PTG 105- Exam 3- Lecture 19 - 1

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What are milk lines?

mammary ridges or paired ectodermal theckenings that devlop in the 4th week of gestation
What germ layer do milk lines develop from?

Ectoderm
Milk lines disappear, except for at one spot, which is called:

fourth intercostal space
What is the it called when the mammary ridges begin to proliferate?

The primary mammary bud
What is the primary mammary bud?

The tissue when the mammary ridges begin to proliferate
What happens to primary bud of the mammary ridges after formation?

They yeild secondary buds that eventually develop into mammary lobules and then adult breasts
The adult breasts form from what?

Primary mammary ridges
At birth how many lobes of glandular tissue are present in the breast?

15-20 lobes
What does each glandular lobe of the breat contain at birth?

Lactiferous duct
In males what leads to involution of the mammary glands?

Testosterone
What are the five components of the breast tissue?
- Supportive ligaments
- Ampula
- Lactiferous ducts
- Gland lobules
- Fat
A lobe of the breast is made up of what compoenents?
- muliple acini glands connected to ducts
- Ducts are connected to an ampule
- the ampule leades to the nipple
What part of the breast carries milk to the nipple?

The ampule
The ducts carry milk from where to where?

The acini to the ampule
A lobule is:

multiple acini glands
Breast tissue is ________ until puberty.

Quiescent
What happens to breast tissue at puberty?
- Rapid growth
- Deposition of fat
- elongation of the ductual system
When is breast development finished?

By age 20
What causes rapid growth, ductal elongation, and fat deposition during puberty?
- Estrogens
- Progesterone
- Prolactone
- GH
When do breast develop function al maturity?

During pregnacny
What is functional maturity of the breast?

lobules aquire secretory function
What causes functional maturity to occur in the breasts?
- Progesterone
- Estrogens
- Prolactin
- Placental lactogen
Mastitis is defined as:

Inflammation of the breast
What is inflammation of the breast

Mastitis
What are Benign neoplasms of the breast?
- Fibroadenoma
- Papilloma
Fibroadenom and papilloma have what in common?

They are both benign
What are the type of Malignant neoplasms of the breast?
- Lobular carcinoma
- Ductual carcinoma
What are the two main type sof breast cancer?
- Lobular carcinoma
- Ductual carcinoma
What are the clinical presentations of breast disease?
- Pain
- Palpable mass
- Nipple discharge
- Mammographic abnormality

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kyleannkelsey

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PTG 105- Exam 3- Lecture 19 - 1

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PTG 105- Exam 3- Lecture 19 - 1

Updated

2013-04-10T00:09:40Z

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