(i) When and how does placenta develop in human female? (ii)How is the placenta connected to the embryo? (iii)Placenta acts as an endocrine gland. Explain. -Biology

(i) When and how does placenta develop in human female? (ii)How is the placenta connected to the embryo? (iii)Placenta acts as an endocrine gland. Explain. -Biology
by

1 Answer

Answer :

(i)Development of placenta in human female  After implantation of blastocyst, the finger-like projections called chorionic villi, appear on the trophoblast and is surrounded by uterine tissue and maternal blood which become interdigitated with each other to form placenta. (ii) Placenta is connected to the embryo through an umbilical cord. (iii) Placenta acts as an endocrine tissue as it secretes hormones like (a) hCG (human Chorionic Gonadotropin) (b) hPL (human Placental Lactogen) (c) Oestrogens (d) Progesteronem
by

Related questions

Describe the post-zygotic events leading to implantation and placenta formation in humans. Mention any two functions of placenta. [All India 2010] or Explain the process of fertilisation in human female and trace the post-fertilisation events in a sequential order up to implantation of the embryo. [Foreign 2010] -Biology

Description : Describe the post-zygotic events leading to implantation and placenta formation in humans. Mention any two functions of placenta. [All India 2010] or Explain the process of fertilisation in human female ... events in a sequential order up to implantation of the embryo. [Foreign 2010] -Biology

Last Answer : Post-zygotic events leading to implantation and placenta formation. After implantation of blastocyst, the finger-like projections called chorionic villi, appear on the trophoblast and is surrounded by ... acts as an endocrine gland and secretes hormones like hPL, hCG, oestrogen and progesterone.

Placenta acts as an endocrine tissue. Justify. -Biology

Description : Placenta acts as an endocrine tissue. Justify. -Biology

Last Answer : Placenta acts as an endocrine tissue as it secretes hormones like (i) hCG (human Chorionic Gonadotropin) (ii) hPL (human Placental Lactogen) (iii) Oestrogens (iv) Progesterone

Select the option which correctly matches the endocrine gland with its hormone and its function. Endocrine Hormone Function gland (a) Placenta Estrogen Initiates secretion of the milk (b) Corpus Estrogen Essential for luteum maintenance of endometrium (c) Leydig’s Androgen Initiates the cells production of sperms (d) Ovary FSH Stimulates follicular development and the secretion of estrogens

Description : Select the option which correctly matches the endocrine gland with its hormone and its function. Endocrine Hormone Function gland (a) Placenta Estrogen Initiates secretion of the milk (b) Corpus ... of sperms (d) Ovary FSH Stimulates follicular development and the secretion of estrogens

Last Answer : (c) Leydig’s Androgen Initiates the cells production of sperms

In which trimester does the following occur A sac called a placenta forms around the embryo and is connected to the embryo with an umbilical cord.?

Description : In which trimester does the following occur A sac called a placenta forms around the embryo and is connected to the embryo with an umbilical cord.?

Last Answer : What is the answer ?

(i) How is placenta formed in human female? (ii) Name any two hormones which are secreted by it and are also present in a non-pregnant woman. [ -Biology

Description : (i) How is placenta formed in human female? (ii) Name any two hormones which are secreted by it and are also present in a non-pregnant woman. [ -Biology

Last Answer : i)After implantation of blastocyst, the finger-like projections called chorionic villi, appear on the trophoblast and is surrounded by uterine tissue and maternal blood which become interdigitated with each ... by placenta that are also present in a non-pregnant women are oestrogen and progesterone.

Which part of ovary in mammals acts as an endocrine gland after ovulation?

Description : Which part of ovary in mammals acts as an endocrine gland after ovulation?

Last Answer : Which part of ovary in mammals acts as an endocrine gland after ovulation? A. Stroma B. ... membrane C. Germinal epithelium D. Graafian foolicle.

Which part of ovary in mammals acts as an endocrine gland after ovulation?

