The layer of uterus which becomes much eroded due to placental villi is known as

Ovum receives the sperm in the region of

Implantation or uterine attachment of the blastocyst presumably occurs between

Which of the following is last part of the oviduct, which has narrow lumen and joins with the uterus?

In which of the following organism testes descends into scrotum in breeding season but in non-breeding season goes up