LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

DEVELOPMENTAL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In mammals, the umbilical cord is essential to the embryo for
A
nutrition, decorations, and growth
B
nutrition, getting oxygen, and removal of wastes
C
walking, respiration, and removal of wastes
D
nutrition, dancing, and removal of wastes
Explanation: 

Detailed explanation-1: -Through the blood vessels in the umbilical cord, the fetus gets all needed nutrition and oxygen. The fetus gets life support from the mother through the placenta. Waste products and carbon dioxide from the fetus are sent back through the umbilical cord and placenta to the mother’s circulation to be removed.

Detailed explanation-2: -usually within between three and 10 days. Almost all placental mammals do, in fact, intervene to sever the umbilical cord of their newborn. The exceptions are marine mammals and camels. Great apes usually bite through the cord in the process of eating the placenta.

Detailed explanation-3: -The umbilical cord is considered both the physical and emotional attachment between mother and fetus. This structure allows for the transfer of oxygen and nutrients from the maternal circulation into fetal circulation while simultaneously removing waste products from fetal circulation to be eliminated maternally.

Detailed explanation-4: -Hint: Umbilical cord is the birth cord, it is the conduit between the placenta and developing embryo. It is the genetic part of the fetus, that contains two arteries and one vein that is buried in Wharton’s jelly. Umbilical veins transport the oxygenated and nutrient-rich blood from the placenta.

There is 1 question to complete.