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प्रश्न
Diagram shows the reproductive system of female human beings:
(i) Name the parts numbered 1 to 14.
(ii) Normally, after how many days does an ovary release an egg?
(iii) Where are the sperms released during coitus?
(iv) What is the role of sperms after their ejaculation in vagina?
(v) What is the function of the organ numbered 5?
(vi) What is the gestation period in human?
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उत्तर
(i)
- Fallopian tube
- Funnel like opening
- Ovary
- Uterus
- Sacrum
- Rectum
- Cervix
- Anus
- Vagina
- Front of pelvis
- Bladder
- Muscular uterine wall
- Muscular wall of abdomen
- Peritoneum
(ii) Normally, after 28 days an ovary releases an egg.
(iii) During coitus, sperm are released in the vagina.
(iv) After ejaculation in vagina, sperms undergo fertilization where it fuses with an ovum of female to form zygote.
(v) The function of sacrum is to protect the pelvic organs or reproductive organs of female.
(vi) The gestation period in human is 280 days.
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संबंधित प्रश्न
Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria
Given below are diagrams showing the different stages in the process of fertilisation of an egg. in the human female reproductive tract.
Study the diagrams and answer the questions:
1) Arrange the letters given below each diagram in a logical sequence to show the correct order in the process of fertilisation.
2) Where does fertilisation normally take place? and What is ‘Implantation’ that follows fertilisation?
3) Mention the chromosome number of the egg and zygote in humans.
4) Explain the term ‘Gestation’. How long does Gestation last in humans?
5) Draw a neat, labelled diagram of a mature human sperm.
What is the frequency of menstrual cycle in human females (or women)?
Write the names of male sex hormone?
Draw a labelled diagram of the human female reproductive system. With the help of this diagram, explain the working of human female reproductive system.
What joins embryo to placenta in mother's body?
During adolescence, several changes occur in the human body. Mark one change from the following associated with sexual maturation in boys.
Name the organs of the human male reproductive system and state the functions of any two organs.
Mention the importance of the position of the testes in humans.
Consider the following:
- The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis.
- The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females.
- The first polar body is associated with the formation of the primary oocyte.
- Luteinising Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding.
Choose the correct answer from the options given below:
