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Gaby
Fertilization and Development
| Question | Answer |
|---|---|
| What are the stages of early development? | Implantation, Gastrulation, Neurulation |
| What is a fertilized egg called? | Zygote |
| The result of gastrulation is the formation of three cell layers. What are the names of the three layers? | Ectoderm, Mesoderm, Endoderm |
| What is followed by neurulation? | Gastrulation |
| What is the name of the fingerlike projections that form on the outer surface of the chorion and extends into the uterine lining? | Chorionic Villi |
| The placenta is the embryo's organ of _____ ,_____ ,and _____. | respiration, nourishment, excretion |
| After eight weeks what is the embryo called? | fetus |
| The umbilical cord connects the embryo to the __________. | placenta |
| Contractions force the baby out through the _____. | vagina |
| __________ begins with puberty, and ends with adulthood. | Adolescence |
| Adults reach their highest levels of physical strength, and development between the ages of __, and__. | 25 35 |
| The development of the nervous systems is called ___________. | Neurulation |
| A cluster of cells known as the inner cell mass develops within the inner cavity of the ____. | Blastocyst |
| _______ (develops into the skin and nervous system) | Ectoderm |
| __________ (forms the digestive lining and organs) | Endoderm |
| _________(cells differentiate into internal tissues and organs) | Mesoderm |
| As the notochord develops the neural groove changes ____, producing neural folds. | shape |
| When a sperm attaches to a binding site, it's head releases _______ that break down the protective layer of the egg. | enzymes |
| A _______ cell has a set of chromosomes from each parent cell. | diploid |
| What is differentiation responsible for? | the development of the various types of tissues in the body |
| Blastocyst cells specialize due to the activation of _____. | genes |
| The placenta acts as a barrier to some harmful or ______ causing agents | disease |
| ____, _____,and medications penetrate the placenta and affect the development. | Drugs alcohol |
| The inner cell mass contains_____ stem cells. | embryonic |
| The mother's posterior pituitary gland releases the hormone _____ which affects involuntary muscles in the uterine wall. | oxytocin |
Created by:
Gavina05
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