Action Potentials and Synapses Quiz

A synapse is a specialized region of communication between two ______, at least one of which is an excitable cell.

In an electrical synapse, ionic current can pass directly between the two cells by means of ______ junctions, allowing AP propagation.

Gap junctions are found between cardiac muscle cells, between some types of smooth muscle cells, and in some cases between ______.

Even 'fast' chemical synapses incur a synaptic delay, of perhaps 0.5 to 2 ______.

The neuromuscular junction is an important model for the study of fast synaptic transmission, also referred to as ______ transmission because it involves opening ion channels directly.

Metabotropic transmission, which is slower, involves second messengers which may modulate ______ activity.

All the fibres innervated by the same axon will contract together and are referred to collectively as a ______ unit

Do plants have anything analogous to electrical synapses between cells in animals?

Each NMJ consists of a branching axon terminal, contained within a gutter in the muscle fibre ______

The transmitter acetylcholine (ACh) is released from a number of swellings called terminal ______ within the end-plate

The post-synaptic membrane contains, on the crests of the junctional folds, a high density of nicotinic acetylcholine receptors (NAChR), which are ligand-gated ion ______

Having diffused across the synaptic cleft, one ACh molecule must bind to each of the α subunits to cause the channel to ______