- published: 14 Jan 2015
- views: 12591771
The breast is the upper ventral region of the torso of a primate, in left and right sides, which in a female contains the mammary gland that secretes milk used to feed infants.
Both men and women develop breasts from the same embryological tissues. However, at puberty, female sex hormones, mainly estrogen, promote breast development, which does not occur in men, due to the higher amount of testosterone. As a result, women's breasts become far more prominent than those of men.
During pregnancy, the breast is responsive to a complex interplay of hormones that cause tissue development and enlargement in order to produce milk. Three such hormones are estrogen, progesterone and prolactin, which cause glandular tissue in the breast and the uterus to change during the menstrual cycle.
Each breast contains 15–20 lobes. The subcutaneous adipose tissue covering the lobes gives the breast its size and shape. Each lobe is composed of many lobules, at the end of which are sacs where milk is produced in response to hormonal signals.
To what do you not drive
Mortal hearts
Accursed hunger for gold?
Cheaply bought, but deadly sold
With new light they shine on through
On fields of shredded goals
Reap crop of clinging hope
Harvest our brave new world
Ancient woe, be gone
Foul illusions of better life
Compared to what, I ask
Does this truth of life coerce?
Juxtaposed they are not