Select the best description of the negative selection process of lymphocyte maturation
A) removal of lymphocytes that fail to recognize "self" cells
B) teaching a lymphocyte to recognize "self" from foreign antigens
C) removal of lymphocytes that react with "self" cells
D) allowing the survival of lymphocytes that cannot bind to MHC proteins
C
You might also like to view...
When testing the biceps reflex, what is the proper area to tap with the reflex hammer?
A. The biceps brachii tendon in the bend of the elbow B. Anywhere on the biceps brachii muscle C. In the middle of the biceps brachii muscle D. On one of the biceps tendons in the shoulder area E. On the tendon of the triceps brachii muscle in the elbow
If carbon dioxide levels rise in the body, negative feedback mechanisms will trigger
A. an increase in breathing so that carbon dioxide levels decline to the set point. B. a decrease in breathing so that carbon dioxide levels decline below set point. C. a decrease in breathing so that carbon dioxide levels rise to the set point. D. an increase in breathing so that carbon dioxide levels rise further above set point.
The smallest living unit of structure is considered to be at the:
a. chemical level b. cellular level c. organ level d. tissue level
The parasympathetic nervous system is especially active during which physiological state(s)?
A) exertion B) trauma C) digestion D) stress E) All of the answers are correct.