1. Tardigrade
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  3. Biology
  4. Milk secreted from the cells of the alveoli of mammary lobes reach nipple through lactiferous duct (L), mammary duct (M), mammary tubule (T) and mammary ampulla (A) in the following order:

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Q. Milk secreted from the cells of the alveoli of mammary lobes reach nipple through lactiferous duct (L), mammary duct (M), mammary tubule (T) and mammary ampulla (A) in the following order:

Human Reproduction

Solution:

Mammary glands or breasts are modified sweat glands that lie over the pectoral muscles. Each breast has a broad multiporous tip called nipple for the release of milk. A circular pigmented area called areola lies below it. Each breast conatains 15-20 glandular lobes separated from one another by dense connective tissue and adipose tissue. Each lobe is further made of a number of lobules having glandular or secretory alveoli. The cells of alveoli produce milk which is stored in the cavities or lumens of alveoli. Alveoli open into mammary tubules and them into mammary ducts. Mammary ducts form a mammary ampulla from which a lactiferous duct develops. Each lobe produces a separate lactiferous duct. The various lactiferous ducts open at the nipple by separate pores.