The saclike structures found inside the synaptic knob containing chemicals are called__________

A) axon terminals.
B) synapses.
C) synaptic vesicles.
D) receptor sites.

Saclike Structures

Biological pouches in organisms that serve various functions such as storage, digestion, or transport of substances.

Synaptic Knob

The small, bulbous structure at the end of a neuron's axon that releases neurotransmitters to transmit signals to another neuron.

Synaptic Vesicles

Membrane-bound sacs within a neuron that contain neurotransmitters, which are released into the synaptic cleft to transmit signals to other neurons.