Final Answer:
A normal umbilical cord have 3 blood vessels
Therefore, correct answer is c. 3.
Step-by-step explanation:
A normal umbilical cord typically has three blood vessels. Two of these vessels are arteries, responsible for carrying deoxygenated blood from the fetus to the placenta, and one is a vein, carrying oxygenated blood from the placenta to the fetus. This unique arrangement allows for the exchange of nutrients and oxygen between the fetus and the mother's circulation, supporting the developing baby during pregnancy.
Understanding the composition of the umbilical cord is essential in prenatal care and childbirth education. The presence of three blood vessels facilitates the necessary exchange of substances vital for fetal growth and development, highlighting the intricate nature of the mother-baby connection during pregnancy.
Therefore, correct answer is c. 3.