The fundamental unit among them (not derived) is :
Its a large nuclear pore
so pores :)
Endorphins are brain chemicals
known as neurotransmitters which are released when the body feels a certain
amount of stress and pain. Endorphins alter the communication of pain in the
body by interacting with the opiate receptors and blocking the synapse so that signals
cannot be sent to the brain in order to reduce an individual perception of pain.
Answer:
The circulatory system consists of the heart, the arteries, veins, and capillaries.
Explanation:
