Question

How many arteries are there in an umbilical cord?
1. Three
2. One
3. Two
4. Four

Answer 1

Correct Answer - Option 3 : Two

The correct answer is Two.

• There are two arteries in an umbilical cord.

• The umbilical cord:
  • During pregnancy, it is a flexible, tube-like structure that connects the fetus to the mother.
  • The cord transports nutrients to the baby and also carries away the waste products of the baby.
  • The cord is made up of two arteries and one vein.
• Arteries carry pure blood from the heart to other parts of the body.
• Veins carry impure blood to the heart.

• Blood:
  • The quantity of blood in the human body is 7% of the total weight.
  • Blood is connective tissue and is composed of blood corpuscles, plasma, and platelets.
  • It is slightly alkaline in nature.
  • Its pH is 7.4.
  • Its volume in an adult human is 5.8 L.
  • Plasma:
    • This is the liquid part of blood.
    • 60% of the blood is plasma.
    • 90% part of the blood is water, 7% protein, 0.9% salt, and 0.1% is glucose.
  • Blood corpuscles:
• The remaining 40% part of the blood is made of corpuscles