Basic Sciences

Pterygoid muscles: Function of lateral vs medial

 It's easy. Look at how your jaw ends up when saying the first syllable of lateral and medial.

  • "La": your jaw is now open, so lateral opens mouth.
  • "Me": your jaw is still closed, so medial closes the mouth.
4.5

Diaphragm apertures: Spinal levels

"AEI-OU" Diaphragm

 

Aorta: T12

Esophagus: T10

Inferior Vene cava: T8

OU can be used to remember  that its On moving Up from T12.

 

Or,

 

"Voice Of America"

In order, from lower to higher vertebral levels, 

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Brachioradialis: BR rule

"BrachioRadialis follows the BR rule"

Function
: Its the Beer mug Raising muscle (i.e,flexes elbow, strongest when wrist is held  for holding a beer mug.)
Innervation: Breaks Rule: it's a flexor muscle, But Radial.
(Radial nerve usually is for extensors).
One relation: Behind it is the Radial nerve in the cubital fossa.

3.5

Biceps brachii muscle: Origin

"You walk Shorter to a street Corner. You ride Longer on a Superhighway":
 

  • Short head originates from Coracoid process.
  •  Long head originates from the Supraglenoid cavity.

 

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