Discover and read the best of Twitter Threads about #anatomy

1/I call the skullbase “homebase” bc you can’t make an anatomy homerun without it!

Most know the arteries of the skullbase, but few know the veins. Do you?

Here’s a🧵to help you remember #skullbase venous #anatomy!
#medtwitter #meded #neurorad #radtwitter #neurosurgery #radres

2/When I look at the skullbase veins, I see an angry Santa yelling at me. His eyebrows are raised, his mouth is open, & he has a mustache w/a big beard hanging down.

Each I look at the skullbase, I look for this Santa—bc each part of him is an important venous structure.

3/So let’s start w/Santa’s eyes. The eyes are actually not a venous structure, but an important landmark—foramen ovale, where the V3 trigeminal nerve exit.

I remember ovale is Santa's eyes bc eyes are OVAL, so his eyes are OVALE

Read 8 tweets

1/I always say you can tell a bad read on a spine MR if it doesn’t talk about the lateral recess

What will I think when I see your read? What do you say about lateral recesses?

Here’s a #tweetorial on lateral recess #anatomy & grading stenosis
#medtwitter #neurorad #spine

2/First anatomy.

Thecal sac is like a highway, carrying the nerve roots down the lumbar spine.

Lateral recess is part of the lateral lumbar canal, which is essentially the exit for spinal nerve roots to get off the thecal sac highway & head out into the rest of the body

3/Exits have 3 main parts.

First is the deceleration lane, where the car slows down as it starts the process of exiting.

Then there is the off ramp itself.

The off ramp leads into the service road, which takes the car to the roads that it needs to get to its destination

Read 21 tweets

1/Does trying to remember inferior frontal gyrus anatomy leave you speechless?

Do you get a Broca’s aphasia trying to name the parts?

Here’s a #tweetorial to help you remember the #anatomy of this important region

#medtwitter #meded #neurotwitter #neurorad #radtwitter #radres

2/Anatomy of the inferior frontal gyrus (IFG) is best seen on the sagittal images, where it looks like the McDonald’s arches.

To find the IFG on MR, I open the sagittal images & scroll until I see the arches. When it comes to this method of finding the IFG, "i’m lovin it."

3/Inferior frontal gyrus also looks like a sideways 3 on sagittal images, if you prefer.

This 3 is helpful bc the inferior frontal gyrus has 3 parts—or "pars"

Read 13 tweets

1/Your baby’s all grown up! Cerebellum may mean “little cerebrum” but its jobs are anything but little

Do you know cerebellar anatomy beyond vermis & hemispheres?

Here’s a #tweetorial about the functional #anatomy of the cerebellum!
#medtwitter #neurotwitter #neurorad #meded

2/Cerebellum means “little cerebrum” or “little brain” bc it looks like a mini brain--a mini me to the cerebrum one might say.

However, it does not play a mini role. In fact, despite being significantly smaller than the cerebrum, it contains as many neurons as the cerebrum

3/When most people think of cerebellar function, they think of balance. And the first thing that comes to mind with cerebellar dysfunction is imbalance & dizziness.

However, the cerebellum is involved in much more, including cognitive functions

Read 17 tweets

Top Biomedical Science

@imedverse

Demystifying membrane anatomy: Towards a new era of abdominopelvic surgery

#TipsForNewDocs #MedEd #MedTwitter #medicine #medical #medicare #health #healthcare #FOAMed #ClinicalPearl #clinicaltips #MedStudents #surgery #surgeon #anatomy

cell.com/the-innovation…

Diagram of embryonic development and characteristics of membrane anatomy under laparoscopy

It will probably redefine the surgical scope of complete resections of pelvic tumors (cervical, rectal, and bladder cancer), improve nerve-sparing and pelvic floor reconstruction, and reduce operative bleeding and surgical injuries.

