The breast physiology structure diagram show!
Breast mainly from the ceruminous gland ketone body, catheter, adipose tissue and the fiber organize etc. composing.It is internal the structure be a like small tree which pours growth.(Descend figure a)
The breast ceruminous gland ketone body constitutes to°from 15~20 ceruminous gland leaf, fronds, each ceruminous gland leaf, frond is divided into some glandular lobules, and each glandular lobule constitutes to°from 10~100 acinuses again.These acinuses closely arrange surroundings at the small mammary ridge palatine canal, the openings of acinus and small mammary ridge palatine canal connect with each other.Many small mammary ridge palatine canals gather together into a leaflet mammary ridge palatine canal, several mammary ridge palatine canals again gather together further one radical the whole mammary gland catheter of ceruminous gland leaf, frond, again lactiferous ducts.
The lactiferous ducts is total 15~20 radicalses, take nipple as center to present to project form alignment, gather together at the areola mammae, open mouth at the nipple and lose the mammary ridge pore, porus at be called.The lactiferous ducts is more narrow in the nipple, greatly be called a lactiferous sinuses for the ampulla, bulb after its Peng, there is the action of storage human milk.The openings of mammary gland catheter is a stratified squamous epithelium cell, narrow place in order to move form epithelium, the ampulla, bulb following all levels catheter is a pair of stratum, stories columnar epitheliums or simple columnar epithelium, eventually the end catheter near acinus is a cuboidal epithlium, the cuboidal epithlium of the acinus inner pad.
