The strongest part of the body used for self defense is both the knee and the elbow.
your teeth
Reflexes are a part of the body's defense mechanism.
jaws
The strongest white blood cell in your body is considered to be the natural killer (NK) cell. NK cells are able to directly kill infected or cancerous cells without needing prior activation, making them a vital part of the immune system's first line of defense.
Foot
Jaws
The strongest part of a peacock's body is likely its legs, as they are used for walking, running, and jumping. Peacocks also use their legs for defending themselves from predators and during courtship displays.
true
antibodies
true
shoulders and arms from all the digging
The strongest part of the human body, if we consider the tissues themselves, would the the enamel in our teeth. That is the one part of the body that remains even after a body is severely decayed, or burned; as anyone familiar with forensics would tell you.