Explanation:
The articular surfaces of the bones are connected by strong collateral ligaments. The best examples of ginglymoid joints are the Interphalangeal joints of the hand and those of the foot and the joint between the humerus and ulna.
Confirmatory Tests vary, and may be wrong from time to time. As time passes, the test is not as reliable as stated. If the so called "blood" is on a leather surface, blood isn't too prone to sticking to leather, so it may (or may not) be blood.
Galen was a renew physician during the Middle Ages and Hippocrates believe that there are four humor in the body that which brings balance for a healthy life
Blood
Yellow bile
Black bile
Phlegm
