quiz 7

Question 1

define
placentation

implantation

Answer 1

placentation- attachment of the placenta to the endometrium of the uterus. The chorion is the fetal attachment layer

implantation- the burying of the conceptus into the endometrium

Question 2

both the sow and the mare have a _________ type of placenta based on the distribution of the chorionic villi. The structures distributed from the fetal side are called _______________________.

Answer 2

diffuse

choronic villi????????

Question 3

women and primates have a ______________- type of placenta based on the shape or distribution of chorionic villi

Answer 3

discoid

Question 4

dogs have a __________ type of placenta based on the shape of distribution of chorionic villi

Answer 4

zonary

Question 5

ruminants have a cotyledonary distribution of chorionic villa for their classification of placenta. The fetal components is called ______________. when the fetal and maternal components fuse they form the structure known as a _______________

Answer 5

caruncles
cotyledon
placentome

Question 6

binucleate giant cells are unique to the _______________ placenta. List three products produced by these cells

Answer 6

ruminant

??????

Question 7

Placental lactogen is a hormone secreted by the placeta in most species. Name one species that does not produce this placental hormone _____________. This hormone is ______________ as it stimulates mammary gland function as well as ______________________, as it promotes growth of the fetus

Answer 7

mare

lactotrophic

somatrophic??????

Question 8

which embryonic layer does the repro tract develop from

Answer 8

mesoderm

Question 9

what trimester does defeminization of the brain occur

Answer 9

first

Question 10

name three structures that are important in the embryonic blood flow that do not allow blood to pass throught he liver or the lungs

Answer 10

ductus venosus
ductus arteriosus
foramen ovales

Question 11

what are the 6 layers that make up the epitheliochorial placenta

Answer 11

endometrial edothelium 
endometrial interstitum 
endometrial epithelium
chorionic epithelium 
chorionic interstitum 
chorionic endothelium