Physiology Of Breast And Lactation Flashcards
The breast is a mass of what tissues?
Glandular, fatty and fibrous
The breasts lie over which muscles?
Pectoral muscles
The breast is attached to the chest wall by?
Cooper’s suspensory ligament
What layer of tissue surrounds breast glands?
Fatty tissue
Glandular tissue of the breast houses?
The lobules and ducts
The ducts widen to form ____ close to the nipples.
Sacs
Composition of the breast
Lobes/Lobules
Acini/Alveoli
Ductules/Ducts
Nipple
Areola
Connective tissue
Fat
Essels
There are how many lobules in the female breast?
15-20
Lobules are made up of?
Acini or alveoli cells
The basic unit of the breast is?
Alveolus
Alveolus is surrounded by?
Myoepithelial cells and connective tissue
Each ductule merges into?
A larger duct
Each duct has how many openings?
9 to 10
Breast development starts from?
6/52 of fetal life
Female breast begins growing?
At puberty (ages 10-11)
What precedes breast development (thelarche) during puberty?
Pubarche (growth of pubic hair)
Development of the breast during puberty is a response to?
Hormonal changes in puberty (estrogen, progesterone and growth hormones)
Effect of Estrogen on breast development?
Proliferation and differentiation of ducts
Formation of ductules
Effect of Progesterone on Breast development?
Development of lobe, lobules and alveoli
Growth of breast continues until?
Onset of menses 1-2 years afterwards
Effects of hormones on development of breasts are more pronounced when?
During menses
The effects of gonadal hormones on breast development peaks at _______ and regresses afterward?
Late luteal phase
Cyclical changes are seen in breast and are more pronounced during?
Menses and pregnancy
