aerobic oxygen threshold. E) aerobic oxygen conversion.
How many neurons are used to connect the central nervous system to an effector in most autonomic nervous system pathways?
A. One B. Two C. Three D. Four
Which type of drug would be useful in dilating the pupils for an examination of the retina?
A) alpha-1 receptor inhibitor B) beta-3 receptor mimic C) beta-1 receptor mimic D) muscarinic receptor inhibitor