Breast Anatomy and Development

Axilla - Anatomy of the Breast and Axilla

Location/Anatomic Boundaries
The axilla is a pyramidal space between the arm and the thoracic wall. It…    

Thoracic Wall - Adult Breast Morphology

The thoracic wall is composed of the 12 thoracic vertebra, 12 ribs and costal cartilages, sternum and associated…    

Adult Breast Morphology

Location/Anatomic Boundaries
The adult breast lies between the second and sixth ribs in the vertical…    

Anatomy of the Breast and Axilla

Embryology/Development
The mammary glands develop from ectodermal ridges that form on the ventral surface of the…    

Breast Changes during Pregnancy

During pregnancy, marked ductular, lobular, and alveolar growth occurs as a result of the influence of luteal and…    

Breast Development and Physiology

Microscopy, Morphology, and the Menstrual Cycle
Histologic changes in the normal breast have been identified…    

Muscular Abnormalities

Congenital absence of the sternocostal head of the pectoralis major muscle and its associated abnormalities has been described…    

Muscular and Neural Anatomy

The important muscles in the region of the breast are the pectoralis major and minor, serratus anterior, and…    

Normal Breast Development During Puberty

Puberty in girls begins at the age of 10 to 12 years as a result of the influence…    

Abnormal Breast Development

Congenital Abnormalities
The most frequently observed abnormality seen in both sexes is an accessory nipple…    

Breast Anatomy and Development

Introduction
The breasts, or mammary glands, of mammals are important for the survival of the…