BIO 233 - The Nervous System IV (Chapter 16)

The autonomic nervous system innervates all of these except _____

Skeletal muscle

Muscarinic receptors bind _____

Acetylcholine

All of the following cranial nerves except the _____ carry parasympathetic fibers

Hypoglossal

Which of the following cranial nerves carries sympathetic fibers?

Not oculomotor, facial, trigeminal, and vagus

Which of these ganglia is not involved in the sympathetic division?

Intramural

Epinephrine is secreted by _____

The adrenal medulla

The most important autonomic control center in the CNS is _____

The hypothalamus

The grey communicating ramus contains _____

Sympathetic postganglionic fibers

The neural crest gives rise to all of the following except _____

Parasympathetic postganglionic neurons

Which of these does not result from sympathetic stimulation?

Digestive secretion

Nerve fibers that secrete norepinephrine are called _____ fibers

Adrenergic

_____ is a state in which a target organ receives both sympathetic and parasympathetic fibers

Dual innervation

_____ is a state of continual background activity of the sympathetic and parasympathetic divisions

Autonomic time

Most parasympathetic preganglionic fibers are found in the _____ nerve

Vagus

The digestive tract has a semi-independent nervous system called the _____ nervous system

Enteric

The embryonic tissue that gives rise to all autonomic ganglia and postganglionic neurons, but not to any preganglionic neurons, is the _____

Neural crest

The adrenal medulla consists of modified postganglionic neurons of the _____ nervous system

Sympathetic

The sympathetic nervous system has short _____ and long _____ nerve fibers

Preganglionic, postganglionic

Orthostatic hypotension is the result of inefficiency of an autonomic reflex called the _____

Baroreceptor

Sympathetic stimulation of blood vessels maintains a state of partial vasoconstriction called _____

Vasomotor tone