Question

Synaptic knob possesses

• A. Granular vesicles
• B. Nissl's vesicles
• C. Synaptic vesicles
• D. None of these

Answer 1

The correct option is C

Synaptic vesicles

The correct option is C.

Explanation of correct option:

1. The synaptic knob is a bulb-like structure that is present at the end of the axon in a neuron.
2. It consists of mitochondria and synaptic vesicles (small granules).
3. The synaptic vesicles contain chemicals called neurotransmitters that transmit signals to postsynaptic neurons.

Explanation of incorrect options:

Option A:

1. A vesicle is a membrane-bound compartment that can be empty or filled with a rare and/or electron-lucid substance.
2. Granules are membrane-bound as well, but their contents are electron-dense.

Option B:

1. Nissl's vesicles are found in the cytoplasm of the neuron's cell body.
2. They are large granular bodies that are helpful in protein synthesis and transport these proteins to the cyton.

Final answer: Synaptic knob possesses synaptic vesicles.