Eighty to ninety percent of testicular mass consists of ____
a. sertoli cells c. testicular muscle
b. seminiferous tubules d. testosterone
ANS: B
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One of the reasons that mixed-methods approaches are becoming more popular in family research is because ______.
A. they are much simpler to use B. researchers rarely use single methods approaches anymore C. family forms are becoming more diverse D. they have always been used in research on families
The stage of syphilis for which there may be no symptoms at all (for several years) is _____ syphilis.
A. latent B. late C. secondary-stage D. primary-stage
Pubic lice may be transmitted through _____.
A. blood transfusion B. intravenous drug use C. protozoan carriers D. toilet seats
Which of the following is true of multiple orgasms in men?
A. Not all men are able to ejaculate with each orgasm they experience in the sequence. B. All men are physiologically incapable of achieving more than one orgasm during intercourse. C. Men are capable of achieving multiple orgasms only if they are born with the ability. D. Men are capable of achieving multiple orgasms only after a surgical alteration of their testes.