Do humans have a milk line?

The embryonic milk line is the line of potentially appearing breast tissue as observed in many mammals. In humans, the embryonic milk line extends bilaterally from a point slightly beyond the axillae on the arms, down the chest and the abdomen toward the groin.

Where is the milk line located?

In humans, the embryonic milk line extends bilaterally from a point slightly beyond the axillae on the arms, down the chest and the abdomen toward the groin. It is generally thought to end at the proximal inner sides of the thighs, although supernumerary nipples have been described on the foot.

Where is the mammary ridge?

In mammalian embryos, a ridge extending from the axilla to the groin. The breasts arise from this ridge. In humans, only one breast normally develops on each side, although additional nipples occasionally develop along this ridge line.

What is the pathway of milk from the mammary glands?

Your breasts contain small sacs called mammary glands. These glands make breast milk. The milk travels from the mammary glands through tubes in your breasts called ducts. The milk collects in an area called the sinus.

Where do milk lines form in the human body?

In humans, milk lines form as thickenings of the epidermis of the mammary ridge, along the front surface of both sexes of mammals. Milk lines appear in the seventh week of embryonic development before human sexual differentiation, which explains why male humans have nipples.

When do milk lines develop in a fetus?

Milk lines, also known by the technical term ventral epidermal ridges, are precursors to the mammary glands and nipples . An embryo’s breasts begin to develop during the fourth week of the gestation period.

Who is a breast cancer survivor with milk lines?

Pam Stephan is a breast cancer survivor. Doru Paul, MD, is board-certified in internal medicine, medical oncology, and hematology. Milk lines, also known by the technical term ventral epidermal ridges, are precursors to the mammary glands and nipples .

What is the milk line in a milking machine?

1. the line of thickened epithelium in the embryo along which the mammary glands are developed. 2. the metal tube in a milking machine along which the milk, after extraction from the cow, passes to the storage vat.