Shared Flashcard Set

Details

Growth and Development
Babies
18
Anatomy
Undergraduate 1
05/03/2012

Additional Anatomy Flashcards

 


 

Cards

Term
Fetal blood
Definition
Has greater oxygen-carrying capacity than adult blood
Term
Umbilical vein
Definition
Carries nutrient-rich, oxygenated blood from the placenta to the fetus
Term
Ductus venosus
Definition
Conducts about half the blood from the umbilical vein directly to the inferior vena cava, bypassing the liver
Term
Foramen ovale
Definition
Conveys a large proportion of the blood entering the right atrium from the inferior vena cava, through the atrial septum, and into the left atrium, bypassing the lungs
Term
Ductus arteriosus
Definition
Conducts some blood from the pulmonary trunk to the aorta, bypassing the lungs
Term
Umbilical arteries
Definition
Carry the blood containing carbon dioxide and wastes from the internal iliac arteries to the placenta
Term
Morula
Definition
The cleavage embryo when the cell/blastomere count reaches 16
Term
Blastocyst
Definition
A hollowed out morula with no zona pellucida
Term
Zona Pellucida
Definition
Proteolytic enzymes that digest part of the endometrium
Term
Trophoblast
Definition
The two layers of trophoblast become part of the chorion as they undergo further growth
Term
Syncytiotrophoblast
Definition
no distinct cell boundaries
Term
Cytotrophoblast
Definition
distinct cell boundaries
Term
Embryonic disc
Definition
Hypoblast and Epiblast
Term
Hypoblast
Definition
Migrating cells from the hypoblasts becomes the wall of the yolk sac. The yolk sac will provide nutrients to the embryo during the 2-3 weeks of development.
Term
Epiblast
Definition
A small cavity appears and enlarges to form the amniotic cavity. Forms the roof of the disc, then surrounds the embryo.
Term
Ectoderm
Definition
Gives rise to nervous system and epidermis
Term
Mesoderm
Definition
Gives rise to connective tissues, muscle, and bone
Term
Endoderm
Definition
Gives rise to gastrointestinal tract, urinary bladder and urethra, and respiratory tract (luminal structures)
Supporting users have an ad free experience!