2 can be synthesized by the newborn infant but not by a foetus.
3 stimulates further secretion of oxytocin for uterine contraction.
4 is a source of antibodies essential to develop resistance against diseases in new born babies.
Explanation:
(d) Milk produced during the initial few days of lactation is called colostrum. This contains several antibodies absolutely essential to develop resistance for the newborn babies.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286494
Which of the following hormone acts on uterine muscle and causes its stronger contraction?
1 Relaxin
2 Estrogen
3 Oxytocin
4 Progesterone
Explanation:
(c) Oxytocin acts on the uterine muscle and causes its strong contractions, which inturn further stimulates the secretion of oxytocin making a kind of feedback loop. Thus, the resultant stimulatory reflex between the uterine contraction and oxytocin secretion continues
resulting in stronger and stronger contractions.
Human Reproduction(NCERT)
286495
Which of the following induces foetal ejection reflex?
1 Initiation of lactation
2 Fully developed foetus and placenta
3 Expulsion of the baby out of the uterus.
4 Transport of embryo in the fallopian tube.
Explanation:
(b) Fully developed foetus and the placenta induce foetal ejection reflex. Foetal ejection reflex is also called mild uterine contraction.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286496
During parturition, a pregnant woman is having prolonged labour pains and child birth has to be fastened. It is advisable to administer a hormone that can
1 increase the metabolic rate.
2 release glucose in the blood.
3 stimulate the ovary.
4 activate smooth muscles.
Explanation:
(d) activate smooth muscles
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286497
Study the statement given below and answer the question. 'Vigorous contraction of the ' $X$ ' at the end of the ' $Y$ ' causes expulsion of the foetus." Identify $X$ and $Y$.
1 X-Vagina ; $Y$ - Fertilization
2 $X$ - Uterus; $Y$ - Pregnancy
3 $X$ - Placenta ; $Y$ - Implantation
4 $X$ - Embryo ; $Y$ - Ovulation
Explanation:
(b) Vigorous contraction of the uterus at the end of the pregnancy causes expulsion of the foetus.
2 can be synthesized by the newborn infant but not by a foetus.
3 stimulates further secretion of oxytocin for uterine contraction.
4 is a source of antibodies essential to develop resistance against diseases in new born babies.
Explanation:
(d) Milk produced during the initial few days of lactation is called colostrum. This contains several antibodies absolutely essential to develop resistance for the newborn babies.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286494
Which of the following hormone acts on uterine muscle and causes its stronger contraction?
1 Relaxin
2 Estrogen
3 Oxytocin
4 Progesterone
Explanation:
(c) Oxytocin acts on the uterine muscle and causes its strong contractions, which inturn further stimulates the secretion of oxytocin making a kind of feedback loop. Thus, the resultant stimulatory reflex between the uterine contraction and oxytocin secretion continues
resulting in stronger and stronger contractions.
Human Reproduction(NCERT)
286495
Which of the following induces foetal ejection reflex?
1 Initiation of lactation
2 Fully developed foetus and placenta
3 Expulsion of the baby out of the uterus.
4 Transport of embryo in the fallopian tube.
Explanation:
(b) Fully developed foetus and the placenta induce foetal ejection reflex. Foetal ejection reflex is also called mild uterine contraction.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286496
During parturition, a pregnant woman is having prolonged labour pains and child birth has to be fastened. It is advisable to administer a hormone that can
1 increase the metabolic rate.
2 release glucose in the blood.
3 stimulate the ovary.
4 activate smooth muscles.
Explanation:
(d) activate smooth muscles
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286497
Study the statement given below and answer the question. 'Vigorous contraction of the ' $X$ ' at the end of the ' $Y$ ' causes expulsion of the foetus." Identify $X$ and $Y$.
1 X-Vagina ; $Y$ - Fertilization
2 $X$ - Uterus; $Y$ - Pregnancy
3 $X$ - Placenta ; $Y$ - Implantation
4 $X$ - Embryo ; $Y$ - Ovulation
Explanation:
(b) Vigorous contraction of the uterus at the end of the pregnancy causes expulsion of the foetus.
2 can be synthesized by the newborn infant but not by a foetus.
3 stimulates further secretion of oxytocin for uterine contraction.
4 is a source of antibodies essential to develop resistance against diseases in new born babies.
Explanation:
(d) Milk produced during the initial few days of lactation is called colostrum. This contains several antibodies absolutely essential to develop resistance for the newborn babies.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286494
Which of the following hormone acts on uterine muscle and causes its stronger contraction?
1 Relaxin
2 Estrogen
3 Oxytocin
4 Progesterone
Explanation:
(c) Oxytocin acts on the uterine muscle and causes its strong contractions, which inturn further stimulates the secretion of oxytocin making a kind of feedback loop. Thus, the resultant stimulatory reflex between the uterine contraction and oxytocin secretion continues
resulting in stronger and stronger contractions.
Human Reproduction(NCERT)
286495
Which of the following induces foetal ejection reflex?
