Inside the Mediastinum of Information Retention

In the course of studying one often comes across facts, words or phrases they should know or would like to know but simply cannot remember. For these we often come up with mnemonic devices if it's too difficult. But - what about when you can't seem to think of one? What about if you can think of a reminder for one part of a word but not another?

Today I offer you a small list of words that I simply cannot seem to remember. I will keep trying but I have to admit, I am ready to throw these flashcards out. (I study by flashcard.) If you get an idea for one of them... please, please, please feel free to let me know...

mediastinum (the space between the lungs)

scalenes (an accessory muscle used during physical activity)

serratus (part of a muscle name - important during expiration, I have no trouble recalling the second part of the muscle name - posterior)

atrioventricular (the OTHER name for two of the valves in your heart - though this is my least difficult)

And here's my favorite:

sternocleidomastoid (another accessory muscle; maybe I should just write this fifty times on the board...)