Read 6 tweets

Top Biomedical Science

@imedverse

Beautiful anatomy graphics from @medics_AbuSaif

#TipsForNewDocs #MedEd #MedTwitter #medicine #medical #medicare #health #healthcare #FOAMed #ClinicalPearl #clinicaltips #MedStudents #anatomy

Read 24 tweets

NephroPOCUS

@NephroP

Another set of cardiac #POCUS #anatomy illustrations. 🧵
#Nephpearls #FOAMed
Source: sciencedirect.com/science/articl…
1⃣ Parasternal long axis

2⃣ Parasternal short axis aortic valve level
#POCUS

3⃣ Apical 4-chamber view #POCUS

Read 7 tweets

NephroPOCUS

@NephroP

#POCUS image of the day:
Fox tail sign - left pleural effusion visualized from the apical cardiac window.
#MedEd #FOAMcc #FOAMed

#anatomy correlation

https://twitter.com/NephroP/status/1603885623009595392?s=20&t=yZNWjhuz8xFQphuslFQp5w

Read 3 tweets

1/Do questions about brainstem anatomy cause you to suddenly get a case of locked in syndrome?!

Do you try to localize the lesion or just wait for the MR?

Here’s a #tweetorial to help you w/brainstem #anatomy & localization!
#medtwitter #meded #neurotwitter #neurorad #radres

2/First some basic gross anatomy.

Brainstem from the side looks like a "dad bod"--the body you get after you have kids & the kids wear you down & you don’t exercise anymore.

Head & shoulders are the midbrain, potbelly is the pons, & fat thighs are the medulla

3/Midbrain is the head & shoulders.

This makes sense b/c the name “midbrain”—brain should be in the head.

Midbrain also has the cerebral peduncles which look like classic Mickey Mouse ears—and dads classically have big, usually hairy, ears

Read 24 tweets

1/Time to go with the flow!

Hoping no one notices you don’t know the anatomy of internal carotid (ICA)?

Do you say “carotid siphon” & hope no one asks for more detail?

Here’s a #tweetorial to help you w/ICA #anatomy!

#medtwitter #meded #neurotwitter #neurorad #radres #FOAMed

2/ICA is like a staircase—winding up through important anatomic regions like a staircase winding up to each floor

Lobby is the neck. First floor is skullbase/carotid canal. Next it stops at the cavernous sinus, before finally reaching the rooftop balcony of the intradural space

3/ICA is divided into numbered segments based on landmarks that denote transitions on its way up the floors.

C1 is in the lobby or neck.

You can remember this b/c the number 1 looks elongated & straight like a neck

Read 10 tweets

1/Talk about twisting your back! Do spine vascular lesions make your brain feel tangled like the dilated vessels you see?

Here’s a #tweetorial on #spine vascular #anatomy & dural arteriovenous fistulas (dAVF)

#medtwitter #meded #FOAMed #neurotwitter #neurosurgery #neurorad

2/To understand spinal dural AVFs, you need to understand basic spinal vascular anatomy.

The spine is LONG—to get blood from the top of the cord to the bottom is like going through the length of a marathon course

3/So we will need to tackle it like you tackle running a marathon.

When you run a marathon, you replenish yourself at aid/water stations along the way so you can make it all the way through.

Same w/spinal arterial vasculature—it needs to be replenished on the way down.

Read 19 tweets

RMR

Midbrain Syndromes: Parinaud, Weber, Benedikt, Claude and Nothnagel.
🧠🥸🤔

#NewYearNewThread

#Neurology #Anatomy #Neurotwitter #History

1/🧵

Before we describe the main characteristics of these syndromes, it is improtant not to forget the main structures present in this region. ⚠️

Note: this is not a neuroanatomy 🧵

2/🧵

Structures not to forget at this level:

1️⃣ Corticospinal tract: motor function (contralateral)
2️⃣ Oculomotor nucleus: CN III👀
3️⃣ 🔴 Nucleus: rubrospinal tract 🦾 (arm flexion)
4️⃣ Subst Nigra: basal ganglia relay (more complex than that)
5️⃣ Inf Colliculus

2/🧵

Read 24 tweets

NephroPOCUS

@NephroP

#POCUS quiz
You are performing physical examination in a patient with suspected fluid overload (plethoric IVC).
Parasternal short axis view demonstrates D-sign. But what's in the RV?
Apical view in thread.
#Nephrology #MedEd #FOAMcc
🔗 to source will be posted in a few hours.