1 Initiation of lactation
2 Fully developed foetus and placenta
3 Expulsion of the baby out of the uterus.
4 Transport of embryo in the fallopian tube.
Explanation:
(b) Fully developed foetus and the placenta induce foetal ejection reflex. Foetal ejection reflex is also called mild uterine contraction.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286496
During parturition, a pregnant woman is having prolonged labour pains and child birth has to be fastened. It is advisable to administer a hormone that can
1 increase the metabolic rate.
2 release glucose in the blood.
3 stimulate the ovary.
4 activate smooth muscles.
Explanation:
(d) activate smooth muscles
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286497
Study the statement given below and answer the question. 'Vigorous contraction of the ' $X$ ' at the end of the ' $Y$ ' causes expulsion of the foetus." Identify $X$ and $Y$.
1 X-Vagina ; $Y$ - Fertilization
2 $X$ - Uterus; $Y$ - Pregnancy
3 $X$ - Placenta ; $Y$ - Implantation
4 $X$ - Embryo ; $Y$ - Ovulation
Explanation:
(b) Vigorous contraction of the uterus at the end of the pregnancy causes expulsion of the foetus.
2 can be synthesized by the newborn infant but not by a foetus.
3 stimulates further secretion of oxytocin for uterine contraction.
4 is a source of antibodies essential to develop resistance against diseases in new born babies.
Explanation:
(d) Milk produced during the initial few days of lactation is called colostrum. This contains several antibodies absolutely essential to develop resistance for the newborn babies.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286494
Which of the following hormone acts on uterine muscle and causes its stronger contraction?
1 Relaxin
2 Estrogen
3 Oxytocin
4 Progesterone
Explanation:
(c) Oxytocin acts on the uterine muscle and causes its strong contractions, which inturn further stimulates the secretion of oxytocin making a kind of feedback loop. Thus, the resultant stimulatory reflex between the uterine contraction and oxytocin secretion continues
resulting in stronger and stronger contractions.
Human Reproduction(NCERT)
286495
Which of the following induces foetal ejection reflex?
1 Initiation of lactation
2 Fully developed foetus and placenta
3 Expulsion of the baby out of the uterus.
4 Transport of embryo in the fallopian tube.
Explanation:
(b) Fully developed foetus and the placenta induce foetal ejection reflex. Foetal ejection reflex is also called mild uterine contraction.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286496
During parturition, a pregnant woman is having prolonged labour pains and child birth has to be fastened. It is advisable to administer a hormone that can
1 increase the metabolic rate.
2 release glucose in the blood.
3 stimulate the ovary.
4 activate smooth muscles.
Explanation:
(d) activate smooth muscles
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286497
Study the statement given below and answer the question. 'Vigorous contraction of the ' $X$ ' at the end of the ' $Y$ ' causes expulsion of the foetus." Identify $X$ and $Y$.
1 X-Vagina ; $Y$ - Fertilization
2 $X$ - Uterus; $Y$ - Pregnancy
3 $X$ - Placenta ; $Y$ - Implantation
4 $X$ - Embryo ; $Y$ - Ovulation
Explanation:
(b) Vigorous contraction of the uterus at the end of the pregnancy causes expulsion of the foetus.
2 can be synthesized by the newborn infant but not by a foetus.
3 stimulates further secretion of oxytocin for uterine contraction.
4 is a source of antibodies essential to develop resistance against diseases in new born babies.
Explanation:
(d) Milk produced during the initial few days of lactation is called colostrum. This contains several antibodies absolutely essential to develop resistance for the newborn babies.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286494
Which of the following hormone acts on uterine muscle and causes its stronger contraction?
1 Relaxin
2 Estrogen
3 Oxytocin
4 Progesterone
Explanation:
(c) Oxytocin acts on the uterine muscle and causes its strong contractions, which inturn further stimulates the secretion of oxytocin making a kind of feedback loop. Thus, the resultant stimulatory reflex between the uterine contraction and oxytocin secretion continues
resulting in stronger and stronger contractions.
Human Reproduction(NCERT)
286495
Which of the following induces foetal ejection reflex?
1 Initiation of lactation
2 Fully developed foetus and placenta
3 Expulsion of the baby out of the uterus.
4 Transport of embryo in the fallopian tube.
Explanation:
(b) Fully developed foetus and the placenta induce foetal ejection reflex. Foetal ejection reflex is also called mild uterine contraction.
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286496
During parturition, a pregnant woman is having prolonged labour pains and child birth has to be fastened. It is advisable to administer a hormone that can
1 increase the metabolic rate.
2 release glucose in the blood.
3 stimulate the ovary.
4 activate smooth muscles.
Explanation:
(d) activate smooth muscles
NCERT Page-54 / N-38
Human Reproduction(NCERT)
286497
Study the statement given below and answer the question. 'Vigorous contraction of the ' $X$ ' at the end of the ' $Y$ ' causes expulsion of the foetus." Identify $X$ and $Y$.
1 X-Vagina ; $Y$ - Fertilization
2 $X$ - Uterus; $Y$ - Pregnancy
3 $X$ - Placenta ; $Y$ - Implantation
4 $X$ - Embryo ; $Y$ - Ovulation
Explanation:
(b) Vigorous contraction of the uterus at the end of the pregnancy causes expulsion of the foetus.
