RCA stands for the Radio Corp. of America. The jack was their invention and has been around for a long time. A din plug was invented in Germany and it stands for Deutches Institut fur Normung. The plug is widely used now but does not hold a patent.
The auditory canal is your inner ear - the part inside your cranium. Patent means open. A widely patent auditory canal would be one that is especially wide/open/large.
Bump
open and unobstructed
There are two carotid arteries that carry blood from the heart to the brain. A widely patent carotid artery is one that open, unobstructed and that allows the free passage of blood through the artery.
It's good news -- no spinal stenosis.
open and unobstructed
Proximal means closer to the origin of the limb, so the knee is proximal to the ankle, and the wrist is proximal to the thumb.
Proximal
No clot or other blockage was found in the right deep femoral aftery. Good news.
Proximal, anything closer to midsection in proximal (closer) than distal (distant).
proximal ?