Exam 20: Development

The solid ball of blastomeres that is the result of cleavage is a(n)

Assume that eye color is an autosomal trait and that brown eye color is dominant over blue eye color.If one parent is homozygous for brown eyes and the other parent is homozygous for blue eyes,then

All of the following are characteristic of the onset of true labor EXCEPT

The hormone secreted by the trophoblast cells is

The single cell that is the result of fertilization is a(n)

The circulatory changes that occur shortly after birth send

During pregnancy,milk production is inhibited by

Two external features unique to the fetus are

The amnion,chorion,and placenta form during the preimplantation period.

The period of development before birth is called _____ development.

The cells that give rise to the primary germ layers are the

The period during which language,reading,writing,and other intellectual skills develop is

The normal stimulus for the baby to take its first deep breath is

The postnatal development period during which an individual learns to sit,walk,smile,and laugh is the _____ period.

Trophoblast cells secrete human chorionic gonadotropin,which has an action similar to luteinizing hormone.

All of the following are derived from mesoderm EXCEPT

What is the term for the yellowish fluid that is secreted by the mammary glands prior to milk production?

For fertilization to take place,sexual intercourse must occur approximately between 1 day before and 3 days after ovulation.

All of the following are characteristic of colostrum EXCEPT

What is the term for the period of prenatal development that lasts about 30 weeks?