| Areolar glands | |
|---|---|
 The small bumps surrounding the nipple are areolar glands. | |
| Details | |
| Function | Lubricatenipple, promotebreastfeeding |
| Identifiers | |
| Latin | glandulae areolares |
| TA98 | A16.0.02.013 |
| TA2 | 7107 |
| FMA | 58090 |
| Anatomical terminology | |
Areolar glands, also known asglandulae areolares,Montgomery glands, andtubercula areolae, are 10-15 elevations found on theareola. They are usually arranged in a circle around the nipple, and can be particularly visible when the nipple is erect. Their role is to promote adequatebreastfeeding of the infant.
They aresebaceous glands, which secretesebum oil that is afree fatty acid onto the skin that lubricates the nipple when breastfeeding, protects the skin, and provides some air tightness between the infant's mouth and the nipple.[citation needed] They also emit odor compounds into the air that attract babies.[1]
In addition, a study of 121white mothers found that higher numbers of areolar glands on the breasts (commonly known as AG number) wascorrelated with infants gaining weight faster and lactation beginning faster.[2]
A meta-analysis shows thatodor compounds emitted from lactating breasts reduced arousal states in active newborns, increases arousal states in sleepy newborns, and causes babies to turn their heads towards the breast, though the source of these effects were not strongly identified. A targeted study of 16 infants based on these observations has shown that these effects can be induced experimentally through a researcher directing a baby with areolar gland scent on a stick. Additionally, areolar gland scents cause these effects more strongly than milk or sebum odors.[1]
Areolar glands are round bumps found in theareola, and sometimes on thenipple.
The tubercles become more pronounced when the nipple is erect, and duringpregnancy. The number of glands can vary greatly, usually averaging from 4 to 28 perbreast.[3]
Areolar glands make oily secretions (lipoid fluid) that keep the areola and the nipple lubricated and protected.[citation needed]
Volatile compounds in these secretions may also serve as an olfactory stimulus for newborn appetite.[1]
Areolar glands, especially during pregnancy and lactation, emit odors that reliably cause newborn babies to face the breast and locate the nipple. Cleaning the breast or otherwise masking these scents makes it harder for newborns to find the nipple, and to get an important first drink of immunoprotectivecolostrum.[1]
They can become exposed and raised when the nipple is stimulated. The skin over the surface opening is lubricated and tends to be smoother than the rest of the areola.
Areolar glands may secrete excessive amounts of oil.[4] This is a neutral condition that rarely represents any underlying problem, unlikethe spontaneous flow of milk from the breast.[4]
Areolar glands may also be called glands of Montgomery, or Montgomery tubercles. They are named after Dr.William Fetherstone Montgomery (1797–1859), anIrishobstetrician who first described them in 1837.[5][6]
