Chapter 9 The Autonomic Nervous System

Which tissue is controlled by the somatic nervous system?

Skeletal muscle

The autonomic nervous system primarily regulates

Internal organ function

Autonomic motor pathways contain

Two neurons connected by a ganglion

Preganglionic sympathetic neurons originate in the

Thoracic and lumbar spinal cord

The parasympathetic division is often called the

Rest-and-digest system

Which neurotransmitter is released by all preganglionic autonomic neurons?

Acetylcholine

Most postganglionic sympathetic neurons release

Norepinephrine

Neurons that release acetylcholine are called

Cholinergic

Which is NOT a catecholamine?

Acetylcholine

The neurotransmitter released at autonomic ganglia is

Acetylcholine

Which cranial nerve carries important visceral sensory information?

CN X

Loss of autonomic innervation often causes

Denervation hypersensitivity

Which structure contains neurotransmitter-filled vesicles along autonomic axons?

Varicosities

The term "synapses en passant" refers to neurotransmitter release

Along the length of the axon

A drug that mimics sympathetic activity is called

Sympathomimetic

Epinephrine differs structurally from norepinephrine because epinephrine contains

An extra methyl group

Which organ can continue functioning even after loss of autonomic innervation?

Heart

Most postganglionic parasympathetic neurons release

Acetylcholine

The sympathetic nervous system is also known as the

Thoracolumbar division

Which pairing is correct?

Cholinergic—acetylcholine