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Reproductive system > Breast anatomy > Flashcards

Breast anatomy Flashcards

1
Q

What are the functions of breasts?

A

Secondary sexual feature of females

Source of nutrition for neonates

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2
Q

What are general features of the breast?

A

Modified and highly specialised sweat glands
No special capsule or sheath
Present in males and females but much more developed in females

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3
Q

What determines breast size and shape?

A

Genetic factors
Racial factors
Dietary factors

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4
Q

What are the borders of the breast?

A

Vertically - 2nd/3rd rib to 6th rib

Transverse - Sternal edge to midaxillary line

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5
Q

What is the axillary tail?

A

A small part of the breast that may extend to the axillary fossa

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6
Q

What is the function of the retromammary bursa?

A

Allows a degree of movement

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7
Q

What does the breast lie over?

A

Top 2/3rds over pecoral fascia/pec major

Bottom third rests on serratus anterior

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8
Q

What keeps the breast attached to the dermis?

A

Suspensory ligament of cooper

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9
Q

What is the nipple?

A

The prominence of the breast

What is the areola?

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10
Q

What is the areola?

A

Pigmented area around the nipple

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11
Q

Around how many lobules are in each breast?

A

15-20

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12
Q

What drains each lobule?

A

Lactiferous duct

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13
Q

What is the lactiferous sinus?

A

Dilated part of the lactiferous duct

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14
Q

What is contained within the nipple?

A

Collagenous dense connective tissue
Elastic fibres
Bands of smooth muscle

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15
Q

What is found within the areola?

A

Numerous sweat and sebaceous glands which secrete oily material to provide lubricant for the nipple and areola

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16
Q

What is gynecomastia?

A

Development of the breast in males

17
Q

What is polymastia?

A

An extra breast

18
Q

What is polythelia?

A

An extra nipple

19
Q

What is the blood supply of the breast?

A

Thoraco-acromial artery
Lateral thoracic artery
Internal mammary artery

20
Q

Where does lymph from the breast drain to?

A

Most drains to axillary lymph nodes
Some may drain directly to supraclavicular nodes or inferior cervical nodes
Lymph from medial quadrants drains to parasternal nodes or the opposite breast

Reproductive system (26 decks)

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