Apical #POCUS

As our friends said, it's prominent moderator band in a patient with RV hypertrophy + prominent trabeculae.
Source article 🔗cvcasejournal.com/action/showPdf…

Read 4 tweets

RMR

Frontal lobe: anatomy, history, Edgar Allan Poe and beyond, why not?
🧠📝✍️🕵️

Part 2: Areas and connections

"For the moon never beams, without bringing me dreams of the beautiful Annabel Lee." E. A. Poe.

#Neurology #Anatomy #Teaching #EndNeurophobia #Neurotwitter

1/🧵

⚠️Disclaimer:
Due to the complexity of this structure, this tweetorial is composed of three main parts.

1️⃣ Gross anatomy and microscopic anatomy (sort of)
2️⃣ Areas and connections
3️⃣ Clinical Syndromes and curiosities

Hope you enjoy!

2/🧵

Do you remember last Tweetorial's question?

Exner's area 🧠📝🥸

Described in 1881, the area located close to the superior frontal sulcus in BA6, anterior to the hand primary motor area, has been involved in the handwritten production of words.
📜

3/🧵

Read 34 tweets

1/Ready for a throwdown? MMA fights get a lot of attention, but MMA (middle meningeal art) & dural blood supply doesn’t get the attention it deserves.

A #tweetorial on dural vascular #anatomy

#neurosurgery #neurorad #Neurointervention #radres #medtwitter #neurotwitter #meded

2/Everyone knows about the blood supply to the brain. Circle of Willis anatomy is king and loved by everyone, while the vascular anatomy of the blood supply to the dura is the poor, wicked step child of vascular anatomy that is often forgotten

3/But dural vascular anatomy & supply are important, especially now that MMA embolizations are common for chronic recurrent subdurals. It also important for understanding dural arteriovenous fistulas as well.

Read 17 tweets

RMR

Frontal lobe: anatomy, history, Edgar Allan Poe and beyond, why not?
🧠📝✍️🕵️

Part 1: gross anatomy

"All that we see or seem is but a dream within a dream." - E. A. Poe.

#Neurology #Anatomy #Teaching #EndNeurophobia #Neurotwitter

1/🧵

⚠️Disclaimer:
Due to the complexity of this structure, this tweetorial will be composed of three main parts.

1️⃣ Gross anatomy and microscopic anatomy (sort of)
2️⃣ Areas and connections
3️⃣ Clinical Syndromes and curiosities

Hope you enjoy!

2/🧵

⚠️Before we begin, a great quote about this amazing part of the human brain. 👇⬇️

3/🧵

Read 13 tweets

RMR

Anatomy of the cerebellum: the arbor vitae and more. 🧠🌳

🤔🧑‍🏫

#Neurology #Neurotwitter #Anatomy #Teaching #EndNeurophobia

Image from Bolk's "Das Cerebellum der Säugetiere" (1906)

1/🧵

Introduction

Part of the brain in charge of integration of massive sensory and other inputs from many regions of the brain and spinal cord.

Also called "little brain" due to it's etimological origin. 🧠

2/🧵

Introduction

👷‍♂️ Functions?

- Motor coordination 💪👀🤹‍♀️
- Motor planning 🤔
- Cognitive functions (visuospatial, executive, etc)
- Speech 🗣️

3/🧵

Read 28 tweets

1/They say form follows function! Brain #MRI anatomy is best understood in terms of both form & function

A #tweetorial on how to remember important functional #brain #anatomy

#meded #medtwitter #neurosurgery #neurology #neurorad #FOAMed #FOAMrad #radiology #medstudent #radres

2/Let’s start at the top. At the vertex is the superior frontal gyrus. This is easy to remember, bc it’s at the top—and being at the top is superior. It’s like the superior king at the top of the vertex.

3/It is also easy to recognize on imaging. It looks like a big thumb pointing straight up out of the brain. I always look for that thumbs up when I am looking for the superior frontal gyrus (SFG)

Read 12 tweets