Actually circulatory system- and it is H E A R T.
The respiratory system starts at the nose (and mouth) and ends at the alveoli in the lungs
The gaming logo that starts with b and ends with d and has 8 letters is "blizzard entertainment."
arc
into
AVIA
pee has 3 letters
The word that starts and ends with an e is epguide.
Toxoplasma
absinthe
The "alphabet".
earthworms
earthquake