Embryonic Development

Implantation is usually completed after

The amnion has formed

Gastrulation has occured

The nervous system forms

After fertilization the zygote goes through a rapid period of cell called

Blastulation

Cleavage

Organogenesis

The process that transforms the embryo into three layered stage is called

Gastrulation

Cleavage

Blastulation

Organogenesis

Which of the following is the formed from ectodermal tissue?

Brain

Bones

Muscles

Skeleton

Which of these is not the function of the placenta?

Nutrient transfer

Urine formation

Respiratory gas transfer

Hormone production

Which frequence shows the correct order of the stages of labor?

Expulsion, placenta,dilation

Placenta, dilation,expulsion

Expulsion,dilation,placenta

Dilation,expulsion,placenta

Prolactin causes

Milk production by breast tissue

Uterine contractions only

Increased HCG excretion during the first month of pregnancy

Which of the following is not a function of trophoblast cells?

They secrete hcg

They take part in placental formation

The inner layers of trophoblasts lose their plasmic membranes and invade the endometrium

They display l section molecules on their surface after blastocyst hatching.

The cells at one end of the blastula

Move inward

Move forward

Move outward

Stay the same way

Which one of these layer(s) is produced in the gastrulation cycle?

Endoderm

Ectoderm

Mesoderm

All the above

Morula is a

Solid ball of cell

Single layer of cells

Blastula

Blastocyst

The new cell produced after fertilization is called a

Spermatic cell

Clone

Ovum

Zygote

When the cells in the morula change positions and create a fluid-filled cavity

Morula

Blastocyst

Gastrulation

Ovulation

Embryonic Development

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