Tag: placenta

Questions Related to placenta

Which of the following structures serves as a lung, digestive tract, and kidney for the developing embryo?

zoology reproduction in humans placenta pregnancy and birth fertilization and post fertilization in humans

  1. Placenta

  2. Endometrium

  3. Amnion

  4. Liver

Show answer
Correct Option: A
Explanation:

The placenta is an organ that develops in the uterus during pregnancy. This structure provides oxygen and nutrients to the growing baby and removes waste products from the baby's blood. The placenta attaches to the wall of the uterus, and the baby's umbilical cord arises from it. The organ is usually attached to the top, side, front or back of the uterus.

So the correct option is 'placenta'.

State whether the following statements are true or false .
Endometrium is highly vascular and rich in glands.

zoology reproduction in humans placenta pregnancy and birth fertilization and post fertilization in humans

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
In the uterus, simple tubular glands reach from the endometrial surface through to the base of the stroma, which also carries a rich blood supply provided by the spiral arteries
So, the correct answer is 'True'

Choose the correct answers from the alternatives given.
The placenta

zoology reproduction in humans placenta pregnancy and birth fertilization and post fertilization in humans

  1. is formed by the inner portion of the chorion

  2. contacts a portion of the mothers endometrium

  3. allows the fetus and the mother to exchange nutrients and waste products

  4. all of the above

Show answer
Correct Option: D
Explanation:

The placenta facilitates the supply of oxygen and nutrients to the embryo and also the removal of carbon dioxide and excretory/waste materials produced by the embryo. It is formed from the chorion. 

So the correct option is 'All of the above'.

State whether the following statements are true or false .
The placenta in humans is the true placenta in which foetal and maternal parts can be easily separated without any bleeding.

zoology reproduction in humans placenta pregnancy and birth fertilization and post fertilization in humans

  1. True

  2. False

Show answer
Correct Option: B
Explanation:
The placenta is delivered as part of the afterbirth with a small gush of blood, from a few minutes to a half hour after the baby arrives. The doctor or midwife will examine it to make sure it's intact and that nothing has been left behind in the uterus
So, the correct answer is 'False'

On the basis of intimacy Human placenta is 

zoology reproduction in humans placenta pregnancy and birth fertilization and post fertilization in humans

  1. Interstitial placenta

  2. Deciduate placenta

  3. Discoidal placenta

  4. Yolk sac placenta

Show answer
Correct Option: A