Postganglionic Neurons of the Parasympathetic Nervous System Primarily Secrete Acetylcholine

question 24

True/False

Postganglionic neurons of the parasympathetic nervous system primarily secrete acetylcholine, while postganglionic neurons of the sympathetic nervous system primarily secrete norepinephrine.

---

Definitions:

Skeletal Muscle

A type of striated muscle attached to the skeleton that facilitates movement through contraction.

Smooth Muscle

A type of muscle tissue which is not under voluntary control and is found in the walls of internal organs.

Cardiac Muscle

A specialized type of muscle found only in the heart, characterized by its ability to contract involuntarily and rhythmically.

Neuromuscular Junctions

Specialized synapses between motor neurons and skeletal muscle fibers, crucial for initiating muscle contraction.