page_title: Intermammary cleft
section_title: Skin
hierarchical_section_title: Intermammary cleft / Anatomy / Skin
caption_attribution_description: English: Anatomy of intermammary cleft
context_page_description: The intermammary cleft or intermammary sulcus or sulcus intermammarius is a surface feature of males and females that marks the division in the chest of the two breasts. It is delineated by the location of each breast in relation to the sternum dividing them. The International Federation of Associations of Anatomists uses the terms "sulcus intermammarius" or "intermammary cleft" when referring to the area between the breasts.
context_section_description: At the midline of the breast—the intermammary cleft—a deep layer of superficial fascia (lowermost layer of the skin) is firmly attached to the pectoral fascia (outer side of chest muscles) and the periosteum (bone membrane) of the sternum. It forms a shelving edge that supports the breasts.
caption: Anatomy of the cleavage, the red outlined area is the intermammary cleft
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