Genetics & Conception
Fertilization usually occurs in the _____.
Fallopian tube
Which hormone is detected by pregnancy tests?
HcG
Which trimester is most critical for organ development?
First Trimester
At about what week can the mother feel fetal movement?
20ish Weeks
Blood volume increases by about __% during pregnancy.
30-50%
What is the probability of a child with blue eyes if both parents are Bb?
25%
Which hormone relaxes ligaments and joints during pregnancy?
Relaxin
What is the role of the placenta in gas exchange?
Transfers O₂ to fetus, removes CO₂
At what week is a fetus considered viable outside the womb?
22-24 Weeks
Which hormone causes morning sickness in early pregnancy?
hCG/Estrogen
What reaction prevents multiple sperm from entering one egg?
Cortical reaction / zona pellucida block
Which hormone maintains the uterine lining early in pregnancy?
Progesterone
Why do pregnant people often experience heartburn?
Progesterone relaxes sphincter + uterus presses on stomach
By 36 weeks, which organ system is almost fully mature?
Respiratory/Lungs
Why do pregnant people often experience ankle swelling?
Increased blood volume + fluid retention