#epithelium
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Trick or treat?
Uhh, uhh, HAVE SOME HISTOLOGY DRAWINGS?!
#trick or treat#halloween#callimara#ask callimara#histology#med student#med studyblr#epithelium#connective tissue#cartilage
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Aggressive Features
Features that differentiate highly metastatic breast cancer cells from less aggressive forms revealed. The epithelial-mesenchymal transition defines changes that cells undergo when becoming invasive, whether during tissue development, wound healing or cancer progression. This study shows that highly metastatic cells bear a hybrid of epithelial and mesenchymal characteristics
Read the published research article here
Video captured with Leica Microsystems technology
Video from work by Mary E. Herndon and colleagues
Department of Biology, University of Iowa, Iowa City, IA, USA
Video originally published with a Creative Commons Attribution 4.0 International (CC BY 4.0)
Published in Disease Models & Mechanisms, September 2024
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Types of Epithelia
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Fuck them!
#megan thee stallion#ReblogView post#shedondidit#marthamays#19h ago#black women#freshbling#fuck them indeed#horriblybeautifulparadise#drist--zoi#homolobotomized#abt megalodon#bklynmusicnerd95#keybladeofsteel#justice just in time for xmas#epithelium#log6#tory lanez convicted on all charges!!!#anyone who bought his bullshit for even a second is a brainless fucking moron and i hope he rots in hell#Avatar#tariah23#relelvance#twitter#korloniumcrystals#theblackpearlofwakanda#20h ago#oh thank fucking god#black women deserve so much better than this shit#the fact that we even had to doubt if that rat was gonna get the hammer#unacceptable
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If I read the word epithelium one more time I fear I'm going to burn this book.
I hate biology, it makes me cry :(
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Smell is the most direct of the senses. Aromas must literally enter the body before they can be consciously identified. With every inhalation, molecules travel through the thin craggy pathways that begin at the nostrils and head toward the brain. They speed past the olfactory cleft, a narrow opening toward the top of the nose. They hit the olfactory receptors, which are housed on the hairlike tips of the millions of neurons that peek through a gold-hued mucous membrane called the olfactory epithelium.
Every human has around 350 different types of these receptors, which are unique proteins on both the left and the right side of the upper nostrils. These receptors are the gateway to the complex dance of perception. They connect to the smell molecules upon arrival and then transfer signals toward the brain by chemical impulse. Every human has between six and eight million neurons in the nose to do just that. These signals are fired rapidly, by many neurons at a time, forming a pattern not unlike a line of musical notes, or the HTML coding of a webpage. When combined, the brain interprets the signals as a smell, an “odor image”.
These patterns are both complicated and minute. Scientists have found that if the chemical structure of two smells are identical except for just one carbon atom, the patterns sent in response are nonetheless distinguishably altered. Nonanoic acid, for example, is a nine-carbon chain that yields the salty smell of cheese. Decanoic acid, with only one carbon atom added to its structure, however, smells rancid, like sweat.
These patterned signals travel on pathways made by neurons, which snake from the nose through a thin sheet of bone called the cribriform plate, and are deposited in the olfactory bulb, which lies toward the bottom of the brain. The bulb takes these patterns, like reading the score of a piano concerto or lyrics to a lullaby, and sends them farther on to the olfactory cortex. The cortex, in turn, relays an interpretation to other parts of the brain like the thalamus, which deals in conscious perception, and the limbic areas, for emotional response.
 — Season to Taste: How I Lost My Sense of Smell and Found My Way (Molly Birnbaum)
#book quotes#molly birnbaum#season to taste: how i lost my sense of smell and found my way#neuroscience#neurology#chemistry#biology#human biology#senses#smell#brain#neurons#olfactory receptors#olfactory epithelium#cribiform plate#olfactory bulb#primary olfactory cortex#thalamus#limbic system
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Hey girl, are you a microscopic slide of stratified cuboidal epithelium? Cause. You look like a kiwi.
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Human Cell Tournament Round 1
Propaganda!
Simple columnar epithelium is a single layer of columnar epithelial cells which are tall and slender with oval-shaped nuclei located in the basal region, attached to the basement membrane. In humans, simple columnar epithelium lines most organs of the digestive tract including the stomach, and intestines. Simple columnar epithelium also lines the uterus. Simple columnar epithelium is further divided into two categories: ciliated and non-ciliated (glandular). The ciliated part of the simple columnar epithelium has tiny hairs which help move mucus and other substances up the respiratory tract. The shape of the simple columnar epithelium cells are tall and narrow giving a column like appearance.
In immunology, a memory B cell (MBC) is a type of B lymphocyte that forms part of the adaptive immune system. These cells develop within germinal centers of the secondary lymphoid organs. Memory B cells circulate in the blood stream in a quiescent state, sometimes for decades. Their function is to memorize the characteristics of the antigen that activated their parent B cell during initial infection such that if the memory B cell later encounters the same antigen, it triggers an accelerated and robust secondary immune response. Memory B cells have B cell receptors (BCRs) on their cell membrane, identical to the one on their parent cell, that allow them to recognize antigen and mount a specific antibody response.
