Connexons of gap junctions in electric synapses a- are Ligand-gatedb- are voltage-gatedc- allow transmission of potential changes in both directions between the pre- and post- synaptic neuronsd- close whenever the presynaptic neuron becomes hyperpolarized

Which of these descriptions about gap junctions are TRUE? Choose all the correct answers.Group of answer choicesThey allow cells to be electrically continuous for rapid communication of electrical impulses e.g. in optical relay neurons.They allow for co-ordinated behaviour of tissue e.g. co-ordination of heart beat.They can be voltage or ligand gated.They actively generate electrical potentials.

Synapses are tiny spaces between neurons; the gap between neurons is referred to as a(n) (neurotic/synaptic) gap.

Synapses in which gap junctions allow ions to diffuse quickly from cell to cell are called ______ synapses.Multiple Choicechemicalelectrical

Chemical synapses in the nervous system a- allow diffusion of chemical substances form the presynaptic neuron into the postsynaptic neuronb- allow transmission of potential changes in one direction only; from the presynaptic to the postsynaptic neuronsc- have potential-gated ionic channelsd- are more numerous in the peripheral nervous system than the central nervous system

The is a gap between two neurons where neurotransmitters are released.