By 40 days after conception,swellings are clearly visible at the anterior end of the neural tube.There are
A) 2.
B) 3.
C) 4.
D) 32.
E) 64.

Question

Quizplus · Accepted Answer

At 40 days after conception, three swellings are clearly visible at the anterior end of the neural tube. These three swellings are known as the primary brain vesicles and will eventually give rise to the different regions of the brain. Therefore, choice B is the best answer.

By 40 Days After Conception,swellings Are Clearly Visible at the Anterior