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DrPhil
0 Views ยท 10 months 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

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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.

DrPhil
0 Views ยท 10 months ago

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Surgeon
0 Views ยท 10 months ago

Marcus Greatens, M.D., an orthopedic surgeon at Mayo Clinic Health System provides insight into a few of the things patients can expect to experience during knee replacement surgery.

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Surgeon
0 Views ยท 10 months ago

Eric knew he needed help when an old knee injury began worsening over the course of time and was significantly affecting his quality of life. Thatโ€™s when he turned to his hometown orthopedic experts at Mayo Clinic Health System in Mankato, who recommended a total knee replacement. After overcoming some initial fears, Eric decided it was time to have the operation โ€” a fuller and more active life with his family depended on it.

Surgeon
0 Views ยท 10 months ago

Johns Hopkins orthopaedic hip and knee surgeon, Savyasachi "Savya" Thakkar, explains how to prepare for knee replacement surgery, and what to expect before and after surgery. To learn more about our hip and knee replacement division, visit https://www.hopkinsmedicine.org/ortho. #KneeReplacement #JohnsHopkins

Q&A's
0:15 What causes someone to need a knee replacement?
0:29 What should patients do in advance of surgery?
1:10 Do you recommend physical therapy BEFORE surgery?
1:43 Will joint implants set off metal detectors at airports?

Surgeon
0 Views ยท 10 months ago

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Scott
0 Views ยท 10 months ago

Scott
0 Views ยท 10 months ago

How to Know If You Have a Serious Knee Injury or Problem
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DrPhil
0 Views ยท 10 months ago

Epithelial tissue histology can be tricky โ€” itโ€™s everywhere around our body. In this video, Iโ€™ll teach you most of the different types of epithelium seen under a microscope including squamous, cuboidal, columnar, transitional, and keratinized epithelium.

โ˜ ๏ธNONE OF THE INFORMATION IN THIS VIDEO SHOULD BE USED AS MEDICAL ADVICE OR OPINION. IT IS FOR GENERAL EDUCATION AND ENTERTAINMENTโ˜ ๏ธ

๐Ÿ”— L I N K S ๐Ÿ”—
๐Ÿ“ฑInstagram: https://www.instagram.com/patkellyteaches/
๐ŸฆTwitter: https://twitter.com/PatKellyTeaches
๐Ÿ’ฐPatreon: https://www.patreon.com/corporis

๐Ÿ“ฝ O T H E R V I D E O S ๐Ÿ“ฝ
โšฐ๏ธMedical History playlist: https://www.youtube.com/playli....st?list=PL2rpvfNeooN
๐Ÿ”ฌAnatomy Basics playlist: https://www.youtube.com/playli....st?list=PL2rpvfNeooN
๐Ÿ’ชKinesiology and Biomechanics playlist: https://www.youtube.com/playli....st?list=PL2rpvfNeooN

๐Ÿ“œ S O U R C E S ๐Ÿ“œ
A full annotated, fact checked version of the script can be found here:
https://www.patreon.com/posts/45809032

๐Ÿ’ŠA B O U T ๐Ÿ’Š
Hi, Iโ€™m Patrick. Iโ€™m a freelance science writer based in the San Francisco Bay Area. I hold a bachelorโ€™s degree in Athletic Training and a masterโ€™s in clinical exercise physiology. I used to work in the clinical setting as a certified athletic trainer, physical therapy aide, and a certified strength and conditioning specialist. After working in the clinical setting, I went back to school and became a teacher. The goal of my content is to help normal people, not just pre-med students, learn about the human body. That might mean explaining a topic from an anatomy class or exploring a topic from medical history.

๐Ÿ’ป C O N T A C T ๐Ÿ’ป
If youโ€™d like to sponsor a video or have other business inquiries:
patkellyteaches [at] gmail.com

#corporis #anatomy #medicalhistory




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