What does the mother’s blood take away from the baby and into the placenta?

I originate from the digestive canal of the embryo. I am a tube like structure I have very important blood vassels that connect the embryo with the placenta. Who am I?

What does Graham’s law state?

Which type of blood vessels carry blood away from the heart?

Which type of blood vessels carry blood away from the heart?

What shape does the water take if it spill on the floor ?

What is growth ? How does it take place ?

Transmission of HIV occurs by I) sexual contact with infected person II) transfusion of contaminated blood. III) sharing infected needles. IV) from infected mother to the baby through placenta. Which of the statements given above are correct?

Describe the blood vessels that carry away blood from human heart?