Health Assessment Chp 17 Flashcards
(81 cards)
The breast is composed of (3 things)
Glandular tissue, fibrous tissue, including suspensory ligaments, and adipose tissue
What is glandular tissue and its purpose?
15-20 lobes radiating from the nipple and these are composed of lobules which contain clusters of alveoli that produce milk.
What is the tail of spence?
Cone shaped breast tissue that projects up into that axilla, close the pectoral group of axillary lymph nodes
The site of most breast tumors?
Upper outer quadrant
Where are the breast located?
Anterior to the Pectoralis major and serratus anterior muscles. Between the 2nd and 6th ribs and extending from the side of the sternum to the midaxillary line.
The breast lymphatic drains ___% of lymph into ____
75%, ipsilateral axillary nodes
Four groups of axillary nodes in the breast?
Central axillary nodes, pectoral (anterior), subscapular (posterior), lateral
Central axillary nodes
High up in the middle of the axilla, over the ribs and serratus anterior muscle. These receive lymph from the other three groups of nodes
Pectoral (anterior)
Along the lateral edge of the pectoralis major muscle, just inside the axillary fold.
Subscapular (posterior)
Along the lateral edge of the scapula, deep in the posterior axillary fold
Lateral group of lymph nodes
Along the humerus, inside the upper arm
From the central axillary nodes, drainage….
Flows up to the infraclavicular, and supraclavicular nodes.
A smaller amount of lymph drainage
Flows directly up to the infraclavicular group, or deep into the chest, or into the abdomen, or directly across the opposite breast
During embryonic life
Epidermal ridges or milk lines are present and curve down from the axilla to the groin bilaterally. The breast develops along the ridge over thorax, and the rest of the ridge atrophies. Occasionally a supernumerary nipple (extra nipple) persists and is visible somewhere along the track of the mammary ridge
At birth only breast structures present are
Lactiferous ducts within the nipple. No alveoli have developed. Little change occurs in puberty.
The onset of breast development occurs at an average age between
8&9 years for African American girls and by 10 in white girls. However, recent evidence shows an earlier onset of breast development in 7 year olds: 10.4% of white girls, 23.4% of non-Hispanic black girls and 15% of Hispanic girls
Early breast development is linked to
Greater body mass (BMI) ratings and reflects the rise in obesity in US children
Is it normal for one breast to grow faster than the other?
Yes, tenderness is common also
Tanner stages
- Preadolescent- only a small elevated nipple
- Breast bud stage- a small mound of breast and nipple develops; the aerial widens
- The breast and areole enlarge; the nipple is flush with the breast surface.
- The aerial and nipple from a secondary mound over the breast.
- Mature breast: only the nipple protrudes; the Areola is flush with the breast contour (the Areola may continue as a secondary mound in some normal women)
Tanner stages 2-5 takes an average of
3 years although the range is 1.5 to 6 years. During this time pubic hair develops, and axillary hair appears 2 years after the onset of pubic hair
The beginning of breast development precedes
Menarche (beginning of menstruation) by about 2 years.
Menarche occurs in breast development stage
3 or 4, usually just after peak of adolescent growth spurt around 12 years of age. This helps to assess the development of adolescent girls and increases their knowledge about their own development.
During pregnancy breast changes start
During the second month and are common early signs of pregnancy. Pregnancy stimulates the expansion of the ducal system and supporting fatty tissue and the development of true secretory alveoli. Thus the breast enlarge and feel more modular.
What happens to the nipples during pregnancy
They grow larger, darker, and more erectile