Help with Histology
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- Опубликовано: 27 янв 2011
- How to approach histology for Human Anatomy students. Using a key will help get you through it! Add some penguin fairy dust will help too!
Please note: I mis-spoke and said "striated" instead of "stratified epithelium" a couple of times... apologies!
There are lots of histology keys out there, but the one I showed in the video is here: www.penguinprof.com/uploads/8/...
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Details:
Tissue in the human body:
Epithelial: Is made of cells arranged in a continuous sheet with one or more layers, has apical & basal surfaces.
A basement membrane is the attachment between the basal surface of the cell & the underlying connective tissue.
Two types of epithelial tissues: (1) Covering & lining epithelia and (2) Glandular Epithelium.
The number of cell layers & the shape of the cells in the top layer can classify epithelium.
Simple Epithelium - one cell layer
Stratified epithelium - two or more cell layers
Pseudostratified Columnar Epithelium - When cells of an epithelial tissue are all anchored to the basement Membrane but not all cells reach the apical surface.
Glandular Epithelium -- (1) Endocrine: Release hormones directly into the blood stream and (2) Exocrine - Secrete into ducts.
Connective: contains many different cell types including: fibroblasts, macrophages, mast cells, and adipocytes. Connective Tissue Matrix is made of two materials: ground substance - proteins and polysaccharides, fiber -- reticular, collagen and elastic.
Classification of Connective Tissue:
Loose Connective - fibers & many cell types in gelatinous matrix, found in skin, & surrounding blood vessels, nerves, and organs.
Dense Connective - Bundles of parallel collagen fibers& fibroblasts, found in tendons& ligaments.
Cartilage - Cartilage is made of collagen & elastin fibers embedded in a matrix glycoprotein & cells called chondrocytes, which was found in small spaces.
Cartilage has three subtypes:
Hyaline cartilage -- Weakest, most abundant type, Found at end of long bones, & structures like the ear and nose,
Elastic cartilage- maintains shape, branching elastic fibers distinguish it from hyaline and
Fibrous Cartilage - Strongest type, has dense collagen & little matrix, found in pelvis, skull & vertebral discs.
Muscle: is divided into 3 categories, skeletal, cardiac and smooth.
Skeletal Muscle -- voluntary, striated, striations perpendicular to the muscle fibers and it is mainly found attached to bones.
Cardiac Muscle -- involuntary, striated, branched and has intercalated discs
Smooth Muscle -- involuntary, nonstriated, spindle shaped and is found in blood vessels & the GI tract.
Nervous: Consists of only two cell types in the central nervous system (CNS) & peripheral nervous system (PNS):
Neurons - Cells that convert stimuli into electrical impulses to the brain, and Neuroglia -- supportive cells.
Neurons -- are made up of cell body, axon and dendrites. There are 3 types of neurons:
Motor Neuron -- carry impulses from CNS to muscles and glands,
Interneuron - interpret input from sensory neurons and end responses to motor neurons
Sensory Neuron -- receive information from environment and transmit to CNS.
Neuroglia -- is made up of astrocytes, oligodendrocytes, ependymal cells and microglia in the CNS, and schwann cells and satellite cells in the PNS.
this video is 10 years old and its still blessing students like me. thanks for this eternal gift!
Thank you so much!
Are the cells close together?
Me: no
Her: yes they clearly are
Me: ...
Sometimes it's hard to tell I know...
Yeahh samee.. especially the skeletal muscle.. because i was looking at the nucleus instead of the whole cell😔
This is much more logical than trying to identify tissues by "looks." I want a printout of that tree! Fantastic way to to categorize and very helpful.
I wish all A&P professors were like you, clear & to the point! Thank You so much for doing this video! Cleared up everything that my A&P professor couldn't explain in a 2 hour class.
Mam, You just cleared my nightmares into sweet dreams :) Very Helpful
But when you will start again, then again nightmares will come.. Same is with me
- Term 1 Med student here -
Walking into the first week of classes, I literally didnt get histo. My fellow students were struggling to grasp it too but they all seemed to get it, unlike myself. This video is incredible and Im currently printing this key out lol. Thank you!!!
