The diagram given below is that of a developing human foetus. Study the diagram and then answer the questions that follow: The diagram given below is that of a developing human foetus. Study the diagram and then answer the questions that follow:

Label the parts numbered 1 to 3 in the diagram.
Topic: Structures of the developing foetus
Answer
1 — UMBILICAL CORD 2 — PLACENTA 3 — AMNIOTIC FLUID
Identify each by its POSITION and SHAPE: the UMBILICAL CORD is the rope-like structure joining the foetus to the placenta the PLACENTA is the disc-shaped structure attached to the uterine wall the AMNIOTIC FLUID fills the space surrounding the foetus, enclosed by the amnion
The three work together as one system: the PLACENTA is the exchange surface, the CORD is the pipeline, and the FLUID is the cushion.