Given below are two statements.

Statement I  : Each branch of dendrite divides into a cluster of bulb-like synaptic knobs.

Statement II : Each synaptic knob has many membrane-enclosed sacs called synaptic vesicles. 

In light of the above statements, choose the correct answer from the options given below.

Statement I is incorrect but statement II is correct. 

Axon terminal divides into a cluster of synaptic end bulbs. Synaptic knobs, also known as synaptic terminals or boutons, contain membrane-enclosed sacs called synaptic vesicles. These vesicles store neurotransmitters, which are released into the synaptic cleft when an action potential reaches the synaptic knob, allowing communication between neurons.