Flashcards in Prenatal Development Deck (66)
Average weight gain during pregnancy:
pregnancy produced hypertension
Peeclampsia SandS (5)
- Significant change in BP after 24wk marker
- Sudden increase/change in edema
- excessive weight gain (beyond 35 lbs)
- Visual disturbances
Each egg and sperm has _#_ chromosomes.
A person's 46 chromosomes have about _#_ genes.
The first 22 pairs of chromosomes are called _____.
The 23rd pair of chromosomes are _____ chromosomes.
The functional units of heredity; they determine the production of chemical substance that are the foundation for characteristics and abilities
_____ regulate the development of all human characteristics and abilities
the complete set of genes that make up a person's heredity
features that are produced from the interaction between genes and the environment
genotypes produce ______. If the alleles are the same they typically produce that ______. If they are different, depends on dominant or recessive alleles
If 2 alleles for disease are present, the child is ____ ____ to develop the disease.
When the ____/____ have more or less than 23 chromosomes, the individual does not receive 46 chromosomes.
Abnormal ______ chromosome pairings can also disrupt development
traits that are controlled by a single gene
Many separate genes influence behavioral and psychological characteristics
Studies use twins and adopted children to better understand ____ ____.
_____ influences typically make children within a family different.
prenatal development lasts on average __#__ weeks.
Prenatal development begins when:
sperm successfully fertilizes an egg
The 3 stages of prenatal development are:
1st trimester is week _#_ to week _#_
week 1 - week 12
2nd trimester is week _#_ to week _#_
week 13 - week 27
3rd trimester is week _#_ to week _#_
week 28 - birth
Stage where there is a newly fertilized egg. 2 individual sets of 23 chromosomes are interchanged, one from each parent
Zygote stage's time frame ranges:
from conception to early implantation (week 1 and 2)
Stage where development includes:
- umbilical cord
- eyes, arms and legs
- brain and nervous system
- heart starts to beat around 4 weeks
during the _____ stage, blood vessels allow exchange of nutrients, oxygen, vitamins, and waste products through the umbilical cord