Biologists call those groups DOMAINS
They are paired, placed in launae and have canaliculi to receive and send nutritive materials to matrix.
Most of the brain's excitatory ionotropic synapses use the neurotransmitter glutamate.
The best correct answer is C.
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Answer:
Blood is carried away from the heart by arteries. Blood that is rich in oxygen. Blood that is low in oxygen is returned to the heart by veins. there is more pressure in arteries than in veins.