Description : Which part of ovary in mammals acts as an endocrine gland after ovulation?

Last Answer : Which part of ovary in mammals acts as an endocrine gland after ovulation? A. Vitelline membrane B. Graffian follicle C. Stroma D. Germinal epithelium

Which part of ovary in mammals acts as an endocrine gland after ovulation ?

Description : Which part of ovary in mammals acts as an endocrine gland after ovulation ?

Last Answer : Which part of ovary in mammals acts as an endocrine gland after ovulation ? A. Vitelline ... . Graffian follicle C. Stroma D. Germinal epithelium

Which acts both, an exocrine gland and an endocrine gland?

Description : Which acts both, an exocrine gland and an endocrine gland?

Last Answer : Pancreas, Testis, Ovary

Which part of ovary in mammals acts as an endocrine gland after ovulation? (a) Stroma (b) Germinal epithelium (c) Vitelline membrane (d) Graafian follicle

Description : Which part of ovary in mammals acts as an endocrine gland after ovulation? (a) Stroma (b) Germinal epithelium (c) Vitelline membrane (d) Graafian follicle

Last Answer : (d) Graafian follicle

Which endocrine organ acts like the postganglionic neurons of the sympathetic nervous system? A) thyroid gland B) thymus gland C) adrenal cortex D) adrenal medulla E) islets of Langerhans of the pancreas

Description : Which endocrine organ acts like the postganglionic neurons of the sympathetic nervous system? A) thyroid gland B) thymus gland C) adrenal cortex D) adrenal medulla E) islets of Langerhans of the pancreas

Last Answer : D) adrenal medulla

Match column I with column II and select the correct option using the given codes. Column I Column II A. Mons pubis (i) Embryo formation B. Antrum (ii) Sperm C. Trophectoderm (iii)Female external genitalia D. Nebenkern (iv) Graafian follicle (a) A-(iii), B-(iv), C-(ii), D-(i) (b) A-(iii), B-(iv), C-(i), D-(ii) (c) A-(iii), B-(i), C-(iv), D-(ii) (d) A-(i), B-(iv), C-(iii), D-(ii

Description : Match column I with column II and select the correct option using the given codes. Column I Column II A. Mons pubis (i) Embryo formation B. Antrum (ii) Sperm C. Trophectoderm (iii)Female external genitalia D. Nebenkern (iv) Graafian ... (i), C-(iv), D-(ii) (d) A-(i), B-(iv), C-(iii), D-(ii

Last Answer : (b) A-(iii), B-(iv), C-(i), D-(ii)

Match the following columns and select the correct option. Column-I Column-II (A) Placenta (i) Androgens (B) Zona pellucida (ii) Human Chorionic Gonadotropin (HCG) (C) Bulbourethral glands (iii) Layer of the ovum (D) Leydig cells (iv) Lubrication of the penis (A) (B) (C) (D) (a) (iv) (iii) (i) (ii) (b) (i) (iv) (ii) (iii) (c) (iii) (ii) (iv) (i) (d) (ii) (iii) (iv) (i)

Description : Match the following columns and select the correct option. Column-I Column-II (A) Placenta (i) Androgens (B) Zona pellucida (ii) Human Chorionic Gonadotropin (HCG) (C) Bulbourethral glands (iii) Layer of the ovum (D) Leydig cells (iv) ... (ii) (iii) (c) (iii) (ii) (iv) (i) (d) (ii) (iii) (iv) (i)

Last Answer : (d) (ii) (iii) (iv) (i)

What are the endocrine functions of the placenta ?

Description : What are the endocrine functions of the placenta ?

Last Answer : The placenta has endocrine function since it secretes the hormones progesterone and estrogens that maintain the endometrium (internal covering of the uterus) and prevent menses during pregnancy. The placenta also secretes other important hormones for pregnancy regulation.

