Breast

• BREAST

  • a pair of mammary glands located on the anterior chest wall

  • the milk-producing gland of women

  • Anatomic Breast Landmarks And Their Position In The Thorax

  o extending vertically from the 2nd to the 6th rib and laterally from the sternal border to

  the axilla
• During pregnancy – pigmentation and enlargement
• Corpus luteum and placenta – can cause breast sorenesss during pregnancy
• Male Concerns

  o composed of a well-developed areola and small nipple that has immature tissue

  underneath

  o Gynecomastia
• Nipples

  o round, hairless pigmented protrusion of erectile tissue approximately 0.5 to 1.5 in

  diameter

  o located at the center of the breast
• Lactiferous ducts

  ▪ there are 12 to 20 minute openings on the surface of the nipple
• Areola

  o a pigmented area surrounding the nipples approximately 2.5 to 10cm in diameter

  o montgomery's tubercle

  ▪ appears rough because it contains modified sebaceous (oil) glands

  ▪ helps lubricate the nipple, lactation
• Axilla

  o the small hollow portion beneath the arm where it joins the body at the shoulders

  o also called the armpit
• Pectoral Nodes (anterior)

  • located along the lower border of the pectoralis major inside the

  anterior axillary fold
• ▪ Subscapular Nodes (posterior)

  • located along the lower border of the pectoralis major inside the

  anterior axillary fold
• ▪ Lateral Nodes (brachial)

  • located along the upper humerus