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Breast Anatomy

Breast Anatomy


Let’s draw a diagram
of the human breast and talk about some of
the amazing functions of this organ. Now, the human breast in
both males and females contains mammary glands. And in females, around
the time of puberty, these mammary glands develop. In males, they usually
remain undeveloped. And the main function of
these glands– and I’ll just write in the
name over here. These are called
the mammary glands, and the main function
of the mammary glands is to secrete milk to
nourish the human infant. Now, these mammary
glands, each of them drains toward the
nipple by a little duct called a lactiferous duct. And I remember when I was
expecting my first baby, and I remember
thinking, where is the milk going to come out from? I don’t see a hole there. And the answer is, there
isn’t a single hole. There are many
tiny holes that are so small that you can’t actually
see them with the naked eye. And so these lactiferous
ducts– and I’ll just label them for you here. These are the lactiferous ducts. And the lactiferous ducts empty,
or drain, towards the nipple and towards that
darker area of skin that we see when we look
at the human breast. And that area skin
is called the areola. And the reason
the areola exists, is because when the
newborn first comes out, newborns actually
don’t see very well. And in order to help them
find their source of food, we have this darkened area
of the breast that actually gets quite a bit darker
during pregnancy. OK. So now, these mammary
glands are lined with what we call
myoepithelial cells. And let me just break
down that word for you. Myo is a prefix that we use when
we’re talking about anything that has to do with muscles
or anything contracts. So these are, we know,
contractile cells. And they’re also
epithelial cells, and epithelial cells in the body
are the cells that line things. So these cells, these red ones,
these myoepithelial cells, are cells that both
line the mammary glands and have the ability to
contract to eject the milk out through the lactiferous ducts. Now, all of these
structures are supported by quite a bit of
connective tissue. And we’re usually talking
about– in the breast the main ones are
collagen and elastin. And all of these
connective tissue framework comes together in these
ligaments, strong ligaments that anchor the breast
to the chest wall. And these ligaments are
called Cooper’s ligaments. In medical school, we
used to remember this by saying the phrase
Cooper’s droopers. But after having had
three children and breast fed for a long time, I don’t
think that’s so funny anymore. Anyway, the only other
thing in the breast that makes it kind of a
soft and squishy organ is the adipose tissue
that also forms part of the framework,
or the structure, and supports actually
all of these glands along with the connective
tissue, the collagen and elastic. So this is our adipose tissue. And we’ll see in
our next video what happens, how the body
knows when to cause these myoepithelial cells to
contract, to eject the milk out of the mammary glands.

44 comments on “Breast Anatomy

  1. Hi there I am wondering if you could do a video on the blood supply and lymphatic drainage of the breast as I have an exam on this soon. This video was great revision nonetheless! ICL MBBS student

  2. Nice video… one thing wrong represented is the suspensory ligqment whixch ia suppose to be perpendiculular to the dermis

  3. This is amazing. I was always confused as to where the milk came out of and how that would even work. Small holes make much more sense than large ones.

  4. Brilliant. Currently in nursing school with the intention of pursuing my certified nurse midwife degree. Love this presentation….totally don't appreciate the droopers reference also after 1 breast-fed child hahahaha!

  5. isn't this one of god's miracles ? 
    isn't this argument strong enough to prove that, nothing happened  by accident (by big bang ) ?
    There are clear signs on earth and sky that, one God exist and everything happened by his will.
    Praised be God , creator of everything.
    (From a  Muslim)

  6. How is it different from gynecomastia (male brest tissue) is it as same in case of male brest development during puberty??
    🙂 you describe amazing.

  7. I love the Khan Academy, every teacher in the team is amazing at explaining and easy to understand, keep up the great quality work guys 🙂 Donate if you agree!!!

  8. it was very useful got my studies.. thank u so much … do u make videos for all the system .. I want to know that .. if possible reply me..!!

  9. its prejudice that women are REQUIRED to cover their boobs when MALES and females have boobs. I guess people are just scared of differences 🖕🏻

  10. what s the meaning of cooper s drooper s ? My english is not very well so i couldnt understand the drooper part 🙂

  11. Great video. I appreciate the clarity, humor, and education. Never knew the lactiferous ducts consisted of many tiny holes that drain towards the nipple vs. a single hole. #birthinglittlehumans

  12. It's amazing information land helpful and i remembered this vodeo gives us from our anatomy teacher Dr. Prema p. Thaknk u mam

  13. Short time video with completely explanation I don't know how to thank you.. anyway u did a good job👍👍👍

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