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Epithelium – Histology | Lecturio DrPhil 92 Views • 3 years ago

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This video “Epithelium” is part of the Lecturio course “Histology” ► WATCH the complete course on http://lectur.io/epithelium

► LEARN ABOUT:
- Introduction: Epithelial Tissue
- Summary of structure and function
- Epithelium
- Three characteristics of any Epithelium
- Epithelium: Classification
- Epithelium: Epithelial Cells Exhibit Polarity
- Epithelium: How Are Epithelial Cells Joined Together?
- Epithelium: Surfaces of Epithelial Cells
- Epithelium: Basement Membrane

► THE PROF: Your lecturer is Professor Geoff Meyer. He is currently teaching at the School of Anatomy, Physiology and Human Biology at the University of Western Australia (UWA). As a leading anatomy and histology expert he is also coordinating the Federative International Program for Anatomical Terminologies (FIPAT) of the International Federation of Associations of Anatomists (IFAA). Besides medical research on the ovarian function, steroidogenesis, corpus luteum, angiogenesis, and microcirculation, Geoff Meyer’s research activities also focus on developing innovative, computer-aided learning and teaching tools. For his inventiveness, Geoff Meyer has received a number of awards, including the Australian University Teaching Award.

► LECTURIO is your single-point resource for medical school:
Study for your classes, USMLE Step 1, USMLE Step 2, MCAT or MBBS with video lectures by world-class professors, recall & USMLE-style questions and textbook articles. Create your free account now: http://lectur.io/epithelium

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Epithelium — Functions and Types of Epithelial Tissue
http://lectur.io/epitheliumarticle

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Basic histological staining methods (preview) - Human Histology | Kenhub DrPhil 209 Views • 3 years ago

In order to be able to look at tissues under a microscope, we need to first stain them with the right technique. Learn the main staining techniques used in histology today on our full video: https://khub.me/aux9w

Oh, are you struggling with learning anatomy? We created the ★ Ultimate Anatomy Study Guide ★ to help you kick some gluteus maximus in any topic. Completely free. Download yours today: https://khub.me/e0th1

As you probably know, histology is the study of the microscopic anatomy of cells and tissues. So we use staining methods to visualize and distinguish the different parts of cells and tissues since cells and their structures are usually transparent or colorless. The types of dyes used to color cells and their components can either be specific to particular structures, chemical groups or even molecules, and it can also be non-specific in which case most of the cell is stained in the same way.

When staining tissue samples, dyes that are used are either acidic or basic or a combination of the two. And why is that, you might be asking. Well, cellular structures such as nucleic acids or proteins have charged groups which are known as phosphate groups or carboxyl groups, just to name a couple. The dyes used in histology are colored organic compounds which also have a charge. Acidic dyes carry a negative charge and so they bind to positively-charged cell structures.

In the full version of this tutorial, we will cover some of the most common types of dyes used in histological staining of cells and their structures:
- basic dyes vs acidic dyes vs neutral dyes;
- hematoxylin and eosin;
- PAS - staining;
- Golgi method;
- Toluidine blue;
- Masson's trichrome;
- Osmium tetroxide;

To master this topic, click on the link and carry on watching the full video (available to Premium members): https://khub.me/aux9w !

Want to test your knowledge on the different types of cells and tissues? Take this quiz: https://khub.me/3g19f

Read more on how to interpret different histological sections on this complete article which goes through the different stains used in histology https://khub.me/saimh

For more engaging video tutorials, interactive quizzes, articles and an atlas of Human anatomy and histology, go to https://khub.me/pkvz2

Muscle Tissues and Sliding Filament Model DrPhil 304 Views • 3 years ago

Join the Amoeba Sisters a they explore different muscle tissues and then focus on the sliding filament theory in skeletal muscle! This video also briefly talks about muscle naming, some vocabulary (such as agonists and antagonists) before focusing on the sliding filament model. Video also mentions general roles of tropomyosin and troponin.
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Table of Contents:
00:00 Intro
0:39 Muscle Tissue Types
1:58 Muscle Characteristics
2:33 Skeletal Muscle Naming and Arrangement
3:26 Actin Myosin and Sarcomere
4:32 Sliding Filament Model
6:55 Tropomyosin an Troponin
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Factual References:

Betts, J. Gordon, et al. “10.3 Muscle Fiber Contraction and Relaxation - Anatomy and Physiology 2e | OpenStax.” Openstax.org, 20 Apr. 2022, openstax.org/books/anatomy-and-physiology-2e/pages/10-3-muscle-fiber-contraction-and-relaxation.

