Rather than tightly coupled synapses between neurons and muscle cells, single-unit smooth muscle contains
A) gap junctions that connect neurons to smooth muscle cells.
B) varicosities of a subset of muscle fibers so that individual cells can be separately stimulated.
C) diffuse junctions where neuron varicosities are responsible for neurotransmitter release.
D) plaques and caveolae that contain multiple hormone receptors for discrete endocrine control.

Question

Quizplus · Accepted Answer

Single-unit smooth muscle contains diffuse junctions where neuron varicosities release neurotransmitters, allowing for coordinated contraction of the muscle tissue.

Rather Than Tightly Coupled Synapses Between Neurons and Muscle Cells