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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
How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?
Describe the development of a fertilized ovum upto implantation.
In female, after how much time after fertilization, does the fertilized egg get implanted in the
uterine wall?
Differentiate between Identical twins and fraternal twins.
Explain with examples types of asexual reproduction in unicellular organisms.
After puberty human female shows cyclic changes in her reproductive system. Explain structural and hormonal changes in the uterus.
(OR)
Give reasons :
(1) Scrotal sac serves as thermoregulator.
(2) Corpus luteum gets converted into corpus albicans in absence of fertilization.
(3) Missing of menses is the first indication of pregnancy.
(4) Surgical sterilization is a permanent method of birth control. (5) Human egg is microlecithal.
The diagram given below represents a system in the human body. Stud the diagram and answer the following questions: 
Mention the number and the name of the part involved in fertilization and implantation from the above diagram.
Choose the correct answer:
Cervix is a part of ________________
Why is zona pellucid retained around the egg till it reaches the uterus?
Write the functional activity of the following structure:
Inguinal canal
Multiple Choice Question:
Corpus luteum in mammals occurs in
Hormones secreted by the ovary of the female reproductive system.
The pair of thin folds present inner to the labia majora is ____________.
Primordial follicle cells undergo mitotic division to produce ______.
Which of the following is ectodermal in origin?
| (i) | Heart |
| (ii) | Sweat glands |
| (iii) | Adrenal medulla |
| (iv) | Middle ear |
| (v) | Urinary bladder |
| (vi) | Dermis of skin |
Stratum germinativum is an example of which kind of epithelium?
Which among the following diseases is not sexually transmitted?
What is parturition?
The ______ is also called the womb.
Clitoris is equivalent to the male penis.