Study the given figure below and answer the question that follow important-questions-for-class-12-biology-cbse-fertilisation-pregnancy-and-embryonic-development-t-33-3 (i)Name the stage of human embryo the figure represents. (ii)Identify Ain the figure and mention its function. (iii)Mention the fate of the inner cell mass after implantation in the uterus. (iv)Where are the stem cells located in this embryo? -Biology

Description : Study the given figure below and answer the question that follow important-questions-for-class-12-biology-cbse-fertilisation-pregnancy-and-embryonic-development-t-33-3 (i)Name the stage of human embryo the ... implantation in the uterus. (iv)Where are the stem cells located in this embryo? -Biology

Last Answer : (i)The stage is blastocyst. (ii) A—Trophoblast. It helps in attachment to endometrium during implantation and provides nourishment to developing embryo. (iii) Inner cell mass acts as precursor to embryo ... into ectoderm and endoderm. (iv) Stem cells are located in inner cell mass of embryo.

The structure which helps in the nutrition of the Embryo is – (1) Yolk sac (2) Amniotic membrane (3) Crypts (4) Placenta

Description : The structure which helps in the nutrition of the Embryo is – (1) Yolk sac (2) Amniotic membrane (3) Crypts (4) Placenta

Last Answer : (1) Yolk sac Explanation: The yolk sac is a membranous sac attached to an embryo, providing early nourishment. It functions as the developmental circulatory system of the human embryo, ... It carries out transfer of nutrients in weeks 2 and 3 when the uteroplacental circulation is established

Excretory products of mammalian embryo are eliminated out by - (1) Placenta (2) Amniotic fluid (3) Allantois (4) Ureter

Description : Excretory products of mammalian embryo are eliminated out by - (1) Placenta (2) Amniotic fluid (3) Allantois (4) Ureter

Last Answer : (1) Placenta Explanation: The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood ... are also found in some snakes and lizards with yawing levels of development up to mammalian levels.

Which one of the following is not the function of placenta? (a) Facilitates removal of carbon dioxide and waste material from embryo (b) Secretes oxytocin during parturition (c) Facilitates supply of oxygen and nutrients to embryo (d) Secretes estrogen

Description : Which one of the following is not the function of placenta? (a) Facilitates removal of carbon dioxide and waste material from embryo (b) Secretes oxytocin during parturition (c) Facilitates supply of oxygen and nutrients to embryo (d) Secretes estrogen

Last Answer : (b) Secretes oxytocin during parturition

What structure attaches the embryo to the placenta?

Description : What structure attaches the embryo to the placenta?  

Last Answer : ANSWER: UMBILICAL CORD

The placenta in humans is derived from the: a) embryo only b) uterus only c) endometrium and embryo d) none of the above

Description : The placenta in humans is derived from the: a) embryo only b) uterus only c) endometrium and embryo d) none of the above

Last Answer : ANSWER: C -- ENDOMETRIUM AND EMBRYO 

The structure which helps in the nutrition of the Embryo is (1) Yolk sac (2) Amniotic membrane (3) Crypts (4) Placenta

Description : The structure which helps in the nutrition of the Embryo is (1) Yolk sac (2) Amniotic membrane (3) Crypts (4) Placenta

Last Answer : Yolk sac 

Excretory products of mammalian embryo are eliminated out by (1) Placenta (2) Amniotic fluid (3) Allantois (4) Ureter

Description : Excretory products of mammalian embryo are eliminated out by (1) Placenta (2) Amniotic fluid (3) Allantois (4) Ureter

Last Answer : Placenta

What is the name of the smallest endocrine gland located in human body ?

Description : What is the name of the smallest endocrine gland located in human body ?

Last Answer : Pineal gland.

$ The endocrine part of human pancreas is represented by `alpha` a and `beta` cells. ! Endocrine gland have ducts.

Description : $ The endocrine part of human pancreas is represented by `alpha` a and `beta` cells. ! Endocrine gland have ducts.

Last Answer : $ The endocrine part of human pancreas is represented by `alpha` a and `beta` cells. ! Endocrine gland ... is wrong D. If both As and R are wrong.