#Simple columnar epithelium#Memory B cells#poll#polls#tumblr poll#tumblr polls#tournament poll#wikipedia#cells of the human body#science tournament#biochemistry
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don’t look at the tags I talk about something icky there
#one of the spots on my upper palate where the adminsistered a shot of anaesthesia was feeling funny probably because it scabbed over#a little. I have a chronic habbit of worrying my skin so I used my tongue to start of peel it back and then pulled it back farther than it#really went. now I’m worried that I’m trying to peel off a tiny strip of gum and I can’t tell if I’m taking it too far because I’m on#painkillers.#i’m trying to yank it off with my fingers but I’m guessing it won’t come off unless I use scissors and#I’m NOT doing that. but my tongue is now constantly in contact with that loose strip of epithelium and it’s driving me crazy.#text
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I think that bong rip pulled smoke into parts of my lungs I haven't used in 20 years. Damn.
#weed#bong rip#bong#marijuana#stoner#I coughed real fuckin deep#and it pulled phlegm from the outer reaches of my epithelium#tbh now that it's been a few minutes#it actually feels pretty good
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would love to go more than a few months without eye issues. that would be great
#personal#abrasion reopened *again*#and i want to go visit my friends at the con they're selling at today#luckily it's close so i think i can drive myself safely#but gods would it be nice to not have to worry about if it gets more irritated#would be nice to wake up in the morning and not have to worry about if my eyes are dry and if im opening them too quickly#i just want a cornea where the epithelium actually fucking stays on#is that really so much to ask for?
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Stem Cell Lining
Importance of the epigenetic regulators (modifiers of DNA activity) KAT2A and KAT2B in maintaining stem cells that renew the intestinal lining which is key for survival
Read the published research article here
Image from work by Mai-Uyen Nguyen and colleagues
Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
Image originally published with a Creative Commons Attribution 4.0 International (CC BY-NC 4.0)
Published in Science Advances, August 2024
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ciliated means that it can move stuff over itself. Makes sense because cilia is an organelle that moves mucus over the cell. On another note it's related to a flagella except it doesn't move the cell itself. nonciliated is the opposite of that see this is easssyyy
#im gonna chew the squamous stratified epithelium of my buccal#HA you get it? i can speak in jargon too!!!#this bird studies
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sorry OP but the rest of your organs are absolutely NOT covered in mucus! only surfaces exposed to the outside environment or lining an organ make mucus (nose, sinuses, mouth, the inside of your lungs and digestive tract, vagina, etc.) because mucus serves a protective function. all of your other internal organs (heart, outside of lungs, liver, spleen, kidneys, outside of digestive tract, etc.) are either a) directly attached to adjacent structures or b) covered in a layer of serosal tissue (pleura, pericardium, peritoneum) that slides against another layer of the same tissue with a thin layer of fluid in between. this fluid is produced by blood filtering out of capillaries and is not mucus.
Hey do you know alot about internal organs. Cause if so then i have a pretty specific question.
Are... are your organs covered in blood??? Since blood tends to flow thru the blood vessels, and if your body is healthy and all your blood vessels are imtact then your organs shouldn't be covered in blood, right? But just saying that feels wrong.
No, unless you are actively experiencing internal bleeding then your organs are not covered in blood. They are however wet, but it's cerebrospinal fluid and mucus that keeps them that way.
#mucus serves specific functions like trapping and carrying away pathogens or protecting epithelium from acid#there's no need for mucus inside closed spaces
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Infinite in Both Directions
@sketiana // cells undergoing mitosis // neutron stars colliding // 'saturn', sleeping at last // voyager golden records // diagram of an atom // diagram of the solar system // 'a toast to the alchemists', laura giplin // neural stem cells // ciliated ventral epithelium // 'constellations', the oh hellos // jwst deep field // 'singularity', marie howe // heart of the phantom galaxy // 'zephyrus', the oh hellos // apoferritin // aerial view of a forest // a graph me and my project co-chair made to model angle over time of our payload // molybdenum and sulfur atoms // unknown // pillars of creation
#web weave#webweave#space#infinity#atoms#idk. i'm so normal about this.#somehow we're right in the middle
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i need to cram
#DHHERBDHHFBTBFNXNENFBFNTBDHRBFBFBFHDBFBFBFBDHEHEHBDBDFBFNDJFJBEBDVERBRVGRRBRGRGRGRGVRVRGRGRGRVDBRBRVRGR#simple squamous probably diffusion and absorption and shit in the lungs i think#simple cuboidal ABSORBTION AND EXCRETION in the damn kidneys and glands#ermmmm#the columnar epithelium will murder me i think#hyaline more like alonealine#elastic stick together#fibro whatever in the back thats the fucked up stuff#in my dadd back#im failing this test tbh
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