A report on Breast

Morphology of human female breasts with the areola, nipple, and inframammary fold
Breast development in puberty is measured with the five-stage Tanner Scale
Breast with visible stretch marks
A baby breastfeeding
Conventional mastectomy (top); skin sparing mastectomy and latissimus dorsi myocutaneous flap reconstruction, prior to nipple reconstruction and tattooing (bottom).
Femen member participating in a protest
As is customary in her culture, a bare-breasted Himba woman of northern Namibia wears a traditional headdress and skirt
A Cretan snake goddess from the Minoan civilization, {{circa|1600}} BC
1825 oil painting entitled Tetuppa, a Native Female of the Sandwich Islands, by Robert Dampier

One of two prominences located on the upper ventral region of a primate's torso.

- Breast
Morphology of human female breasts with the areola, nipple, and inframammary fold

45 related topics with Alpha

Overall

A nipple, areola and breast of a female human

Nipple

11 links

A nipple, areola and breast of a female human
A human male nipple
Infant latched on to nipple.
Silicone teat or nipple, used for bottle feeding.
Duplessis's portrait of a semi-topless Marie Thérèse Louise of Savoy dates from 18th-century France.
A Namibian woman

The nipple is a raised region of tissue on the surface of the breast from which, in females, milk leaves the breast through the lactiferous ducts to feed an infant.

Estradiol, the major estrogen sex hormone in humans and a widely used medication.

Estrogen

6 links

Category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics.

Category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics.

Estradiol, the major estrogen sex hormone in humans and a widely used medication.
Reference ranges for the blood content of estradiol, the primary type of estrogen, during the menstrual cycle.
Steroidogenesis, showing estrogens at bottom right as in pink triangle.

They promote the development of female secondary sexual characteristics, such as breasts, and are also involved in the thickening of the endometrium and other aspects of regulating the menstrual cycle.

Approximate outline of development periods from childhood to early adulthood. Puberty is marked in green at right.

Puberty

5 links

Process of physical changes through which a child's body matures into an adult body capable of sexual reproduction.

Process of physical changes through which a child's body matures into an adult body capable of sexual reproduction.

Approximate outline of development periods from childhood to early adulthood. Puberty is marked in green at right.
Five Tanner stages of male genitalia. The Adolescent Period
Development of a boy from childhood to the end of puberty.
Boy at 11.3yo (prepuberal), 12.5yo, 14.9yo and 16.3yo (post puberal).
Facial hair of a male.
Tanner stages of puberty in females
Development of a girl from childhood to the end of puberty
Variations of the initial and final height of three boys from 12-years-old to the end of their growth spurt.
Two boys from 11.5 to 16.6 years old
Two girls from 8.0 to 14.5 years old
Temporary gynecomastia of a boy going through puberty.

In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sex organs.

Kittens nursing

Lactation

6 links

Lactation describes the secretion of milk from the mammary glands and the period of time that a mother lactates to feed her young.

Lactation describes the secretion of milk from the mammary glands and the period of time that a mother lactates to feed her young.

Kittens nursing
Lactating female coyote with visible teats
Milk secretion from a human breast
Breastfeeding (Correct Latch-On Position)
Breastfeeding a newborn baby
Breastfeeding of an older child

From the eighteenth week of pregnancy (the second and third trimesters), a woman's body produces hormones that stimulate the growth of the milk duct system in the breasts:

During the menstrual cycle, levels of estradiol (an estrogen) vary by 200 percent. Levels of progesterone vary by over 1200 percent.

Progesterone

5 links

Endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species.

Endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species.

During the menstrual cycle, levels of estradiol (an estrogen) vary by 200 percent. Levels of progesterone vary by over 1200 percent.
Micrograph showing changes to the endometrium due to progesterone (decidualization) H&E stain.
Steroidogenesis, showing progesterone among the progestogens in yellow area.
Progesterone levels across the menstrual cycle in normally cycling and ovulatory women. The horizontal lines are the mean integrated levels for each curve. The vertical line is mid-cycle.
A sample of progesterone.
The Marker semisynthesis of progesterone from diosgenin.
Stigmasterol to progesterone synthesis.
The Johnson total synthesis of progesterone.

One example of this is in breast tissue, where estrogens allow progesterone to mediate lobuloalveolar development.

Cross-section of the human mammary gland. 1. Chest wall

2. Pectoralis muscles

3. Lobules

4. Nipple

5. Areola

6. Milk duct

7. Fatty tissue

8. Skin

Mammary gland

4 links

Exocrine gland in humans and other mammals that produces milk to feed young offspring.

Exocrine gland in humans and other mammals that produces milk to feed young offspring.

Cross-section of the human mammary gland. 1. Chest wall

2. Pectoralis muscles

3. Lobules

4. Nipple

5. Areola

6. Milk duct

7. Fatty tissue

8. Skin
Cross-section of the human mammary gland. 1. Chest wall

2. Pectoralis muscles

3. Lobules

4. Nipple

5. Areola

6. Milk duct

7. Fatty tissue

8. Skin
Light micrograph of a human proliferating mammary gland during estrous cycle. Sprouting gland tissue can be seen in the upper left field (haematoxylin eosin staining)
Cross section of the breast of a human female
Dog
Cattle
Cat
Pig
Goat
Elephant

The mammary glands are arranged in organs such as the breasts in primates (for example, humans and chimpanzees), the udder in ruminants (for example, cows, goats, sheep, and deer), and the dugs of other animals (for example, dogs and cats).

Ptosis (breasts)

4 links

Severe ptosis
Stages of ptosis
Ptosis

Ptosis or sagging of the female breast is a natural consequence of aging.

Areola

4 links

A male areola
The difference between coloring of areolae.
Large areolae on a woman. Adult women have areolae of an average of 38.1 mm (1.5 in), but sizes range up to 100 mm (4 in) or greater.

The human areola (areola mammae, or ) is the pigmented area on the breast around the nipple.

Tanner stages of breast development.

Breast development

2 links

Complex biological process in primates that takes place throughout a female's life.

Complex biological process in primates that takes place throughout a female's life.

Tanner stages of breast development.

Breast development results in prominent and developed structures on the chest known as breasts in primates, which serve primarily as mammary glands.

A drawing of mastitis from the early 1900s

Mastitis

4 links

A drawing of mastitis from the early 1900s
An ultrasound image of puerperal mastitis
Mastitis localized on the underside of the breast, with a large area of inflammation.
Udder of a Roux du Valais sheep after a healed mastitis; one teat was lost due to the disease.
Serous exudate from bovine udder in E. coli mastitis<ref>{{cite journal | author = Kandasamy S, Green BB, Benjamin AL, Kerr DE | date = Dec 2011 | title = Between-cow variation in dermal fibroblast response to lipopolysaccharide reflected in resolution of inflammation during Escherichia coli mastitis | journal = J. Dairy Sci. | volume = 94 | issue = 12| pages = 5963–75 | doi = 10.3168/jds.2011-4288 | pmid = 22118085 }}</ref> at left. Normal milk at right.
Gangrenous mastitis in a dairy cow.
Cat suffering from mastitis

Mastitis is inflammation of the breast or udder, usually associated with breastfeeding.