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Help with Histology DrPhil 118 Views • 3 years ago

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: http://www.penguinprof.com/upl....oads/8/4/3/1/8431323

Want more?
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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.

Histology of Dentin DrPhil 150 Views • 3 years ago

The dentin is a hard tissue that forms the bulk of the tooth. It is similar to bone but is slightly harder, although softer than enamel. The dentin has numerous dentinal tubules that run across its length. Each dentinal tubule houses the cytoplasmic process of an odontoblast (odontoblastic process).
📄Notes for the video: https://www.hackdentistry.com/....bundles/revision-nin

💻Website: https://www.hackdentistry.com/
📰Blog: https://hackdentistry.substack.com/

Study resources on our website-
📖Oral pathology Revision Ninja (Notes, Videos & MCQs): https://www.hackdentistry.com/bundles/oral-pathology-revision-ninja
📖Oral Histology Revision Ninja (Notes, Videos & MCQs): https://www.hackdentistry.com/....bundles/revision-nin
📖Periodontics Revision Ninja (Notes & MCQs): https://www.hackdentistry.com/bundles/perio-rn
📖Question Bank: https://www.hackdentistry.com/bundles/question-bank
📖Access all content: https://www.hackdentistry.com/bundles/all-access-premium

References and further reading:
💡Berkovitz BKB, Hollan GR, Moxham BJ. Oral Anatomy, Histology and Embryology. 4th ed. Mosby Elsevier; 2009.
💡Nanci A. Tencate’s Oral Histology. Development, Structure and Function. 8th ed. Elsevier; 2013.
💡Kumar GS. Orban’s Oral Histology and Embryology.13th ed. Elsevier; 2011.
💡Avery JK. Oral development and Histology. 3rd ed. Thieme Medical Publishers; 2002.

Log in to https://www.hackdentistry.com and get access to:
I) Numerous Notes/Cheatsheets and Videos II) Thousands of quiz questions from our vast Question Bank!

HackDentistry is an edtech company that aims make learning dentistry fun,engaging and light hearted.
1) It focuses on helping students understand and retain core concepts in dentistry through highly visual sketch/whiteboard style video animations.
2) The platform helps improve exam performance by providing Revision Bundles and allowing students to test themselves using thousands of Practice Questions from a vast Question Bank. (multiple choice format).
3) It also provides for a community platform where students can come together, and engage with fellow dental students and dentists across the globe!

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Respiratory Histology – Histology | Lecturio DrPhil 425 Views • 3 years ago

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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.

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Histology of the Airways
http://lectur.io/respiratoryhistoloyarticle

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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

Recall Card 18 | Cartilage | Histology DrPhil 427 Views • 3 years ago

#anatomy #histology #bytesizemed

✨If you would like my help studying about cartilage, you can check out my long-form video linked at the bottom of the screen.
💫 For more videos like this, subscribe to my channel, Byte Size Med.

📚Factual References & for Further Reading:
- DiFiore's Atlas of Histology
- Junqueira's Basic Histology
- Gartner's Concise Histology
- Openstax Anatomy and Physiology
https://openstax.org/details/b....ooks/anatomy-and-phy
- Openstax Biology
https://openstax.org/details/books/biology-2e
(The last two are links to open-source references. They are NOT affiliate links)

🌤 Note:
These are just a collection of my notes. So use them the way you would use borrowed notes from a friend. 📝
The images in this video are hand-drawn for illustration and explanation only.✍️ Hence, they may not be anatomically accurate. I am just one person making these videos. If there are any errors, that is unintentional. I try super hard to avoid them. Please let me know if you find any, so it gets clarified for other viewers. Science constantly evolves and changes. New discoveries are made everyday. So some of the information in these videos may become outdated. If you notice that, please let me know so I can update them.

⚡️Disclaimer:
These videos are NOT a substitute for a medical textbook. Textbooks are written by experts (which I do not claim to be), edited, proofread and referenced. Please use them.
The information has been sourced from multiple references as mentioned above. I draw all the pictures myself. But if I have inadvertently infringed on any copyright, that is completely unintentional. I only make these videos to impart education. If I have accidentally violated copyright in any way, do let me know so I can make the necessary changes or give credit to anyone who is owed the same.
These videos are NOT intended for patient education. They are NOT a substitute for diagnosis and treatment by a licensed medical professional. Always seek the advice of a qualified health care provider for any questions you may have regarding any medical condition, so that they can address your individual needs.

🔅They are ONLY meant to help students of medicine and health sciences with studying, and should be used for just that purpose and absolutely nothing else.

Byte Size Med. All Rights Reserved.

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