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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. Study the following diagram and answer the following questions.
(i) Study the following statements regarding structure of mammary gland. (i) contains variable amount of fat. (ii) It is modified sweat glands. (iii) Made up of glandular tissue. Choose correct option regarding correct statements given above. (a) i and ii (b) i, ii and iii (b) ii and iii (d) only iii(ii) Mammary gland is divided into_______ mammary lobes. (a) 20-22 (b) 15-20 (c) 22-25 (d) 130(iii) Choose the correct option regarding path of duct in the mammary gland. (a) mammary lobes → lactiferous duct → mammary tubules → Mammary duct → Mammary ampulla → Alveoli (b) lactiferous duct → mammary lobes → mammary tubules → Mammary duct → Mammary ampulla → Alveoli (c) Alveoli → mammary ampulla → mammary duct → Mammary tabule → lactiferous duct → mammary lobes (d) Mammary lobes → mammary tabules → lactiferous duct → Mammary ampulla → mammary duct(iv) Mammary glands are present above the _______ muscles. (a) Pectoralis minor muscle (b) Pectoralis major muscle (c) Intra - Inter-intercostal muscles. (d) Extra - Intor-intercostal muscles

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(i) (b) i, ii and iii (ii) (b) 15-20 (iii) (d) Mammary lobes → Alveoli → Mammary tubues → Lactiferous duct → Mammary ampulla → Mammary duct. (iv) (d) Pectoralis major muscle.