*`IMPORTANT BIOLOGY POINTS`*🧬🧫 ●》 *Life Span of RBCs* = _120 Days_ ●》 *Life Span of WBCs*= _10–15 Days_ ●》 *Largest WBC*= _Monocyte_ ●》 *Smallest WBC*= _Lymphocyte_ ●》 *Smallest Muscles*= _stapedios_ ●》 *Total Bones*= _206_ ●》 *Total Muscles*= _639_ ●》 *Life Span of Platlets*= _7–10 Days_ ●》 *River of Life* = _Blood_ ●》 *Rate of Breathing*= _12–16 times per minute_ ●》 *Total Number of Chromosomes* = _46_ ●》 *Amount of Blood*= _5–6 Litres_