Lesson 3A (Part 1)

Question 1

What do breast lie over?

Answer 1

The pectoral muscles

Question 2

How are breasts attached to the pectoral muscles?

Answer 2

By a layer of connective tissue

- fascia

Question 3

What makes up breasts? (4)

Answer 3

1. Milk-producingmammary glands
2. Extensive supporting tissues
3. Adipose tissue
4. Coopers suspensory ligaments

Question 4

Coopers suspensory ligaments

Answer 4

Ligaments that help support the glandular and connective tissues of the entire structure, anchoring them to the coverings of the underlying pectoral muscles

Question 5

What does each breast consist of?

Answer 5

Several lobes separated by septa (walls) of connective tissue

Question 6

What does each lobe consist of?

Answer 6

Lobules

Question 7

What do lobules contain?

Answer 7

Connective tissues in which are embedded in the pouches of milk-secreting cells

Question 8

What is another word for the pouches of milk-secreting cells?

Answer 8

Alveoli

Question 9

How are the alveoli arranged?

Answer 9

Into grape-like clusters around the tiny ductule

Question 10

Where do you find myoepithelial cells?

Answer 10

Present around the outside of the alveolus

Question 11

What do myoepithelial cells do?

Answer 11

Contracts slightly, as if it were a muscle cell, thus squeezing milk out into the secretory duct

Question 12

What do the ductules from the various lobules unite to form?

Answer 12

Singlelactiferous ductfor each lobe

Question 13

How many singlelactiferous duct are therefor each lobe?

Answer 13

15-20 in each breast

Question 14

TDLU

Answer 14

Terminal ductolobular unit

Question 15

What is the number one area where cancer forms?

Answer 15

Terminal ductolobular unit

Question 16

What does the terminal ductolobular unit contain? (2)

Answer 16

1. Lobule

2. Ductal

Question 17

How is the lactiferous sinuses positioned?

Answer 17

To be squeezed by the suckling motion of a baby’s jaws during breastfeeding

Question 18

What do sinuses act as?

Answer 18

Little pumping chambers that help move milk out of the breast

Question 19

What does each of the main ducts do?

Answer 19

Terminates in a tiny opening on the surface of the nipple

Question 20

What is the function of the lactiferous sinuses?

Answer 20

When an infant is properly latched on to the breast, its jaws squeeze the lactiferous sinuses rhythmically, thus pumping milk out of the breast and into the back of the infant’s mouth

Question 21

What are nipples bordered by?

Answer 21

Areola

Question 22

Areola

Answer 22

Circular pigmented area

Question 23

What does the areola contain?

Answer 23

Numerous sebaceous glands

- small nodules under the skin

Question 24

What is another name for numerous sebaceous glands?

Answer 24

Montgomery’s tubercles

Question 25

What do the areolar glands produce?

Answer 25

Sebum

Question 26

What does sebum do?

Answer 26

Helps to reduce irritating dryness of the areolar skin associated with nursing
- helps with moisturizing

Question 27

What do areolar secretions contain (other than sebum)?

Answer 27

Pheromones

Question 28

What do pheromones do?

Answer 28

Enhance the mother/infant social bond

Question 29

What is the function of the mammary glands?

Answer 29

Lactation

Question 30

Lactation

Answer 30

The secretion of milk for the nourishment of a newborn infants