By 40 days after conception, swellings are clearly visible at the anterior end of the neural tube. There are

When a researcher interviewed both a Scotsman and a Bantu herdsman about the particulars of a cattle transaction, the Scot ________, whereas the Bantu herdsman ________

a. consulted his notes; recalled details from memory b. guessed; said that he couldn't remember c. remembered the faces of the traders; remembered the color of the cattle d. erroneously recalled that sheep were traded; accurately recalled that oxen and cattle were traded

Marcus is able to achieve an erection by either masturbation or manual stimulation by his partner. He has no difficulty ejaculating when he masturbates, but he cannot ejaculate during intercourse. Marcus would likely be diagnosed with

A) premature ejaculation. B) sexual arousal disorder. C) sexual aversion. D) orgasmic disorder.