Question

In the following diagram showing axon terminal and synapse A, B, C, D and E respectively represents:

• A. Axon terminal, synaptic cleft, synaptic vesicles, neurotransmitters and receptors.
• B. Axon terminal, synaptic vesicles, synaptic cleft, receptors and neurotransmitters.
• C. Synaptic cleft, synaptic vesicles, axon terminal, neurotransmitters and receptors.
• D. Synaptic cleft, axon terminal, synaptic vesicles, neurotransmitters and receptors.

Answer 1

The correct option is B

Axon terminal, synaptic vesicles, synaptic cleft, receptors and neurotransmitters.

The correct option is B:

Explanation of the correct option:

A- Axon terminal

1. Axon terminal are tiny swellings located at the terminal of axons.
2. They are associated with synapses and neurotransmitters are stored there to interact and communicate with other neurons.

B- Synaptic vesicles

1. They are small vesicles located at the presynaptic terminals.
2. These vesicles store neurotransmitters for transmission of electric signals between synapses.

C- Synaptic cleft

1. It is a space that separates the presynaptic and the postsynaptic neuron.
2. It forms a junction between the two neurons for the transmission of nerve impulses.

D- Receptors

1. Receptors are located at the membranes of presynaptic and postsynaptic neurons.
2. They bind to the neurotransmitters and helps in initiating a channel opening.

E- Neurotransmitters

Neurotransmitters are chemical signaling molecules produced by a neuron that affect other neuron across the synapse.

Final answer: The correct labeling of the diagram is: A-Axon terminal, B-synaptic vesicles, C-synaptic cleft, D-receptors and E-neurotransmitters.