Dev. Psych. Flashcards
First phase; last from conception through implantation—developing zygote becomes firmly attached to the wall uterus; 10-14 days
Period of Zygote
It is a ball-like structure formed when all resulting cells continue to divide, containing 60-80 cells within 4 days of conception.
Blastocyst
What is the inner layer of blastocyst?
Embryo
What is the outer layer of blastocyst?
Tissues—to protect & nourish the embryo
4 (membranes) major support structured formed by the blastocyst’s outer layer to protect & nourish the developing organism.
- Amnion
- Yolk sac
- Chorion
- Allantois
One membrane; watertight sac that fills with fluid from the pregnant woman’s tissues; to cushion the developing organism; regulates temperature; easier for embryo to move
Amnion; amniotic fluid
Second membrane; produced blood cells until the embryo is capable of producting its own.
Yolk sac
Third membrane; surrounds amnion & eventually becomes the lining of placenta—multi-purpose organ
Chorion
Fourth membrane; forms the embryo’s umbilical cord
Allantois
Second phase of prenatal development; lasts from beg. of 3rd week through the end of 8th week; all major organs are formed; heart begins to beat
Period of embryo
Three cell layers formed by emryonic disk:
- Ectoderm - outer layer; nervous system; skin; hair
- Mesoderm - middle layer; muscles; bones; circulatory system
- Endoderm - inner layer; digestive system; lungs; urinary track; pancreas; liver
Formed by emryonic disk; outer layer; nervous system; skin; hair
Ectoderm
Formed by emryonic disk; middle layer; muscles; bones; circulatory system
Mesoderm
Formed by emryonic disk; inner layer; digestive system; lungs; urinary track; pancreas; liver
Endoderm
Third phase; lasts from 9th week until birth; all major organ systems begin to function & dev. organism grows rapidly
Period of fetus
The phase where development of unique characteristics—diff. patterns of movement & facial expressions happen; digestive and excretory systems working together
Period of fetus
It is a male sex hormone responsible foe dev. of penis & and scrotum, and it is what testes secretes.
Testosterone
A white, cheesy substance that covers the fetus to protect fetal skin against chopping during its long exposure to amniotic liquid.
Vernix
It is a fine layer of hair that helps vernix stick to the skin.
Lanugo
It happens when one egg cell/ovum further divides into two after being fertilized by one sperm—same genetic constitutions; same sex & similar looks
Identical/Monozygotic twins
Arise from two eggs/ova that are fertilized by 2 diff. sperm cells.
Non-identical/fraternal/dizygotic twins
(2) Multiple births:
- Identical/Monozygotic twins
- Non-identical/fraternal/dizygotic twins
(5) Types of birth:
- Natural/spontaneous birth
- Instrument birth
- Breech birth
- Transerve presentation birth
- Cesarean-section birth
A type of birth where the head emerges first.
Natural/spontaneous birth
A type of birth that is employed when fetus is too large or its position does now allow normal birth.
Instrument birth
A type of birth wherein the fetal buttocs of fetus appear first.
Breech birth
A type of birth wherein the fetus lies crosswise on the mother’s uterus.
Tranverse presentation birth
A type of birth wherein the fetus is delivered surgically by means of slit.
Cesarean-section birth
It is a phase wherein the cervix dilates from 4 to 8 cm.
Active phase
It is a phase wherein the cervix dilates from 8 to 10 centimeters.
Transition phase
Three process of birth:
- Contractions the dilate cervix;
- Baby’s delivery;
- Afterbirth
A test used to assess newborn’s condition immediately after birth.
Apgar test
It is administered a few days later—more extensive measure of the baby’s health and well-being.
Neonatal Behavioral Assessment Scale (NBAS)
It is a potentially serious birth complication that can cause brain damage and other defects.
Anoxia