B. Indicate which organ system is responsible of the following situation situations below.
Write the beginning letter of correct organ system on the blank.

C-circulatory
R-respiratory
N-nervous


1. I easily salivated every time i saw someone eating green mangoes.
2. His father's blood pressure increases due to over exposure to heat.
3. Your breathing is getting faster and faster,
4. Ouch! You accidentally tripped and scraped your knee.
5. The heart is pumping fast as you sprint for the final 1km. Congratulations! You
have won the race!​