Did you make it?
I was smiling throughout the video.. I used to hate histology but you made it simple and fun!! Thank you 😃👌
My anatomy professor provided us the link to your video, and I found it to be so incredibly helpful! Thank you so much!
I've never met you, but I think I love you so much! Thank you for reopening my hopes for passing my micro classes. I failed the first semester, and though I was just stupid or something, but this has made a huge difference ---- thank you so much!
Please see downloading options in the video description above. I can't post the actual image here on RUclips unfortunately!
I wish any of my profs were like you, it's easy to hear that you enjoy teaching! Love the enthusiasm in your voice :-)
This is the best way of going about identifying cells. Your approach is very unique and effective. Thank you for posting this!
the penguin made my day
This video really helped clarify the differences in the tissues that were confusing me! Thank you so much!! Your page will definitely be my first choice when something is not clear again.
Wonderful!!! Should be mandatory teaching. Such a simple and effective way to identify tissues. Thank you!!!!
Incredibly clear presentation of this material, thank you!
when you stumble on the gates of histology heaven!!!!! Thank you so much my professor made this very complicated and lab practical is in 3 hours. Alohas from Kaneohe, Hawaii!
This is really good and you have a nice clear voice. Good job 👍🏽
The link is in the description box. :)
idk who you are penguin professor but this content saved my life. thank you!!
I'm just a little penguin trying to make sense of the world... glad it was helpful!
I don't think I could have found a better video, instead of struggling to memorize l get to actually understand and I live for that. THANK YOU
My heart sings when I hear that... thank YOU for letting me know!
Your videos are fantastic Professor Penguin! I teach at Southwestern College in Geography now, had a short stint in the Biology Department years back.....and I am so impressed with your videos! Excellent study tools, so clear and useful.Thank you for your guidance,
This video is great for a new learner. So thankful my school threw it in for knowledge. Great job. Would love a print out!!
I enjoyed the video very much. Thank you, I hope you have more histology videos cause i'm subscribing!
oh my goodness!! I'm sooooo glad I came across your videos.... I am actually understanding what it take to identify tissue. THANKS A BUNCH
so much love for you....i had no idea how to study histo befor watching this...thank you so much
That was totally useful! I just added your chart to the front of my A&P Atlas.
Awesome video, easy to understand. I like your clear and authoritative voice.
Thank you so mutch for making histology more interesting and approachable; and for having such a good vibe :D Thanks from Norway
You are most welcome!!! Thanks for watching!
Going to write my Anatomy teacher a big thank you email for really giving my class a thorough description on all these tissues, as a soon to be Histotech and Pathologist I really feel confident because I knew everything before the slides went any further, lots of tough things in the future but if I study hard I'll do great!
Can you publish this chart on your website so I can print it and put it on my histology book in order to read it very often ......PLEASEEEEEE THAT WOULD HELP ME A LOT!!!! THUMBS UP SO SHE CAN READ THIS
You could screenshot it :)
thank you for the first year in medical school :) it really helps alot!
My first time in Medical terminology, Good tutor.
Thanks!
Extremely clear and straight forward explanation! Thank you
+Marcus Maxfield You are welcome - so glad you found it helpful. Strange how rare this kind of approach is - I think it makes a lot of sense.
Thank You! A logic tree- Should be required viewing before every histology section!!
Thank You, Excellent review...I remember this from my college days!!
The penguin made my day.
This really helped to clear up all my confusion! thank you so much!!
wow that was fantastic..............going into A&P. This video took a lot of my fear away.....will watch over and over ...thanks
wow this was so amazing! could you pleeeeeease make more histology videos? thanks so much!
This video is extremely helpful. Thank you so much!
Very useful. Histo are the most boaring classes this semester in my middle-european med-school. This definatly made my task for studying much easier!
