Breast Anatomy And Physiology Pdf

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breast anatomy and physiology pdf

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The breasts are specialised organs, which are located on the anterior chest wall. The female breast is more developed than the male breast, as their primary function is to produce milk for nutrition of the infant and baby.

Mammary gland

Breast Disease pp Cite as. Breast development begins in the 5th and 6th weeks of fetal development and continues through puberty. Errors during development can lead to abnormal development or complete failure of breast development. The breast comprises several structures that are both functional and supportive. Some of these structures do not fully develop until pregnancy and lactation and regress or involute after lactation and at menopause. The anatomy of the breast and axilla are important in oncological surgery and must be considered during surgical planning to ensure the proper treatment of breast cancer.

Overview of the Breast

The breast is an organ whose structure reflects its special function: the production of milk for lactation breast feeding. The epithelial component of the tissue consists of lobules , where milk is made, which connect to ducts that lead out to the nipple. Most cancers of the breast arise from the cells which form the lobules and terminal ducts. These lobules and ducts are spread throughout the background fibrous tissue and adipose tissue fat that make up the majority of the breast. The male breast structure is nearly identical to the female breast, except that the male breast tissue lacks the specialized lobules, since there is no physiologic need for milk production by males. Anatomically, the adult breast sits atop the pectoralis muscle the "pec" chest muscle , which is atop the ribcage. The breast tissue extends horizontally side-to-side from the edge of the sternum the firm flat bone in the middle of the chest out to the midaxillary line the center of the axilla , or underarm.

Physiology pdf breast anatomy and

If your institution subscribes to this resource, and you don't have a MyAccess Profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus. Please consult the latest official manual style if you have any questions regarding the format accuracy. The mammary gland is a distinguishing feature of mammals and its primary role is to produce milk to nourish offspring Figures 1. In humans, the breast has a multitude of further roles including being a major female sexual characteristic and a key part of female body image.

Anatomy and physiology of the breast insights. From this recent study the earlier depictions of breast anatomy were proven inaccurate. The point needs to be made that anyone who has had their anatomy training between and needs a refresher course..

Breast anatomy

Anatomy and Physiology of the Breast

Management of Breast Diseases pp Cite as. This chapter is a review of the development, structure and function of the normal human breast. It is meant to serve as a backdrop and reference for the chapters that follow on pathologies and treatment. It presents an overview of normal gross anatomy, histology, and hormonal regulation of the breast followed by a discussion of its structural and functional changes from embryonic development through postmenopausal involution.

The female breast covers a fairly large area. It extends from just below the collarbone clavicle , to the armpit axilla and across to the breastbone sternum. The breast is a mass of glandular, fatty, and fibrous tissues and contains no muscle tissue A layer of fat surrounds the gland and extends throughout the breast The fatty tissue gives the breast a soft consistency. Structure The breast is a mass of glandular, fatty and connective tissue. The breast is made up of:. The skin of the breasts is smooth and varies in color depending on the clients skin tone. The nipple, which is located in the center of the chest, contains the tiny openings of the lactiferous ducts through which milk passes.

A mammary gland is an exocrine gland in humans and other mammals that produces milk to feed young offspring. Mammals get their name from the Latin word mamma , "breast". The mammary glands are arranged in organs such as the breasts in primates for example, humans and chimpanzees , the udder in ruminants for example, cows, goats, and deer , and the dugs of other animals for example, dogs and cats. Lactorrhea , the occasional production of milk by the glands, can occur in any mammal, but in most mammals, lactation , the production of enough milk for nursing , occurs only in phenotypic females who have gestated in recent months or years. It is directed by hormonal guidance from sex steroids.

Overview of the Breast

If your institution subscribes to this resource, and you don't have a MyAccess Profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus. Please consult the latest official manual style if you have any questions regarding the format accuracy. The mammary gland is a distinguishing feature of mammals and its primary role is to produce milk to nourish offspring Figures 1. In humans, the breast has a multitude of further roles including being a major female sexual characteristic and a key part of female body image.

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3 Comments

  1. Paolo H. 25.04.2021 at 23:22

    PDF | The mammary gland is an organ of ectodermal origin whose structure reflects its function: the production of milk for lactation. In humans.

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