Question

1)describe the appearance of the placenta. what does its form suggest about its function? 2)draw one of the stages of the human pregnancy series and pleas label the following: placenta, uterus, cervix, vagina, fallopian tube, ovaries, embryo, embryo, umbilical cord and amnion. Pleas answer BOTH of the questions and make the picture clear (the answears for aech question dont need to be long at all anywhere from 2-3 sentances)

Answer 1

In humans, the placenta is usually disc shape, it is dark reddish - blue or crimson color. It is about 22 cm in diameter and 2-2.5 cm thick and weighs about 470g (1lb). And the center of placenta is thickest and the edges are thinnest.
Placenta connects the fetus by a umblical cord of 55-60 cm in length it contain two umblical arteries and one umblical vein.

Functions of placenta;
Placenta connects the developing fetus to uterine wall to allow nutrient uptake, fight against internal infection and produce hormones to support pregnancy.
placenta provides oxygen and nutrients to growing babies and removes waste product from the baby's blood. It help in gas exchange via mother's blood supply , provide thermo regulation of the fetus.

lokl Placenta uteus tallopan Ammighte cac fetus Cavin Caurix