seios
Seios, in Portuguese, is the plural of seio, meaning breast or bosom. In anatomical terms, a breast is the anterior projection of the chest composed of glandular tissue, fat, and connective tissue. Breasts contain mammary glands capable of milk production; the nipple and areola are the protruding parts through which milk is discharged via lactiferous ducts. The internal structure includes lobes, lobules, ducts, and supporting stroma, while size and shape vary among individuals.
Breast development typically begins at puberty under hormonal influence, primarily estrogen and progesterone. Breasts may enlarge
Common health considerations include benign conditions such as fibrocystic changes, cysts, and mastitis, as well as
Culturally, the term seios is used in everyday language to refer to the breasts, while in medical