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Questions and Answers
Which muscle does the breast rest anteriorly on?
Which muscle does the breast rest anteriorly on?
- Serratus anterior
- Pectoralis major (correct)
- Deltoid
- Trapezius
Where does the breast extend from on the thoracic wall?
Where does the breast extend from on the thoracic wall?
- Sternum to midaxillary line (correct)
- Midaxillary line to spine
- Midclavicular line to spine
- Sternum to spine
What is the potential space between the deep pectoral fascia and superficial fascia called?
What is the potential space between the deep pectoral fascia and superficial fascia called?
- Bursa
- Suspensory ligaments
- Axillary tail
- Retromammary space (correct)
What is the function of the suspensory (Cooper's) ligaments in the breast?
What is the function of the suspensory (Cooper's) ligaments in the breast?
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Where may the nipple lie in relation to the intercostal spaces?
Where may the nipple lie in relation to the intercostal spaces?
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Study Notes
Breast Anatomy
- The breast rests anteriorly on the pectoralis major muscle.
- The breast extends from the second rib to the sixth or seventh rib on the thoracic wall.
- The potential space between the deep pectoral fascia and superficial fascia is called the retromammary space.
- The suspensory (Cooper's) ligaments help support the breast and maintain breast shape. They run from the skin to the deep fascia of the breast, helping to prevent sagging.
- The nipple typically lies between the fourth and fifth intercostal spaces.
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