Which one of the following is the smallest endocrine gland in human body? (1) Adrenal (2) Thyroid (3) Pituitary (4) Pancreas

Description : Which one of the following is the smallest endocrine gland in human body? (1) Adrenal (2) Thyroid (3) Pituitary (4) Pancreas

Last Answer : (3) Pituitary Explanation: Pituitary gland, called Master Gland, is the smallest endocrine gland. It controls the general growth of the body and stimulates the primary sex hormones, i.e. ovaries and testes.

A temporary endocrine gland in the human body is (a) corpus cardiacum (b) corpus luteum (c) corpus allatum (d) pineal gland.

Description : A temporary endocrine gland in the human body is (a) corpus cardiacum (b) corpus luteum (c) corpus allatum (d) pineal gland.

Last Answer : b) corpus luteum

A temporary endocrine gland in the human body is : (1) Corpus cardiacum (2) corpus luteum (3) Corpus allatum (4) Pineal gland

Description : A temporary endocrine gland in the human body is : (1) Corpus cardiacum (2) corpus luteum (3) Corpus allatum (4) Pineal gland

Last Answer : (2) corpus luteum

Which one of the following is the smallest endocrine gland in human body ? (1) Adrenal (2) Thyroid (3) Pituitary (4) Pancreas

Description : Which one of the following is the smallest endocrine gland in human body ? (1) Adrenal (2) Thyroid (3) Pituitary (4) Pancreas

Last Answer : Pituitary

Fetal ejection reflex in human female is induced by (a) release of oxytocin from pituitary (b) fully developed fetus and placenta (c) differentiation of mammary glands (d) pressure exerted by amniotic fluid.

Description : Fetal ejection reflex in human female is induced by (a) release of oxytocin from pituitary (b) fully developed fetus and placenta (c) differentiation of mammary glands (d) pressure exerted by amniotic fluid.

Last Answer : (b) fully developed fetus and placenta

In human female, the blastocyst (a) forms placenta even before implantation (b) gets implanted into uterus 3 days after ovulation (c) gets nutrition from uterine endometrial secretion only after implantation (d) gets implanted in endometrium by the trophoblast cells.

Description : In human female, the blastocyst (a) forms placenta even before implantation (b) gets implanted into uterus 3 days after ovulation (c) gets nutrition from uterine endometrial secretion only after implantation (d) gets implanted in endometrium by the trophoblast cells.

Last Answer : (d) gets implanted in endometrium by the trophoblast cells.

Why is pancreas both endocrine and exocrine gland? -Biology

Description : Why is pancreas both endocrine and exocrine gland? -Biology

Last Answer : answer:

(i)Explain the events taking place at the time of fertilisation of an ovum in a human female. (ii)Trace the development of the zygote up to its implantation in the uterus. (iii)Name and draw a labelled sectional view of the embryonic stage that gets implanted. -Biology

Description : (i)Explain the events taking place at the time of fertilisation of an ovum in a human female. (ii)Trace the development of the zygote up to its implantation in the uterus. (iii)Name and draw a labelled sectional view of the embryonic stage that gets implanted. -Biology

Last Answer : (i)In humans, the fertilisation of ovum takes place in ampullary-isthmic junction of Fallopian tube. The events that occur during the process of fertilisation are: (a) The sperm reaches the ... endometrium of the uterus. This is called implantation.(iii) Blastocyst stage implants in the uterus.

