Question

Axonal transport refers to the

release of neurotransmitters into the synaptic cleft.

use of microtubules to send secretions from the cell body to the axon terminal.

movement of organelles and cytoplasm up and down the axon.

movement of the axon terminal to synapse with a new postsynaptic cell.

none of these.

Answer 1

Axonal transport refers to the movement of organelles and cytoplasm along the axon, which is facilitated by microtubule motor proteins and is vital for neuronal function. So, the correct option is c) movement of organelles and cytoplasm up and down the axon.

Step-by-step explanation:

Axonal transport refers to the movement of organelles and cytoplasm up and down the axon, which is option c) of your multiple-choice question. This process is essential for the function of neurons, as it allows for the proper distribution of materials necessary for neuronal function, such as neurotransmitters, from the cell body to the axon terminal and vice versa. Microtubule motor proteins such as kinesin and dynein are instrumental in this process, as they carry various cargoes, including synaptic vesicles packed with neurotransmitters, along the axonal microtubules to their destinations.