Pregnancy and Pregnancy Hormones

Q. External genitals are well developed in a fetus at the end of

1. 12 weeks
2. 6 weeks
3. 18 weeks
4. 24 weeks

Q. What is mean by ovoviviparous?

Q. The chances of survival of young one is greater inorganisms.

1. oviparous
2. viviparous
3. ovoviviparous

Q. Formation of eyelashes, separation of eyelids and hair growth on the body of the foetus are usually observed during

1. the third month of pregnancy
   
2. the fifth month of pregnancy
   
3. the sixth month of pregnancy
4. the ninth month of pregnancy
   

Q. Which one of the following is not the function of placenta?

1. Facilitates supply of oxygen and nutrients to embryo
2. Secretes oestrogen
3. Facilitates removal of carbon dioxide and waste material from embryo
4. Secretes oxytocin during parturition

Q. In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was

1. high levels of FSH and LH in uterus to stimulate endometrial
   thickening
2. high level of circulating hCG to stimulate estrogen and progesterone secretion
3. high level of circulating FSH and LH in uterus to stimulate
   implantation of the embryo
4. high level of the circulating hCG to stimulate endometrial thickening

Q.

Copy and complete the following by filling in the blanks A-D with appropriate words.
After one month of pregnancy, the embryos A is formed. By the end of the 2nd month of pregnancy, the fetus develops limbs and digits. By the end of 3-4th month, most of the major organ systems are formed, for example, the limbs and external genital organs are well-developed. By the end of B the body is covered with fine hair, eyelids separate, and eyelashes are formed.

Q.

Human placenta is derived from:

1. Allantois and chorion

2. Allantois

3. Amnion

4. Chorion

Q.

Name the hormone present in urine and is used for pregnancy test.

Q. In a family, mother is affected by Down's syndrome and father is normal then what will be the percentage of affected offspring?

1. 50%
2. 100%
3. 25%
4. 75%

Q. Statement 1: Second-trimester abortions are much more complicated.
Statement 2: After 12 weeks, the foetus becomes intimately associated with the maternal tissues.
Choose the correct option.

1. Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1
2. Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1
3. Statement 1 is correct and statement 2 is incorrect
4. Both statements 1 and 2 are incorrect

Q. From the given list, select the number of hormones which are not secreted by placenta:
FSH, LH, hCG, hPL, estrogen, progesterone, cortisol, prolactin, thyroxine, relaxin.

Q.

In a normal pregnant woman, the amount of total gonandotropin activity was assessed. The results expected was:

1. High levels of FSH and LH in uterus to stimulate endometrial thickening

2. High level of circulating HCG to stimulate endometrial thickening

3. High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo

4. High level of circulating HCG to stimulate estrogen and progesterone synthesis

Q. Hormones secreted by the placenta to maintain pregnancy are:

1. hCG, hPL, progestogens, estrogens
2. hCG, hPL, estrogens, relaxin, oxytocin
3. hCG, hPL, progestogens, prolactin
4. hCG, progestogens, estrogens, glucocorticoids

Q.

During menstrual cycle the cyclical changes take place in

1. Endometrium

2. Myometrium

3. Perimetrium

4. Corpus luteum

Q.

Why are the chances of survival of younger ones higher in Viviparous entities?

Q.

What are the phases in the Menstrual cycle?

Q.

Why is it that the chance of having a child with Downs syndrome increases if the age of the mother exceeds 40?

Q. Write ‘True’ or ‘False’ for the statement given below:

Proliferative phase of the menstrual cycle is characterised by increased secretion of estrogens while luteal phase is characterised by increased secretion of progesterone.

1. True
2. False

Q.

Write the names of the hormones which are involved in induction of parturition.

Q. Fertilised eggs of Periplanata americana are encased in

1. Cocoon
2. Phallomere
3. Genital chamber
4. Ootheca

Q. State the role of centrioles other than spindle formation.

Q. What is decidual and haemochorial placenta?(describe in detail)

Q. Pregnancy in second trimester is maintained by

1. HCG (human chorionic gonadotropin)
   
2. Testosterone
3. Progesterone
4. Both A and B

Q. Why are offspring of oviparous animals at a greater risk as compared to offspring of viviparous animals?

Q.

What hormone dilates the cervix?

Q. (a) What is gestation period? How much is the gestation period in humans? ​

Q.

What happens if fertilization fails?

Q. Which phase of menstrual cycle starts after ovulation?

1. Follicular phase
2. Menstrual phase
3. Luteal phase
4. Bleeding phase

Q.

What is parturition?