The following are true: a. Ig G crosses the placenta b. thymus gland is responsible for cellular immunity c. C1-9 is used by the alternative complement pathway d. eosinophils are responsible for phagocytosis

Description : The following are true: a. Ig G crosses the placenta b. thymus gland is responsible for cellular immunity c. C1-9 is used by the alternative complement pathway d. eosinophils are responsible for phagocytosis

Last Answer : Ig G crosses the placenta

Trapping of iodide by the following organ/organs is enhanced by thyrotropin: A. Thyroid B. Salivary gland C. Placenta D. All of the abov

Description : Trapping of iodide by the following organ/organs is enhanced by thyrotropin: A. Thyroid B. Salivary gland C. Placenta D. All of the abov

Last Answer : A. Thyroid

17.1 Trapping of iodide by the following organ/organs is enhanced by thyrotropin: A. Thyroid B. Salivary gland C. Placenta D. All of the abov

Description : 17.1 Trapping of iodide by the following organ/organs is enhanced by thyrotropin: A. Thyroid B. Salivary gland C. Placenta D. All of the abov

Last Answer : A. Thyroid

Which gland is both exo and endocrine gland? -General Knowledge

Description : Which gland is both exo and endocrine gland? -General Knowledge

Last Answer : The answer is 'Pancreas'

Which gland is both exo and endocrine gland? -General Knowledge

Description : Which gland is both exo and endocrine gland? -General Knowledge

Last Answer : answer:

Which is the largest endocrine gland in the body? -General Knowledge

Description : Which is the largest endocrine gland in the body? -General Knowledge

Last Answer : The thyroid gland is the largest endocrine gland in the body. It is located in the neck, below the larynx and in front of the trachea.

What is endocrine gland called ?

Description : What is endocrine gland called ?

Last Answer : : Ductless gland is called endocrine gland.

What is the name of the smallest endocrine gland ?

Last Answer : The smallest endocrine gland is the pineal body

Which is the largest endocrine gland ?

Last Answer : The largest endocrine gland is the thyroid

Assertion `:` The second largest digestive gland in our body is liver. Reason `:` Liver functions as an endocrine gland.

Description : Assertion `:` The second largest digestive gland in our body is liver. Reason `:` Liver functions as an endocrine gland.

Last Answer : Assertion `:` The second largest digestive gland in our body is liver. Reason `:` Liver functions as ... . D. If both Assertion & Reason are false.

A temporary endocrine gland in humans is

Description : A temporary endocrine gland in humans is

Last Answer : A temporary endocrine gland in humans is A. Islets of Langerhane B. Pineal body C. Corpus luteum D. Corpus allate.

$ Cerebrum is formed of four cerebral hemisphers. ! Pituitary gland is not a type of endocrine gland.

Description : $ Cerebrum is formed of four cerebral hemisphers. ! Pituitary gland is not a type of endocrine gland.

Last Answer : $ Cerebrum is formed of four cerebral hemisphers. ! Pituitary gland is not a type of endocrine gland. A. ... is wrong D. If both As and R are wrong.

Assertion : After ovulation ruptured graafian follicle transforms into corpus luteum . Reason : Corpus luteum act as endocrine gland and it is stable

Description : Assertion : After ovulation ruptured graafian follicle transforms into corpus luteum . Reason : Corpus luteum act as endocrine gland and it is stable

Last Answer : Assertion : After ovulation ruptured graafian follicle transforms into corpus luteum . Reason : Corpus ... If both Assertion & Reason are False.

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom :

Description : Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom :

Last Answer : Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function ... iodine in diet results in goitre"):}`

Which of the following endocrine gland functions as a biological clock and neurosecretory transducer ?

Description : Which of the following endocrine gland functions as a biological clock and neurosecretory transducer ?

Last Answer : Which of the following endocrine gland functions as a biological clock and neurosecretory transducer ? A. ... gland C. Pineal gland D. Thymus gland

A temporary endocrine gland formed in ovary after ovulation is

Description : A temporary endocrine gland formed in ovary after ovulation is

Last Answer : A temporary endocrine gland formed in ovary after ovulation is A. Corpus callosum B. Corpus albicans C. Corpus luteum D. Corpus striata

Endocrine gland responsible for immunity is

Description : Endocrine gland responsible for immunity is

Last Answer : Endocrine gland responsible for immunity is  A. Pineal B. Thymus C. Pituitary D. Adrenal