Q19 - Reproduction in Eutherian Mammals

Question 1

What do the reproductive tracts of all female eutherian mammals have in common?

Answer 1

They all possess one vagina

Question 2

How are female eutherian mammal reproductive tracts classified?

Answer 2

Based on the number and structure of cervix and uteri

Question 3

What are the four uterine types in eutherian mammals?

Answer 3

Simplex, duplex, bipartite and bicornuate uteri

Question 4

How is the simplex uterus in eutherian mammals different from the other three types?

What implications does this have for offspring produced?

Answer 4

The simplex uterus has one uterus, and the others have two separate uterine horns

Mammals with a simplex uterus tend to have less offspring per litter

Question 5

How is the duplex uterus in eutherian mammals different from the other three types?

Answer 5

It is the only uterine type that has two cervixes, one each for the separate uterine horns

Question 6

Which eutherian mammal uterine types have a septum partitioning the uterus?

Answer 6

Bipartite and duplex

Question 7

What is the difference between bipartite and bicornuate uterus types in eutherian mammals?

Answer 7

The bipartite uterus has a septum partially partitioning the body of the uterus

The bicornuate has no septum