Milk line

Information about Milk line

The milk lines are two parallel lines, formed by thickenings of the epidermis) along the ventral surface of mammals of both sexes. They extend from the upper limbs (arms) to the lower limbs (legs) and are developed in the embryo. They give rise to the mammary glands and nipples but are otherwise usually not visible in the adult.

Milk lines in humans

In humans, milk lines appear in the seventh week of embryonic development. After initial development of the milk lines they go into remission.

See also





snort a milk line
Epidermis is the outermost layer of the skin. It forms the waterproof, protective wrap over the body's surface and is made up of stratified squamous epithelium with an underlying basal lamina.
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Mammalia
Linnaeus, 1758

Subclasses & Infraclasses
  • Subclass †Allotheria*
  • Subclass Prototheria
  • Subclass Theria

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Mammary glands are the organs that, in the female mammal, produce milk for the sustenance of the young. These exocrine glands are enlarged and modified sweat glands and are the characteristic of mammals which gave the class its name.
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nipple is an appurtenance from which a fluid emanates, in this instance breast milk, to nurture a mother's young.

Anatomy

In the anatomy of mammals, a nipple or mammary papilla
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Mammary glands are the organs that, in the female mammal, produce milk for the sustenance of the young. These exocrine glands are enlarged and modified sweat glands and are the characteristic of mammals which gave the class its name.
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breast refers to the upper ventral region of an animal’s torso, particularly that of mammals, including human beings. The breasts of a female mammal’s body contain the mammary glands, which secrete milk used to feed infants.
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nipple is an appurtenance from which a fluid emanates, in this instance breast milk, to nurture a mother's young.

Anatomy

In the anatomy of mammals, a nipple or mammary papilla
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Teat is an alternative word for the nipple of a mammary gland, in humans referred to as a breast, from which milk is discharged. Similarly in cows, goats, etc., it is the projection from the udder through which milk is discharged. The medical Latin term for teats is papilla mammae.
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An udder is the mammary organ of female cattle and some other mammals, including goats and sheep.

A cow has one udder and four teats or nipples, while goats have two teats on their udders. A cow's udder can hold up to around 40 litres (10.
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Lactation describes the secretion of milk from the mammary glands, the process of providing that milk to the young, and the period of time that a mother lactates to feed her young.
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Milk is an opaque white liquid produced by the mammary glands of female mammals (including monotremes). Mammary glands are highly specialized sweat glands. The female ability to produce milk is one of the defining characteristics of mammals.
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