usmleaid
usmleaid:

Innervation of the Tongue


They go in order: V, VII, IX, XII
V & VII: anterior 2/3
V: V3 lingual branch, sensory
VII: chorda timpani branch, taste.
I always mix up these 2, so in order to remember that VII (Facial N.) is for taste, just remember this menmonic:
"I want to taste Michael Fassbender’s face”


who doesn’t?
IX: posterior 1/3, for both taste & sensory
XII: motor

usmleaid:

Innervation of the Tongue

They go in order: V, VII, IX, XII

  • V & VII: anterior 2/3
  • V: V3 lingual branch, sensory
  • VII: chorda timpani branch, taste.

I always mix up these 2, so in order to remember that VII (Facial N.) is for taste, just remember this menmonic:

"I want to taste Michael Fassbender’s face”

who doesn’t?

  • IX: posterior 1/3, for both taste sensory
  • XII: motor
cluelessmedic

cluelessmedic:

Meckel’s Diverticulum

  • remnant of the omphalomesenteric duct (vitelline duct) from embryonic development
  • usually asymptomatic but if narrow base can obstruct causing meckels diverticulitis
  • this can present similarly to appendicitis or with rectal bleeding, bowel obstruction or later in life with malignancy

Rule of 2’s

  • 2% of population affected
  • inches long
  • feet from ileocaecal valve
  • 2 types of ectopic tissue (gastric, pancreatic)
  • years of age = most common age for presentation
  • 2:1 ratio of boys:girls affected
post-it-note-medicine
post-it-note-medicine:

I think I might be the only person who always gets this mixed up. All the intrinsic muscles of the hand are supplied by the ulnar nerve, except the LOAF muscles, which are median nerve. I tended not to remember which way round this was….
Now I will NEVER forget!
LOAF muscles:
Lumbricals 1&2
Opponens pollicis
Abducens pollicis 
Flexor policis brevis 
This is clinically relevant in carpal tunnel syndrome. They make up the thenar eminence, the bulgy bit on your palm below your thumb, and can appear wasted in chronic median nerve palsy. 

post-it-note-medicine:

I think I might be the only person who always gets this mixed up. All the intrinsic muscles of the hand are supplied by the ulnar nerve, except the LOAF muscles, which are median nerve. I tended not to remember which way round this was….

Now I will NEVER forget!

LOAF muscles:

  • Lumbricals 1&2
  • Opponens pollicis
  • Abducens pollicis 
  • Flexor policis brevis 

This is clinically relevant in carpal tunnel syndrome. They make up the thenar eminence, the bulgy bit on your palm below your thumb, and can appear wasted in chronic median nerve palsy. 

medicowesome

medicowesome:

Hey guys!
Did you know that the right gonadal vein, right suprarenal vein and the right inferior phrenic vein drain into the Inferior Vena Cava?
Really? Then where do the left sided veins drain?
Left renal vein!
How do I remember this? @_@
I use the “RIVer” buzzword to remember Right sided veins drain into the IVC.

That’s all!

The fact that the left gonadal vein (testicular vein) drains in the left renal vein is particularly high yield because 98% of idiopathic varicoceles occur on the left side.

-IkaN

medicalschool
medicalschool:

The above EKG shows an example of complete heart block. This rhythm is an idioventricular rhythm. The distinguishing characteristic is that no P waves from the atria are conducted to the ventricles. A careful examination will show that the PR interval is random as a result of there being no relationship between the P wave and the QRS complex. This is also referred to as AV dissociation. The QRS complex in this rhythm actually originates in the ventricles (we know this because there is no relationship between the P wave and the QRS and because the QRS complex is wide, nearly .36 seconds) and the effective heart rate is 33 beats per minute.

medicalschool:

The above EKG shows an example of complete heart block. This rhythm is an idioventricular rhythm. The distinguishing characteristic is that no P waves from the atria are conducted to the ventricles. A careful examination will show that the PR interval is random as a result of there being no relationship between the P wave and the QRS complex. This is also referred to as AV dissociation. The QRS complex in this rhythm actually originates in the ventricles (we know this because there is no relationship between the P wave and the QRS and because the QRS complex is wide, nearly .36 seconds) and the effective heart rate is 33 beats per minute.