Advertisements
Advertisements
प्रश्न
Name and explain the role of the inner and middle walls of the human uterus.
Advertisements
उत्तर
The inner glandular wall of the uterus is known as endometrium.
Role - During the menstrual cycle, the endometrium wall grows into a thick, blood vessel-rich, glandular layer. This condition of the endometrium favours the implantation of the foetus. If fertilisation does not occur, the endometrium is shed during the hemorrhagic phase of the menstrual cycle.
The middle wall of the uterus is known as myometrium.
Role- It consists of smooth muscles. It brings about contraction while delivery of the baby.
संबंधित प्रश्न
Draw a neat and well-labeled diagram showing T.S. of the ovary and describe the menstrual cycle in human females.
Why menstrual cycle does not take place before puberty and during pregnancy?
Read the following passage and answer the question that follows:
Rahini and her parents were watching a television programme. An advertisement flashed on the screen which was promoting the use of sanitary napkins. Rahini’s parents suddenly changed the channel, but she objected to her parents and explained the need and importance of such an advertisement.
What is first menstruation called? When does it occur?
The luteal phase of the menstrual cycle is also called the secretory phase. Give reason.
Explain the various phases of the menstrual cycle.
How long does the secretory phase of the menstrual cycle last?
When does ovulatory phase occur?
____________ is transformed to corpus luteum during luteal phase of the menstrual cycle.
In the human female, menstruation can be deferred by the administration of ______.
Distinguish between pollination and fertilisation. Mention the site and product of fertilisation in a flower.
Draw a neat, labelled diagram of a pistil showing pollen tube growth and its entry into the ovule.