Thank you for posting this.
I had some trouble with some of the simple things you recognize so easily. Some of the tissues looked like the cells were far apart or close together, yet you said the opposite. Also, what is the definition of a free edge?
professor, please make more videos about human anatomy and physiology. My friends in anatomy struggle for this course but they get the result they want
you made my night ,you are great
I'm thankful🙏
excellent video !!! plz keep posting more
Very great!!! it makes me easy how to name the tissue.Thank u so much.
This is a great video! Thank you for the help!
I am eternally grateful.
Great approach!! I too need a copy of this tree!
Wow this is fantastic! Great video and very, very helpful!!
Thank you Professor 😊
It was a very wonderful explanation 👏
This is very helpful for me. Thank you so much!
love the way you talk :D
very nice schematic and seems to work well for the examples. The muscle however seems to be tricky, because of the first question...are the cells close together, based on the spread of the nuclei I would say no and ending up with the wrong tissue. Of course muscle cells are very easy to spot so it is not a big deal.
Thank you so much.❤
Highly appreciated.
I understand so much better.
Thank you, this is extremely helpful
Very helpful! Thank you!
Wow, Thank You, You just made me reallyreallyreally happy :)
I learnt more from this video than I dud the whole year from my professor
So glad it was helpful!!!
Lovely thank you so much you helped me i have an exam and i will use this definetly while studying
I think I love you!!! Thanks, this was very helpful!!!
Thank you so much, you're an angel doing this helpful video for us!!!
Glad it was helpful!
Thank you for this helpful video mam ...... Awesome , Simple method to make the person LOVE Histology ... Thank you again !
Thank you for this I have an interview and I know they will be testing me to look under the microscope, to identified the type of tissue and special stain. Now I can at least identify some. Thank You
omg, why didn't i find you last semester. i will definitely be watching your videos form now on.
thank you!! it's extremely helpful!!!!
wow........ that is amazing, now all i must do is memorize that and i pass!! wow why didnt my uni lectture show me a key like this... thanks alot this is really invaluble!
Very helpful video! Do you have this tree chart available to print out? I'd love to have a physical copy! Thx
Thankssss a ton! splendid tutorial I loved your explanation
You're very welcome!
Very clear :) Thank you !!
Hi. I found your video and I would like to ask for your permission to make a review of your dichotomic key or even commenting this video on spanish.
I believe we can identify the general basic tissue and cell types with no more than 4-7 steps, and this is a perfect example to show it to our students.
Superb work and content!
U are amazing love your lecture
very informative and fun!!
This is so helpful for me!!! Thank you a lot!!!
+Denisa Barbulescu You are so welcome!!! Thanks for watching!
Thank you very much prof
this video was very helpful made learning histology easier ..
So glad to hear!
THIS IS SUPER HELPFUL THANK YOUUU
I'm so glad! YOU ARE SO WELCOME!!!
This is really very superb.. Its gonna help me a lot.. Thnkusoomuch mam!
great vedio and a very good classification.
Oh wow that was so helpful!! Thank
You :)
Oh, I am SO happy to hear that! You are most welcome.
very brief useful info. Thanks a lot. :)
Thank you so much ♥! you saved me!!
I think i owe you my life now!
Wow - that's pretty serious. So glad it was helpful!!!
Thank you very much for this video.
That's awesome. It would be really helpful to understand tissue types in detailed. Thank you.
Great suggestion!
Thank you very much for this upload..it is very helpful, God bless you :)
wow this video is amazing
We are grateful....
Thank you so much
great videa, it really helped a lot! :)
Amazing!!!!!!!!! it will definitely help with the studying. somehow i dont feel as lost. yay
Thank you!
Thank you very much.
Thank so much.
It is great video.
I am printing this out immediately!
Where did you find the tree?
me too . this video make the histology much more and more easier and more fun >
This tree is awesome!
Thank you
Perfect!!! Thanks a lot!
Great Video ❤️
Thank you!!!