tubetranscript.io

Dr Adel Bondok Anatomy Channel · Transcript · · Updated

Breast Anatomy, Dr Adel Bondok – Transcript

Video by Dr Adel Bondok Anatomy Channel · Watch the original on YouTube

Summary

AI-generated from the transcript. Verify details against the source video.

  • The female breast is ectodermal in origin, developing from two milk lines that extend from the axilla to the groin during the second intrauterine month.
  • The breast extends upward to the second rib, downward to the sixth rib, medially to the sternum, and laterally to the mid-axillary line.
  • Seventy-five percent of the breast lymphatics drain into the axillary lymph nodes, while twenty-five percent drain into the parasternal and abdominal lymph nodes.
Video thumbnail: Breast Anatomy, Dr Adel Bondok
Source video on YouTube · Transcript generated automatically and may contain errors.

Use this video with Pro

Reading, copying and transcript downloads are free. Create saved AI results for this video with a signed-in Pro account ($9/month).

Mindmap Pro · Sign in requiredTurn this transcript into a topic map you can review and download as PNG.Continue with this video →Flashcards Pro · Sign in requiredCreate questions and answers from this video to review and export.Continue with this video →X thread Pro · Sign in requiredCreate a source-based X thread draft to review before publishing.Continue with this video →Action items Pro · Sign in requiredFind explicit tasks and commitments mentioned in this video. Some videos have none.Continue with this video →

Transcript

Search ignores accents. All transcript text stays visible.

Hello everyone this is Dr. Adel Banduk Professor of Anatomy and Neuroscience Montsoura University Egypt I will talk about the anatomy of the female brista I will talk about the development the formation of the brista the age changes the extension upward downward immediately and laterally

and then we'll talk about the nipple and the irula the structure arterial supply and the venous drainage lymphid drainage and the clinical importance of the brist start by the development of the brist the brist is ectodermal in origin it develops from the ectoderm during the second intra uterine mansa

this ectoderm forms two milk lines and the milk lines extend from the axilla to the groin so it is ectodermal in origin the ectoderm forms two milk lines each line extend from the axilla to the groin

only the upper part of the milk line persists and the remaining part disappear so the upper part of the milk line forms the brist sometimes there are accessory nipples and these accessory nipples are located along the course of the milk line then we'll talk about the formation of the brist

the brist of course is formed of skin skin and fascia fat and this gland which is memory gland or milk gland and this memory gland is modified is with gland and it is present in the superficial fascia and of course the brist is formed of also contains blood vessels nerves and lymphatics

then regarding the age changes in the female brist or in the brist before puberty the brist is rudimentary is very small and male brist and female brist are identical at puberty due to hormonal changes and the secretion of estrogen the brist becomes rounded due to fat deposition

during pregnancy and lactation the brist becomes large and dense and at monopause the brist loses fat and becomes smaller in size regarding the exitention of the brist it extends upward till the second rib till the level of the sternal angle it extends downward till the sixth rib

it extends medially till the medial margin of the sternum it extends laterally till the mid-axillary line how about the axillary tail this axillary tail or the brist tail the brist tail is present in the axilla how about the nipple the nipple is the conical projection

in the male it lies in the force interquistally space but the position of the nipple in the female is variable due to the variability in the size of the brist around the nipple this circular area or circular pigmented area is called the urula

so the urula is the circular pigmented area around the nipple and it is pigmented or it is dark in color during the pregnancy due to secretion of the melanin spreading factor by the placenta so the extension upward to second rib downward to the sixth rib medially to the medial margin of the sternum

laterally to the mid-axillary line and the brist tail is present in the axilla the nipple in the male is located in the force interquistally space in the mid-clavicular line okay and the urula is colored or is a pigmented area around the nipple

regarding the brist tail the muscles deep to the brist actually two muscles medial two thirds formed by the pictorialis major muscle lateral one third serratus anterior this is the serratus anterior this is the pictorialis major so the brist bed is formed of two muscles

medial two thirds by the pictorialis major and lateral one third by the serratus anterior muscle regarding the structure of the brist as i said the brist is formed of skin

the brist has no capsule and it consists of glans and fat the brist is divided into 15 to 20 lbs by septa this is a septum another septum septum

