Exam 4: Development

The letter C is pointing to the layer called the _____.

In the placenta, nutrients, gases, and wastes are exchanged between blood vessels of the chorionic villi and _____ of the maternal portion of the placenta.

The heart forms and begins to beat during the _____ month of embryonic development.

There is a three-day window during which a woman is most likely to become pregnant. It extends from two days before ovulation to one day after and occurs because

The _____ is a solid ball of cells resulting from cleavage.

What is the correct order of the events of true labor?

The normal site of fertilization is the:

The three primary germ layers develop from the _____ of the blastocyst.

Arrange the following in the correct order of heart development.

About 8 days after fertilization, the trophoblast develops into two layers in the region of contact between the blastocyst and endometrium. The layer known as the syncytiotrophoblast secretes enzymes that assist the embryo in penetrating the endometrium.

Each somite differentiates into three regions: a myotome, a dermatome, and a sclerotome. Which of the following statements is incorrect?

The _____ is the clear glycoprotein layer between the corona radiata and the oocyte's plasma membrane.

Sperm must undergo _____ in the female reproductive tract in order to be attracted by and respond to chemical factors produced by the surrounding cells of the ovulated oocyte.

Letter _____ is pointing to the structure where the secondary oocyte is typically fertilized by the sperm.

After the _____ month of development, the embryo is referred to as a fetus.