Urry, Lisa A, et al. Campbell Biology. 11th ed., New York, Ny, Pearson Education, Inc, 2017.
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Further Reading Recommendations:

What about I and A bands? What actually initiates the power stroke? How does calcium get released and from where? Remember, there is a lot more detail! We recommend this page from Openstax to learn more:
https://openstax.org/books/bio....logy-2e/pages/38-4-m

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The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. Amoeba Sisters videos only cover concepts that Pinky is certified to teach, and they focus on her specialty: secondary life science. Learn more about our videos here: https://www.amoebasisters.com/our-videos

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TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/....pinkys-ed-tech-favor

MUSIC:
Our intro music designed and performed by Jeremiah Cheshire.
End music in this video is listed free to use/no attribution required from the YouTube audio library.

COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.

TRANSLATIONS:

Spanish Subtitles Translated by Jeremy García
Hindi Subtitles: Translated by Alisha Aggarwal

We gladly accept subtitle translations from our community. Learn more here: https://www.amoebasisters.com/....pinkys-ed-tech-favor We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles.

We also have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channe....l/UC1Njo3LBy53cOPngz and Amoeba Sisters em Português https://www.youtube.com/channe....l/UCYTQPX2X_mXe0ZMPi

Respiratory Histology – Histology | Lecturio DrPhil 439 Views • 3 years ago

► Sign up here and try our FREE content: http://lectur.io/freecontentyt
► If you’re an medical educator or faculty member, visit: http://lectur.io/medytb2u

This video “Respiratory Histology” is part of the Lecturio course “Histology” ► WATCH the complete course on http://lectur.io/respiratoryhistology

► LEARN ABOUT:
- The cellular components of epithelium
- Structure and function of the conchae
- The cellular components of olfactory epithelium
- Components of the true vocal cord
- Function of the epiglottis
- The difference between bronchus, bronchiole, respiratory bronchiole
- Alveolar duct and Alveolar sac
- Components that make up the interalveolar septum
- Type I and Type II of alveolar cells, macrophages and endothelium
- Two separate blood supplies to the lungs and their functions
- Summary of the functions and the system of the respiratory system

► THE PROF: Your lecturer is Professor Geoff Meyer. He is currently teaching at the School of Anatomy, Physiology and Human Biology at the University of Western Australia (UWA). As a leading anatomy and histology expert he is also coordinating the Federative International Program for Anatomical Terminologies (FIPAT) of the International Federation of Associations of Anatomists (IFAA). Besides medical research on the ovarian function, steroidogenesis, corpus luteum, angiogenesis, and microcirculation, Geoff Meyer’s research activities also focus on developing innovative, computer-aided learning and teaching tools. For his inventiveness, Geoff Meyer has received a number of awards, including the Australian University Teaching Award.

► LECTURIO is your single-point resource for medical school:
Study for your classes, USMLE Step 1, USMLE Step 2, MCAT or MBBS with video lectures by world-class professors, recall & USMLE-style questions and textbook articles. Create your free account now: http://lectur.io/respiratoryhistology

► INSTALL our free Lecturio app
iTunes Store: https://app.adjust.com/z21zrf
Play Store: https://app.adjust.com/b01fak

► READ TEXTBOOK ARTICLES related to this video:
Histology of the Airways
http://lectur.io/respiratoryhistoloyarticle

► SUBSCRIBE to our YouTube channel: http://lectur.io/subscribe

► WATCH MORE ON YOUTUBE: http://lectur.io/playlists

► LET’S CONNECT:
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0:00 Introduction
2:00 Respiratory system Summary of structure and function
3:32 Conducting portion
7:49 The Nasal cavities
11:27 The nasal cavity
13:06 Respiratory mucosa
15:26 Olfactory mucosa
17:13 Olfactory receptor
21:16 The larynx (and the epiglottis)
25:44 The trachea
29:16 The bronchi
31:35 Bronchiole
38:50 Alveolus
40:45 Air blood barrier
43:36 Alveolar macrophages
45:35 Blood supply and lymphatic drainage of the pulmonary lobule

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