the brist is divided by fiber septa into 15 to 20 lbs this fiber septa for what is called suspensory ligament of cooper this suspensory ligament of cooper suspends the brist each lobe contains a mammary gland and each gland has lactiferous duct this is the lactiferous duct

okay lactiferous duct so we have 15 to 20 lactiferous duct each duct dilates under the urula to form lactiferous sinus and these lactiferous sinuses act as milk reservoir and then the duct opens into the nipple

so the brist has no capsule it consists of glans and fat it is divided into 15 to 20 lbs by septa this septum form suspensory ligament of cooper which suspends the brist each lobe has only one lactiferous duct each duct dilates under the urula to form lactiferous sinus

and then the duct opens into the nipple so the nipple contains 15 to 20 openings of the lactiferous ducts regarding the arterial supply of the brist the brist is supplied by four arteries p p p l the first p okay pictoral branch of the soracoacromial artery

the second one perforating the branches of the internal thoracic artery third p perforating the branches of the intercostal arteries and the lateral thoracic artery which is a branch from the axillary artery okay from the second part of the axillary artery

so arterial supply of the brist four arteries three p and one l pictoral branch of soracoacromial artery perforating the branches of the internal thoracic artery perforating the branches of the intercostal arteries and lateral thoracic artery from the second part of the axillary artery regarding the venous drainage of the brist the veins correspond to the arteries

so we have internal thoracic vein this internal thoracic vein drains into the brachiosophilic vein then we have intercostal veins these intercostal veins drain into the internal thoracic vein azagas and hematazagas veins the lateral thoracic vein and the soracoacromial vein drain into the axillary vein

and then we'll talk about the lymph drainage of the breast the breast is divided into four zones central and lateral zones middle upper and lower 75 percent of the lymphatics drain into the axillary lymph nodes

the other 25 percent drain into the parasternal lymph nodes and abdominal lymph nodes so generally lymph drainage of the breast 75 percent drain into the axillary lymph nodes 25 percent drain into the internal thoracic or parasternal lymph nodes

and abdominal lymph nodes let us talk about each quadrant and see its lymph drainage so the breast is divided into four quadrants central and lateral quadrant medial quadrant upper quadrant and lower quadrant the central and lateral quadrant

drain into the pictorial group of the axillary lymph nodes and the axillary tail drains into the subscapular group and from the apical from the pictorial and the subscapular lymphatics reach the apical group of the axillary lymph nodes so the central and lateral quadrant drain into the

pictorial group of the axillary lymph nodes the axillary tail drains into the subscapular group then drain into the apical group the medial quadrant drain into the parasternal lymph nodes along the internal thoracic artery then to the mediastinal lymph nodes some lymphatics like this one

some lymphatics cross to the opposite side to anestimize with the lymphatics of the opposite breast therefore in breast cancer we have to examine the opposite breast upper quadrant drain into the apical group of the axillary lymph nodes either directly or indirectly through

the infraclavicular lymph nodes some lymphatics cross the clavicle to drain into the lower deep cervical lymph nodes the lower quadrant drain into the abdominal and posterior intercostal lymph nodes again lymph drainage of the four quadrants of the breast the central and lateral quadrant drain into

pictorial group of the axillary lymph nodes the axillary tail drain into the subscapular group and then lymphatics reach the apical group the medial quadrant drains into the parasternal lymph nodes and from the parasternal lymph nodes to the mediastinal lymph nodes some lymphatics cross to the opposite side to anestimize with the lymphatics of the opposite breast the lower quadrant

okay the upper quadrant drain into the apical group of the axillary lymph nodes either directly or indirectly through the infraclavicular lymph nodes some lymphatics cross the clavicle to drain into the lower deep cervical lymph nodes the lower quadrant drain into the abdominal and posterior intercostal lymph nodes and finally let us have a clinical note about the breast

Frequently asked questions

The breast is ectodermal in origin and develops from two milk lines that extend from the axilla to the groin.

The breast bed is formed by two muscles, with the medial two-thirds formed by the pectoralis major muscle and the lateral one-third by the serratus anterior.

Seventy-five percent of the lymphatics drain into the axillary lymph nodes, and the other twenty-five percent drain into the parasternal and abdominal lymph nodes.