This really helped me back in the day during medical school histology exams. Still valuable today as I need to review bone formation in radiology! Great pathology correlate.
Mike I think you might mean "Osteoclasts". Since they release powerful lysosomal enzymes and acids they can breakdown bone. This process is called "resorption". This is a normal part of development , maintenance, and repair of bone.
The cartilage doesn't turn into bone, the cartilage dies because it's extracellular matrix calcifies. Osteoblasts come in after to clear out the dead cartilage and create new bone. Just a clarification.
This might be a question with a very easy answer, but if the osteoid (which later becomes bone) is on the bottom, how was the bone tissue we saw on top formed?
The upper part represents the second ossification center, which usually develops at the two epiphyseal ends of a bone. The cartilaginous part inbetween is just the growthplate extending towards the epiphyseal end.
As always you have been very clear and helpful in explaing in deatils the slides. And for that I thank you. But I was wondering why you didn't mention at all the innermost layer of the cartilage: the zone of resorption, which sit in between the zone of calcified cartilage and the actual diaphysis (at least according to my book, Ross & Pawlina - Histology: Text and Atlas). Did you just forgot it or is there any specific reason?
![Osteogenesis Histology (Membranous and Endochondral Ossification) [Bone Histology Part 3 of 3]](http://i.ytimg.com/vi/0YE-2275i8A/mqdefault.jpg)
This really helped me back in the day during medical school histology exams. Still valuable today as I need to review bone formation in radiology! Great pathology correlate.
So helpful , from Iraq 🇮🇶 , thank you
Mike I think you might mean "Osteoclasts". Since they release powerful lysosomal enzymes and acids they can breakdown bone. This process is called "resorption". This is a normal part of development , maintenance, and repair of bone.
thank you so much,you have been very helpful for my histology exam
I know I am pretty off topic but does anyone know of a good website to stream newly released tv shows online?
@Kamden Reyansh lately I have been using flixzone. Just google for it =)
Thank you. Your video is helping me review for my exam. Your other videos have been helpful, too!
Is this seriously from 15 years ago? I can't believe it. Thank you for the upload! And the resolution is on top!
The cartilage doesn't turn into bone, the cartilage dies because it's extracellular matrix calcifies. Osteoblasts come in after to clear out the dead cartilage and create new bone. Just a clarification.
thank you so much!!! you are so helpfulllll
I love your voice, I can memorize everything very well :)
13 years ago!!! Wow 👏🏽
I wish I watched this back when I was in grade 3 lmao, I would’ve felt so smart (and my memory wouldnt have been so shite)
This might be a question with a very easy answer, but if the osteoid (which later becomes bone) is on the bottom, how was the bone tissue we saw on top formed?
the top one is an old bone
The upper part represents the second ossification center, which usually develops at the two epiphyseal ends of a bone. The cartilaginous part inbetween is just the growthplate extending towards the epiphyseal end.
Thank you very much! You are amazing!
What a lifesaver!
Such a beautiful slide
Curious on why the chondrocytes proliferate towards the diaphysis and not towards the second ossification center
As always you have been very clear and helpful in explaing in deatils the slides. And for that I thank you. But I was wondering why you didn't mention at all the innermost layer of the cartilage: the zone of resorption, which sit in between the zone of calcified cartilage and the actual diaphysis (at least according to my book, Ross & Pawlina - Histology: Text and Atlas). Did you just forgot it or is there any specific reason?
thanks a lot Dr.!
thank you for this video washington deceit :)
Thankssss alot, i really LOVE u!!
16 years ago 😮😮😮😮❤
you are the worst
love from Libya
Thanks alot u made the concept look easier :)
great video(very helpful)
Don't chondroCLASTS clear away the GAG and proteoglycans from the old cartilage?
no it deteriorates
are the cells 'chondracytes'??
can you describe the intramembrenous ossification? o.O
Thanks!
This is perfect
Thank you
thank you...
very excellent, thank you :-)
Thank you well done
Still relevant!
Very helpful video. Thank you.
AND THANK U VERY MUCH!
is this PAS coloration?
From mesenchyme
great
I can't differentiate anything in histology :(
Bre Klein Hang in there, sweetie!
@fizzypopbp1 hahaghahahahaha..... y so funny?
H&E i guess
Thanks!