Types of connective tissue Proper connective tissue (most diverse) • Loose (e.g. skin) a lot of ground substances, fewer fibres, more cells and elastic fibre helps go back into shape, collagen helps anchor (stable) it (won't snap) ◦ Areolar (the most common) ‣ Find under epithelial tissue and around organs ‣ Random arrangement of fibres, a few fibroblast cells ‣ Holds at water ◦ Reticular ‣ Mostly made up of reticular fibres ‣ Find in lymph node bone marrow, and supports developing blood cells ‣ Hold blood in place ◦ Adipose (fat tissue) ‣ Mostly cells ‣ Store lipids, insulate the body against heat loss • Dense (e.g. tendon, ligament) a lot of collagen, great resistance to tension ◦ Regular ◦ Irregular ‣ Thicker fibers ‣ collagen fibres arranged irregularly ‣ Fibroblasts ‣ Found in places that exert tension in a lot of direction ‣ E.g. dermis under our skin ◦ Elastic ‣ Find in Joint ‣ made of elastic fibres ‣ E.g. connecting vertebrae, some largest artery wall ‣ Provides support and flexibility Cartilage connective tissue (White) • Hyaline (the most common type) ◦ Chondrocytes and lacunae ◦ Glassy and transparent ◦ Ground substance, proteoglycans, collagen fibres(just a little bit) ◦ Provide pliable support ◦ E.g. the connection between sternum and ribs ◦ E.g. Nose Bridge • Elastic ◦ Chondrocytes, elastic fibers ◦ Provide strength and stretchability • Fibro ◦ Chondrocyte, thick fibres of collagen ◦ Shockes absorber, standing pressure ◦ E.g. Disc between your vertebrae, knee joint Bone connective tissue (osseous tissue) • Spongy ◦ Strong, porous ◦ Internal layers of bone ◦ Uses porous to make and store bone marrow ◦ E.g. flat bones like sternum • Compact ◦ External layers of your bones ◦ Store calcium Blood Connective tissue (no fibre, but a lot of protein) • Plasma ◦ Ground substance and protein fibres • Erythrocytes (red blood cells) • Leukocytes (White blood cells) • Platelets
+Matt Huffman my teacher copied someone else's PowerPoint presentation and just open it up, add some slides and explains everything that was there. Plus the textbook is just a crammed book filled with nonsensical pictures and 10 paragraphs each page.
I'm a 4th year nursing student and i learned this stuff at least a dozen times but still I got to learn new things from you, and understand better some of the info that I already had. LOVE CRASH COURSE!!!!!!!!!
When you were pulling the skin off the chicken I actually said out loud "but it's delicious." And then a couple seconds later *you* said "but it's delicious." Made my day.
I really do wish I have videos like these for all subjects, not just biology, when I was in school. These videos are fantastic to use as a study aid and/or study supplement. Even just for a little reinforcement is helpful!
Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/2SrDulJ
You guys do an absolutely amazing job! I am so thankful to have found you on here. Otherwise, I wouldn't be doing as well in my college anatomy course. I seriously use your notes to compare with my teacher's lecture and it's absolutely awesome to find that you are discussing exactly what we cover, but better, and with some great humor. Thank you, thank you, thank you! :D
You have no idea how much i appreciate these videos being in an Anatomy course that is being taught by a professor that is just teaching to the test and definitely not making it easy to digest.(lol digestive system jokez) Thanks
I am veterinary student! This is helping me boozt my desire for more knowledge before my exams. It is nice to have an alternative source than an old book, which does not explain connective tissue very well. Love it! :-)
OMG BEST video for connective tissue. I wish you were my teacher. I just LOVE LOVE LOVE this video. No need to spend hours of searching for all connective tissue in one. I have Subscribed. Thank you.
Thanks for everything crash course. You have helped me a lot with my history, and my AP chem, and now with bio. Im really thankful for what you are doing, and keep up the good work! I hope that you eventually add a physics subject. Again, Thank you
These videos have been so helpful for me as I have ADD and have a hard time focusing. It also helps that I'm a visual learner and being able to see what is being explained is much more useful than reading off a slideshow. I should've just saved my money and not bought the textbook since I haven't even opened it once lol.
As a person who raises chickens, I can tell you that you *definitely* *can* remove the skin from a chicken -- with ease -- before it's cooked. Some people even prefer this method to plucking, which is more time consuming and feathers-everwhereing. My chicken Carly had many square inches of skin removed by a predator and she grew it back and is doing fine now.
I decided I'm not going to college I'm just taking this lessons ,at the end you should send me a test online, I will answer and send it back and you will mail me a diploma,and I will send you guys a moneyorder with $1000 ok? Deal :) love you guys,NEVER stop what you are doing,I literally watch your videos, stop everytime I never heard of something and Google it and do a very deep research and finish the video. I really learned WAY more than back in high school. I take this seriously :) then I share every video so you guys get paid for this! Because you guys deserve it!!!
I literally can not thank you enough for your vids! They are incredibly helpful, and are a large part of the reason I passed my bio class last semester and hopefully A&P class this semester! THANK YOU SO MUCH!!!
I freaking LOVE all your videos. They are SUCH a great supplemental instruction while I am studying these subjects!!! thank you thank you for making these!!!!!! :)
As a person with Marfan's Syndrome (a CT disorder) it's very surreal to hear talk of tissue functions while its being compared to meat and butchers. Very very surreal.
I love how you explain stuff down to the tee. I have an Anatomy test on 3 chapters and Tissues is one of them and my gawd i am just overwhelmed with alot of info and then we have to label the tissues, bones , augmentary system and more 😣. I still have like 4 days to study
I eagerly await future episodes, such as Tissues, Part 75 - Types of Connective Tissues: Crash Course A&P #76. But seriously, I'm really enjoying this series.
you can pull the skin off an uncooked animal, the most common way of skinning animals is to cut just enough to get a hand hold, anchoring the legs and just pulling it off. takes a bit of work, and if the animal has gone cold it takes a LOT of work, but it's certainly doable.
I just have to thank you. I click on the link knowing nothing, 10 minutes later I know a lot of things....your teaching style is excellent! THANK YOU!!!
I am loving your channel! Watched 4 episodes of this series and became one of your patrons tonight. I can't wait to work my way through all of your courses. Who needs netflix? :D
my brain needs MORE I am actually addicted and I think it's a problem. yesterday I was late for work because I was; what the cool kids in my town call, "crashcoursing" MOAR!!!
speechles!!!!they are really awsome .......you brothers are really makin it at it's best ALL THE VERY BEST for whatever you are planning to do further BROTHERS...... ,this is reallllly........awsome ! May GOD bless you both...
I love this 5 part series on Tissues!... im taking Anatomy Physiology this summer and this week we are on Tissues... I read the text book chapters on tissues and then watched this series... and this 5 part videos match up so well to my text book material ... Human Anatomy & Physiology Tenth Edition by Marieb and Hoehn . .. .. helped me absorb information more with video explanation :)
You have become my substitute to Netflix. I love this so much. I have an exam on the respiratory system in two weeks. Any chance you can help a guy out and post that video soon? :P
Thank you so much sir this makes the part of connective tissue that seems so complicated understanding I have a feeling this will help me and my gp a lot I’m really grateful for your help
