BREAST ANATOMY

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Күн бұрын

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Breasts are paired structures present in both males and females, though they are larger in females after puberty. Here we see the breast from the sagittal aspect. It lies superficially to the pectoralis major and serratus anterior muscles on the anterior thoracic wall. Horizontally, each breast covers the region from the sternum’s lateral border to the mid-axillary line. Vertically, the breasts run from the 2nd to 6th costal cartilages. Each breast has two regions: the circular body, which makes up the bulk of the breast, and the axillary tail, which runs along the inferior lateral edge of the pectoralis major towards the axillary fossa.
The nipple is the central protruding part of the breast, and it is composed primarily of smooth muscle fibers. The areola is the pigmented skin area that surrounds the nipple. It has numerous sebaceous glands which enlarge during pregnancy and secrete an oily substance to lubricate the nipple.
Breasts have mammary glands. These modified sweat glands are involved in lactation, or the production of milk. These glands consist of sections called lobes, and there are about 15-20 of these per breast, arranged in a circle like the petals of a flower. Each lobe consists of many smaller lobules, which are glands that produce milk. Lobules are composed of numerous tiny, hollow sacs, called alveoli, which drain into a single lactiferous duct. Lactiferous ducts converge at the nipple. Just before these ducts enter the nipple, they are dilated at the lactiferous sinus. Production and secretion of milk is regulated by the hormones prolactin and oxytocin, which are secreted by the pituitary gland.
The mammary glands are surrounded and supported by a connective tissue stroma. This tissue has fibrous and fatty components. The fibrous stroma forms Cooper’s ligaments, also known as the suspensory ligaments of Cooper. These ligaments maintain the shape of the breast, separate the secretory lobules and secure the breast to the skin and the underlying pectoral fascia. The pectoral fascia is a sheet of connective tissue associated with pectoralis major.
The retromammary space is a layer of loose connective tissue between the breast’s base and the pectoral fascia. This space is often exploited during reconstructive plastic surgery.

Пікірлер: 32

@kimberlynkamba9979 2 жыл бұрын

This was the best explanation

@MMCreation28 3 жыл бұрын

Thank u so much fa ua video..it's really helpful for me...i got nearly 40 % percent of needed knowledge u gave..it's really much helpful for esp mbbs students

@NeuralAcademy 3 жыл бұрын

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@Jason-o5s 28 күн бұрын

Cheer~~~denoting or relating to the human female breasts or the milk-secreting organs of other mammals.😅

@princemj1229 10 ай бұрын

മലയാളം

@hedgemist691 11 күн бұрын

Not everyone has protruding nipples

@hramirez69 Жыл бұрын

Thank you! Well done.

@RICKROLL1800 2 жыл бұрын

What is this not a song

@shivanikashyap3829 2 жыл бұрын

How to treat sagged breast

@unclesam4881 7 ай бұрын

Mastectomy

@monikabobak7651 2 ай бұрын

Esetleg elmondhatnák magyarul is. Nekem nem fordítja le a telefon

@ivorysmith239 2 жыл бұрын

The Christian God is the True God and I am going to prove it right now: God has a Law called the Ten Commandments (Exodus 20). These Laws include do not lie, do not steal, don’t put others gods before Him (Exodus 20) Have you ever broken any of these Laws? Have you ever told a lie? Have you ever stolen anything? Have you ever lusted after someone? If we really went over God’s Laws in the Bible, every single one of them, it can really expose how much of a sinner we truly are and because we have all committed these acts our punishment is Hell because God’s standard is perfection. Our good works cannot get us into Heaven. That’s like you steal a soda from the store but you tell the judge, “hey judge I give to the orphanage, I do community service.” The judge will not care about what you did. You stole something that was not yours so therefore the Judge is going to find you guilty. God is the same way. But, this Judge is a loving Judge who does not want to sentence you for your crimes. He sent His Son Jesus Christ to come and take the punishment for your sins and if you Repent of your sins and accept jesus Jesus Christ as Lord and Savior then you will be saved from the sentence. Jesus loves you and is not willing that any should perish but have everlasting life (John 3:16) God bless

@hannaheddy5829 Жыл бұрын

♥