B. Using the on-line medical dictionary here: http://www.medicinenet.com/ (or your preferred medical dictionary) ​ ​ thoroughly define the following:

The definitions from medical dictionaries are immediately after the word. The definitions under each word after the “-” are what I tried to define before looking up the definition. I just wanted to try and define it first to test myself after watching the videos and taking notes.

Adipose Tissue - Fatty, tissues made of mainly fat cells such as the yellow layer of fat beneath the skin. ​ - A layer of fatty tissue that appears -like or like cotyledons on the basal plate of the placenta with a typical yellow color.

Pectoralis muscle - Muscles of the “Anterior chest” (the front of the chest), also called pecs. ​ - The muscle directly beneath the that connect from the shoulder to the sternum, basically the chest.

Lobe - fibrous tissue within the containing 15 to 20 glands. Each of these have smaller lobules, ​ ducts, and sacs that produce .

Areola - the small darkened area around the of the breast. ​ - The circular, pigmented skin surrounding the nipple. The gets darker during so the newborn can locate the nipple faster and easier since they can’t see very well.

Nipple - the pigmented projection on the surface of the chest in the male and the breast in the . In ​ the mature female, ducts that conduct milk from the mammary glands to the surface of the breast exit through the nipple. The surrounding flat area of pigmentation is the areola.

- An extended, round, and hard segment of the breast located in the middle of the areola, and in the middle/front of the breast. It is used for secreting and what suckle on to nurse.

Opening of the lactiferous - (I couldn’t find the definition for this so I’m making my own based off ​ the videos) ducts connected to the lactiferous sinus and leading out to the nipple pores to release the milk that is accumulated within the lactiferous sinus. A very tiny segment between the sinus and nipple pores.

Lactiferous sinus - an expansion in a at the base of the nipple in which milk ​ accumulates.

- An enlarged portion of the lactiferous duct that stores the milk before being secreted to and out of the nipple.

Lactiferous duct - any of the milk-carrying ducts of the that open on the nipple. ​ - Tubes or ducts connecting from the mammary glands to the lactiferous sinus to transfer milk.

Lobule - A small lobe ​ - A smaller section of the lobe, there are 15-20 of these within one lobe. Each lobule has a lactiferous duct, myoepithelial cells, etc.

Mammary glands - One of the half moon shaped glands on either side of the adult female chest, which ​ with fatty tissue and the nipple make up the breast. Within each mammary gland is a network of sacs that produce milk during and send it to the nipple via a system of ducts. An in a woman's breast that produces milk to feed a baby.

- The female breasts. Also, glands within the breasts that produce and secrete milk.

Myoepithelial cells - Large contractile cells of epithelial origin which are located at the base of the ​ secretory cells of various glands (as the salivary and mammary glands).

- Epithelial cells are the skin cells or outer layer (or superficial) cells of any tissue. Myo has to do with anything contracting or muscles. Myoepithelial cells then are the epithelial cells that surround the mammary glands and lobes. They have the ability to not only surround and protect the glands, but also contract, helping with the process of milk ejecting from the glands to the ducts, and out the nipple.

Connective tissues - tissue consisting of and elastin to form the structure of the body. They ​ surround the lobes along with the .

Cooper’s ligaments - are bands of tough, fibrous, flexible connective tissue that shape and support your ​ breasts, giving it structural integrity.

- Strong , elastic ligaments connected to the connective tissue within the breasts give the breasts their shape and “hold them up.”

Pectoralis major - a large fan-shaped muscle that forms the structure of either side of the surface of the ​ chest wall.

Nipple pores - pores within the nipple that transfer milk from the inside of the breast to the outside. ​ Montgomery glands - a number of sebaceous glands forming small rounded projections from the surface ​ of the areola of the breast; they enlarge during pregnancy and during lactation to secrete a substance presumed to provide resistance to chapping.

- Montgomery glands (or tubercles) are tiny pores on the areola that secrete liquid to lubricate the nipple and prevent infection, dryness, cracked and bleeding . They can be seen with the naked eye depending on the woman and her anatomy.

Lipoid fluid - an oily substance/fluid that is secreted from the Montgomery glands to prevent the nipples ​ from getting dry or cracked.

- This oily liquid is secreted out of the Montgomery tubercles and it even has a distinct odor that the newborn recognizes. They are attracted to this smell. This liquid helps lubricate the nipples. Mechanoreceptors - a neural end organ that responds to a mechanical stimulus (such as a change in ​ pressure).

- Receptors that are stimulated/triggered by pressure like fundal massage, nipple stimulation, nursing or breast massage to stimulate lactation. These can also be triggered by the mother hearing a baby cry, or seeing a photo of the baby.

Hypothalamus - the area of the brain that secretes substances that influence pituitary and other gland ​ function and is involved in the control of body temperature, hunger, thirst, and other processes that regulate body equilibrium.

Oxytocin - A made in the brain that plays a role in childbirth and lactation by causing muscles ​ to contract in the uterus and the mammary glands in the breast.

- A hormone secreted by the that contributes to the growth of the mammary glands, uterine contractions, bonding between the mother and baby, and lactation.

Pituitary - an endocrine gland, the size of a pea, that sits in a small, bony cavity at the base of the brain ​ whose secretions control the other endocrine glands and influence growth metabolism, and maturation.

- Pituitary is a tiny gland within the brain right beneath the hypothalamus that produces and secretes to send to the rest of the body. It has an anterior and posterior gland, that serves different functions.

Prolactin - a hormone secreted by the pituitary gland that stimulates lactation (milk production). ​