Breast Anatomy and Physiology

What is the shape of the projection that is present on the breast?

What is the name of the pigmented area surrounding the nipple?

Which of the following statements is true about the breast skin?

Which feature distinguishes the nipple from other parts of the breast?

What function is associated with the areola of the breast?

What is the vertical extent of the breast base?

Which muscles lie deep to the breast?

What is the horizontal extent of the breast?

Which statement about the breast's base is true?

Identify the incorrect relation of the breast to the surrounding structures.

Breast Anatomy

The breast extends vertically from rib 2 to rib 6, and horizontally from the sternum to the midaxillary line
The breast is positioned deep to the pectoralis major and serratus anterior muscles.
The breast is covered by skin and contains a conical projection called the nipple, which is surrounded by a pigmented area called the areola.
The breast is innervated by intercostal (2-6) and supraclavicular nerves, making it very sensitive.

Breast Blood Supply

The breast receives arterial blood supply from various branches of the axillary artery:
- Superior thoracic artery
- Thoracoacromial artery
- Lateral thoracic artery
- Subscapular artery

Breast Lymphatic Drainage

Lymphatic drainage from the nipples, areola, and lobules of the breast initially flows into a subareolar lymphatic plexus.

Developmental Abnormalities of the Breast

Amastia: Absence of breast tissue
Polymastia: Presence of supernumerary breasts
Athelia: Absence of nipples
Polythelia: Presence of supernumerary nipples
Ectopic Breast: Breast tissue located in an abnormal location
Aberrant Breast: Breast tissue with an unusual shape or form
Supernumerary Breast (Polymastia): refers to the development of extra breasts beyond the usual two.
Supernumerary Nipple (Polythelia): refers to the development of extra nipples.

Explore the intricate details of breast anatomy, including its structure, blood supply, lymphatic drainage, and developmental abnormalities. This quiz covers key concepts from the positioning of breast tissues to various conditions affecting breast development.