Advertisements
Advertisements
प्रश्न
Give reason.
Placenta is extremely essential for foetal development.
Advertisements
उत्तर
The placenta helps the growing embryo acquire nutrients from the mother's blood. The placenta has villi on the embryo's side of the tissues and blood spaces on the mother's side. These villi have a vast surface area, which aids in the transport of nourishment and oxygen from the mother to the foetus through blood. Waste substances created by the embryo are eliminated into the mother's blood via the placenta. Therefore, Placenta is extremely essential for foetal development.
APPEARS IN
संबंधित प्रश्न
Mention the functions of Ovary.
What is hymne?
Give appropriate term of the following:
The monthly discharge of blood and disintegrated uterine tissues in human female.
Complete the table.
| Sex/Gender | Reasons of infertility |
| Female | |
| Male |
Which part of the fallopian tube collects to ovum after ovulation?
Identify the layer that makes up the corona radiate.
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
Identify the functions of LH.
- Release of a secondary oocyte from Graafian follicle.
- Stimulates corpus luteum to secrete progesterone.
- Stimulates estrogen formation.
- Promotes development of egg to form secondary oocyte.
How does fertilisation take place? Fertilisation occurs once in a month. Comment.
The diagram given below shows a section of the human ovary.

- Name the process for the release of the part labelled 1.
- Write the name of the structure marked 2.
Clitoris is equivalent to the male penis.
