hence, the funny bone
The upper arm bone is the humerus, nicknamed the "funny bone" because of its similarity to the word "humorous".
What can cause severe upper arm pain (periodic aching between elbow and shoulder, sometimes pain going down arm and into shoulder)?
see a doctor
neck and left arm aches related to angina ,
severe pain and swelling.
The humerus is informally referred to as the upper-arm bone.
Common causes of upper arm pain below the shoulder include muscle strains, tendonitis, rotator cuff injuries, bursitis, and nerve compression.
The humerus. Edit: Its the humerus its easy to remember because of the phrase "funny bone" funny=humorous=humerus
Kittens
The upper arm bone between elbow and shoulder.
The humerous is a single large bone that extends from the elbow to the shoulder. It is sometimes called the 'funny bone' , because when struck in a certain way you can have a 'funny' nerve tingling sensation. Humour/ funny.
You would for sure on the lower arm to keep the arm raised to minimize swelling and pain. It will have no affect for the upper arm (above the elbow).