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प्रश्न
With a suitable diagram, describe the organisation of mammary gland.
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उत्तर
A functional mammary gland is characteristic of all female mammals. The mammary glands are paired structures (breasts) that contain glandular tissue and variable amount of fat. The glandular tissue of each breast is divided into 15 – 20 mammary lobes containing clusters of cells called alveoli. The cells of alveoli secrete milk, which is stored in the cavities (lumens) of alveoli.
The alveoli open into mammary tubules. The tubules of each lobe join to form a mammary duct. Several mammary ducts join to form a wider mammary ampulla which is connected to lactiferous ducts through which milk is sucked out.
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संबंधित प्रश्न
Draw a labelled diagram of the female reproductive system.
Which part of the human body produces Ova?
Choose the odd one in each of the following:
Seminiferous tubule; ovum; epididymis; sperm duct; urethra
Give appropriate term of the following:
The monthly discharge of blood and disintegrated uterine tissues in human female.
The diagram alongside is the vertical section of female reproductive organs. Study the diagram and answer the questions that follow:
(i) Name the fully developed part of ovary containing the ovum. (ii) Name the organ of the female body in which the foetus develops.
(iii) What is ovulation?
(iv) Which two hormones are secreted by ovary?
The adjoining figure represents the female reproductive organ of the humans
(i) How does the human embryo developing in the uterus obtain its nourishment?
(ii) Which structure protects and nourishes the developing embryo?
(iii) Define ovulation.
Contraction of which muscles are responsible for causing labour during parturition?
Mark the CORRECT sequence of structures in the breast from the inner to the outer side.
Ovulation occurs under the influence of ______.
Extra-embryonic membranes of the mammalian embryo are derived from ______.
Which among the following is not the function of testes at puberty?
- formation of germ cells
- secretion of testosterone
- development of placenta
- secretion of estrogen
In the given Figure label the parts and mention their functions
- Production of egg
- Site of fertilisation
- Site of implantation
- Entry of the sperms
Capacitation occurs in:
Progesterone is secreted by ______.
Given below are the structural details of a human mammary gland:
- The glandular tissue in the breast has 15-20 clusters. of cells called alveoli.
- The milk is stored in the lumen of the alveoli.
- The alveoli join to form the mammary ducts.
- Mammary ampulla is connected to lactiferous ducts.
Choose the option that gives the correct detail of the human mammary gland.
Choose the odd one out from the group of terms given below and write the category for the remaining terms:
Write the specific location of the following:
Uterus
The figure given below is the human female reproductive system. Study the same and answer the following questions.
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- Label the guidelines 1 to 6 shown in the figure.
- What is the normal gestation period in human?
- Where are the sperms released during coitus?
- Write two important functions of part 2.
- Mention the technical term for the fixing of developing zygote to the uterine wall.
Which hormone facilitates contraction of fallopian tube and uterus to assist movement of sperms towards ampulla?
Statement I: The presence or absence of hymen is not a reliable indicator of virginity.
Statement II: The hymen is torn during the first coitus only.
In the light of the above statements, choose the correct answer from the options given below:
