Unit #9

Question 1

What is Lactation?

Answer 1

Production and secretion of milk

Question 2

is important to the survival, development, and
growth of mammalian species

Answer 2

Lactation

Question 3

Mammary Gland Development

Answer 3

Hormones help the mammary glands grow and develop so they can make milk

Question 4

Milk synthesis

Answer 4

Hormones are like the switch that turns on the milk-making machines inside the factory.

Question 5

Suckling

Answer 5

When the babies feed, it’s like placing an order for milk. This sends a signal to the hormones, which are like workers, to pack and send the milk to the baby.

Question 6

How many stages of Lactation?

Answer 6

3

Question 7

What is the first stage of Lactation

Answer 7

mammogenesis

Question 8

What is the second stage of Lactation?

Answer 8

Lactogenesis

Question 9

What is the third stage of Lacatation

Answer 9

Galactopoiesis

Question 10

What are mammary ducts?

Answer 10

the tubes in her breast

Question 11

What is cell proliferation?

Answer 11

Tiny building blocks in our body that multiply

Question 12

What is Mammaogenesis?

Answer 12

It is the process where a woman’s breast gets bigger

Question 13

What hormone helps with Mammary gland development?

Answer 13

Lactogenesis

Question 14

What does Alveoli do?

Answer 14

Tiny sacs in the mammary glands where milk is produced and stored

Question 15

How long does mammogenesis last

Answer 15

Puberty –> until she gets pregnant

Question 16

What does Estradiol do during lactation?

Answer 16

It is a hormone that acts as a signal for the milk tubes

Question 17

What is Duct development

Answer 17

Milk tubes in the breast start forming

Question 18

What is Estradiol –> Duct development

Answer 18

The hormone that acts like a signal for the milk tubes in the breasts to start forming

Question 19

When does the preparation for milk production start?

Answer 19

Early fetal development

Question 20

Every single month, the woman’s body produces estrogen and progesterone

Answer 20

Which helps the development of Mammal glands

Question 21

When does mammogenesis end?

Answer 21

The first pregnancy

Question 22

What is Lactogenesis

Answer 22

process of making milk

Question 23

When does lactogenesis start?

Answer 23

last trimester of pregnancy

Question 24

What does prolactin do?

Answer 24

Secretes milk

Question 25

What is Lactogenesis 1

Answer 25

milk synthesis

begins in the last trimester in pregnancy

Question 26

What is the primary function of the alveoli in the mammary gland?

Answer 26

Stores Milk

Question 27

What is the term for the growth and development of the mammary gland in preparation for milk production?

Answer 27

Mammogenesis

Question 28

which hormone is primary responsible for duct development in the mammary gland

Answer 28

Estradiol

Question 29

What does proliferation mean?

Answer 29

How long the milk is

Question 30

What three hormones stimulate mammary duct proliferation in high concentrations from puberty to the first pregnancy?

Answer 30

Progesterone, Prolactin, and GH (IGF-1) [2] (growth hormones)

Question 31

When does the final mammary development occur?

Answer 31

First pregnancy (when the baby is identified)

Question 32

What hormones are essential for the mammary gland to synthesize milk during the first pregnancy?

Answer 32

Prolactin, Placental Lactogen

Question 33

What is the definition of Lactogenesis?

Answer 33

the start of producing milk

Question 34

When does Lactogenesis begin?

Answer 34

Third trimester

Question 35

What two processes occur during Lactogenesis I?

Answer 35

Mammal cell differeation: The cells in the breast tissue start to change and become specialized for milk production and Increase enzyme activity: increase enzymes (Chemical reactions) involving milk production

Question 36

What two hormones induce cell division in the mammary gland during Lactogenesis I?

Answer 36

Insulin, growth factors (GH → IGF 1)

Question 37

what hormone stimulates milk production during Lactogenesis I?

Answer 37

Prolactin

Question 38

What event initiates Lactogenesis II?

Answer 38

Reduction of progesterone

Question 39

What is the primary function of Oxytocin during Lactogenesis II?

Answer 39

Muscle contractions push out the milk
causes milk ejection

Question 40

What stimulates the release of Prolactin during Lactogenesis II?

Answer 40

Mlik is ejected because the milk is leaving, causing an increase of production

Question 41

What is the main reason newborns are entirely dependent on their mother’s milk?

Answer 41

They cannot digest solids, and they are born without antibodies

Question 42

Why are ruminant newborns considered agammaglobulinemic?

Answer 42

No immune factors are exchanged in utero; the blood-placenta barrier

Question 43

List three essential components or effects of colostrum.

Answer 43

Antibodies: whole of antibodies that strengthen the immune system
Laxative effects: helps the baby pass their first stool
Nutrient density: high in nutrient

Question 44

What is Galactopoiesis?

Answer 44

The maintenance of milk production

Question 45

What is Colostrum?

Answer 45

“liquid gold” is the first milk that is produced

Question 46

What hormones are in Mammogenesis

Answer 46

Progesterone, Prolactin, and growth hormones and Estradiol

Question 47

What does oxytocin do during Lactogenesis II?

Answer 47

Contracts the breast for the milk to come out

Question 48

Explain how Lactogenesis II occurs.

Answer 48

The baby sucks on her mom’s breast, which then tells the brain to release oxytocin which contracts the breast to produce milk, and prolactin occurs when milk is ejected because it needs to produce more milk

Question 49

What will affect the Colostrum?

Answer 49

Genotypes, Age of parents, mom health status, season of calving, milk yield, and nutrition

Question 50

How does cortisol help with Lactogenesis 1?

Answer 50

The alveoli are immature, during the first pregnancy cortisol helps mature the alveoli