Primary amenorrhea occurs if menses have not occurred by age:
A) 12.
B) 15.
C) 18.
D) 21.
C
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Immunological tolerance
a. is a state of unresponsiveness specific for a particular antigen b. occurs when a group of proteins belonging to the adhesins family turns off the response c. is caused by T cells that express both CD4 and CD8 molecules d. is caused by T cells that express neither the CD4 nor the CD8 molecule
The plural form of testes is testis
Indicate whether the statement is true or false
Rubbing your eye to remove dirt may injure the:
A) sclera. B) eye socket. C) conjunctiva. D) cornea.
Which of the following is not part of the oxygen deficit?
a. a lag in oxygen metabolism compared to energy requirements b. a higher reliance of anaerobic rather than aerobic metabolism c. an increase in lactate production d. none of the choices (all are part of the oxygen deficit)