#med school
Late night quesmed :)
Esoph-egg-us
✅Non-keratinized stratified squamous epithelium
✅Circumscribing muscularis mucosae
✅Submucosal glands
✅Dual layered muscularis externa
It’s just not Spring until you have painted your very own Esoph-egg-us
So get cracking and I don’t want to hear any eggscuses
#histology #science #pathology #pathologists #anatomy #autopsy #eggs #easter #spring #biology #esophagus #digestive #premed #meded #nurse #nursing #medschool #medstudent #medicine #education #vetscience #vetschool #dentistry #histotechnology #histologica #histotech #histo #pathArt #sciArt #ihearthisto
Grumpy Cord
A transverse slice through a spinal cord that looks like Grumpy Cat.
Being the center of the nervous system, transmitting neural signals between the brain and the entire body and controlling independent neural reflexes…is just so awful .
The pale central face is the ‘grey matter’ and is home to the many neuron cell bodies that run through the spinal cord. The surrounding darker region is composed of the axons of these neurons as the exit, enter, ascend and descend through the spinal cord on their way to innervate muscles, or returning information about pain back from the skin, or relaying information about body position back to the brain.
☘️Shamrock Gloms ☘️
For each petal on the shamrock,
This brings a wish your way.
Good health. Good luck. Happiness.
For today and every day.
Happy St. Patrick’s Day!
Three renal corpuscles (glomerulus + their surrounding Bowman’s capsules) floating in a sea of distal and proximal convoluted tubules within the cortex of the kidney.
These three small structures are knotted balls of capillaries (glomeruli) surrounded by a specialized epithelium (Bowman’s capsule) that is composed of cells called podocytes. These cells have tiny interlocking legs that form a small slit between them.
This structural organization is responsible for filtering your blood to produce a fluid that then travels within tubes continuous with the Bowman’s capsule called nephrons. In these nephrons the tubular fluid is modified by reabsorbing and secreting ions and conserving water to produce urine for excretion.
⚡Lord Voldermis⚡
A biopsy of a region of skin-that-shall-not-be-named (dermis/hypodermis junction shhh), complete with nerves, vessels, sweat glands and hair follicles.
by @nejiby
You can find LOVE in the strangest of places (2022 edition)
By row starting top left:
1. in a skin cylindroma
2. in an hepatic ductule
3. in a pancreas
4. in a warty penile growth
5. in a mucus-y colon
6. in a region of hypodermis
7. in a secondary oocyte
8. in a chondrosarcoma
9. in a small artery
Happy Valentine’s Day
Tag a friend with the histo heart you want to share with them and spread the love!
Images by:
@ihearthisto [1-4, 5-9]
@donna.horncastle [5]
Ghostface Killer is back!
Only this time he’s hiding in a rectum!
Scaring while you’re learning!
A rectal scrape is performed (more often in veterinary med) to obtain a sample of the epithelial cells lining the rectum. These are observed in the microscope for abnormal changes or for microbes and their eggs/larvae that might be present in the digestive tract.
This particular scrape contains an epithelial cell that appears to be bi-nucleate and is surrounded by red blood cells.
❄️Pappy Holidays❄️
There’s nothing quite like a Pap smear Christmas tree to rock around this happy holiday season!
by the awesome @instapatologia [Insta]
Have a Howelly-Jolly Christmas
A festive finding in the blood of an asplenic patient
A Howell–Jolly body is a cytopathological finding whereby small remnants of nuclear DNA are present in normally anuclear circulating erythrocytes.
During development in the bone marrow, late orthochromatophilic erythroblast normally expel their nuclei. However, in some cases, a small portion of DNA remains (the purple dots in the erythrocytes wearing the Santa hats).
Under normal circumstances if these irregular erythrocytes make it into the blood, they are removed from circulation by the spleen.
As a result, the presence of erythrocytes with Howell-Jolly bodies in peripheral blood smears like this usually signifies a damaged or absent spleen - because a healthy spleen would normally filter this type of red blood cell.
by exlibrisadpugno via reddit
Gingerbread Placenta
Run, run, run as fast as you can
You’ can’t catch me, I’m the chorionic villus gingerbread man!
The image shows a section through one of the many thousands of chorionic villi in the placenta that are responsible for the exchange of gas and nutrients with the maternal blood.
The mostly white space are the maternal blood lakes which are normally filled with mom’s blood while the small vessels (like gingerbread’s eyes and mouth) within the villus are branches of the umbilical vessels that shuttle blood back and forth to and from the growing baby.
The very thin cells lining the villus (gingerbread’s skin) are syncytiotrophoblast cells which gas must diffuse across in order to move from mom to baby and vice versa.
Histology by @BiopsyMD via Twitter
Rudolph the Red-Nosed Reindeer
Had a syncytiotrophoblast nose
And if you ever saw it
You would even say: “it forms the placental surface across which gases, nutrients & metabolites pass from the maternal circulation to enter the fetal circulation & vice versa”
This image shows many slices through the placental villi, fingerlike projections of the fetal-derived component of the human placenta. One of these villi looks like he’s been prohibited from participating in a variety of reindeer activities.
Rudolph’s core is composed of mesenchyme, an embryonic tissue that has the capacity to form tiny vessels (the tiny white holes) that are branches and tributaries of the umbilical arteries and vein that run in the umbilical cord and hook up with baby’s internal vascular plumbing.
The cell layer forming Rudolph’s skin (and his nose!) is called the syncytiotrophoblast layer. In the early placenta there are actually two layers (the outer syncytiotrophoblast and the inner cytotrophoblast). As the placenta matures the cytotrophoblasts thins and disappears leaving only the syncytiotrophoblast as the thin barrier between moms blood and those tiny fetal capillaries inside each villus.
But where is mom’s blood I hear you ask? Well, you can’t see it because it drained away once the placenta was removed and was sliced up. But… what you can see are the large ‘maternal blood lakes’ where her blood used to be (the large white spaces).
Now imagine all those fetal villi, and Rudolph, floating in those blood lakes and you can start to appreciate how efficient this arrangement is at allowing the exchange of gases and nutrients between mom and baby.
Students:
Histology:
- - - -
Those basic tissues are tough. But you have got this.
VERYSmooth Muscle
i♡histo
The Cytology Zoo
You can come too, too, too!
An exhibition of smears featuring some familiar looking squamous epithelial cell critters.
Can you recognize them all?
Cytology is the study of individual cells that have been isolated from a specimen. The technique is used mainly to study or screen for cancer but can be useful in the diagnosis of other diseases too, like those involving infectious organisms.
Most of the cells seen in a cytological smear or specimen are obtained in one of three ways:
- Scraping/Brushing the surface of a tissue (this is how cells are obtained from the uterine cervix during a pap smear)
- Collecting a fluid, this could be urine, mucus, blood or semen
- Fine-needle aspirations, this is when cells are removed by sucking them through a fine diameter needle. Fluid from the abdominal, pleural or pericardial cavities are obtained in this way and also cerebrospinal fluid during a lumbar puncture (or spinal tap).
The cells seen here are all squamous epithelial cells that are obtained from the cervix by scraping/brushing.
Credits:
@oreoimc (1-4) & (7-9)
@isac.p (5)
@sza_jhycto (6)
#histology #science #pathology #pathologists #anatomy #autopsy #zoo #animals #cytology #dentalschool #iquizhisto #premed #biology #medicaleducation #meded #nurse #nursing #medschool #medstudent #medicine #medlab #vetscience #vetschool #vetstudent #histologia #histotech #histo #pathArt #ihearthisto