Exam (elaborations)
HDFS 3050 Exam 1 Questions with Verified Answers
- Course
- Institution
HDFS 3050 Exam 1 Questions with Verified Answers
[Show more]
Content preview
HDFS 3050 Exam 1 Questions withVerified Answers
Gametes - Answer-Sex Cells
Egg/Ovum - Answer-Female sex cell
1-2 Million eggs are made even before birth
400,000 survive to puberty
Every 28 days 1 egg is released
Sperm - Answer-Male sex cell
300-400 million sex cells made everyday
Travel through Cervix to uterus
500 survive to uterus
Fertilization - Answer-The union of egg and a sperm
Bind to egg cell
Egg will open one spot to let one sperm in
Zygote - Answer-Formed with after fertilization
Twinning - Answer-Happens in about 1 in 80 pregnancies
Dizygotic (DZ) or fraternal twins - Answer-Two ovam are fertilized and two different
zygotes are developed
3/4 of twins are DZ
Monozygotic (MZ) or identical twins - Answer-The fertilized zygote divides and splits into
two separate zygotes
Full Term (Gestation) - Answer-38 weeks
3 stages of prenatal Development - Answer-The Germinal/Zygotic Stage
The Embryonic Stage
The Fetal Stage
The Zygotic Stage - Answer-Timeline: Conception to 2 weeks
Zygote=fertilized egg
When the zygote reaches the uterine wall
After 36 hours the zygote starts to divide cells
The Umbilical cord forms
Umbilical Cord - Answer-Carries Nutrients
Exchange of Waste
, Delivers Blood and Oxygen
The Embryonic Stage - Answer-Timeline: 2-12 weeks
Embryo=implanted zygote
Indistinguishable from other species
Internal organs are formed
Appendages (limbs) formed
Nervous and Circulatory Systems are organized
Beginning of Heart Beat - Answer-4 weeks
The Fetal Stage - Answer-Timeline: 12-38 weeks
Resembles a human
Senses are apparent
Lanugo (hair all over body)
1st Kick Felt and Gender Apparent - Answer-18 weeks
Weight at 24 Weeks - Answer-2 pounds
Age of Viability (earliest baby can be born) - Answer-28 weeks
When does baby rotate to prepare for birth - Answer-36 weeks
Does learning occur in the womb? - Answer-Yes, Babies prefer mothers voice, mothers
language, "accents", taste preferences
Why does prenatal learning occur? - Answer-Serve as an early attachment mechanism
Orient the baby to the postnatal environment
Effect of Teratogens When Pregnant - Answer-Environmental agents that can cause
damage to the developing embryo/fetus
Tobacco Effects - Answer--Early Birth
-SIDS
-Heart and lung defects
-Miscarriage
Mercury Effects - Answer--Brain, hearing and double vision
-Memory defects
-Attention
-Language and motor skills
Found in fish, old thermometers and metal
Lead Effects - Answer--Miscarriage
-Hypertensions
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lectknancy. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77858 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now