Autonomic Nervous System

Where are sympathetic fibers distributed and where are parasympathetic fibers distributed?

1) Sympathetic fibers are distributed throughout the whole body (sweat glands) 2) Parasympathetic fibers stay mainly internal and don't go into the extremities or body walls

What is the neurotransmitter used by both the para NS and the sym NS on the preganglionic synapse?

Acetylcholine

Central Nervous System

Brain and Spinal Cord

Anatomical Divisions of the Nervous System

Central nervous system and Peripheral nervous sytem

In a two neuron system where does the first neuron lie?

In the central nervous system.

The PNS relates mosts to _____________ functions.

Motor, involuntary (sympathetic or parasympathetic) or voluntary

Peripheral Nervous System

Nerves that leave the brain (cranial nerves) and nerves that leave the spinal cord (spinal nerves)

The CNS relates mostly to ______________ functions.

Sensory

Two components of the Autonomic Nervous System

Sympathetic Nervous System, Parasympathetic Nervous System

Which autonomic nervous system division has long preganglionic fibers and short postganglionic fibers?

The parasympathetic nervous system's fibers

Autonomic Nervous System

The portion of the peripheral nervous system that involuntary motor impulses make up. (smooth muscle, cardiac muscles, glands, etc.)

Which autonomic nervous system division has short preganglionic fibers and long postganglionic fibers?

The sympathetic nervous system's fibers

Both parasympathetic and sympathetic Nervous systems innervate what type of muscle?

cardiac muscle, smooth muscle, and glandsIn

Sympathetic Nervous system mainly functions for

fight or flight responses, or stress response

The sole mission in life of a preganglionic axon is to _______________________.

find a ganglion to synapse in

Motor Fibers

nerve fibers that bring information from the CNS into the PNS

Sensory Fibers

nerve fibers that bring information from the PNS into the CNS

What is the transmitter used by the sympathetic NS on the postganglionic synapse?

norepinephrine

In a two neuron system where does the second neuron lie?

outside of the CNS in a group of cells called ganglion

Parasympathetic Nervous system mainly functions for

rest and digest responses, or homeostasis

The parasympathetic nervous system originates from _____________.

the craniosacral origin, or Cranial Nerves 3, 7, 9, 10 and sacral nerves 2,3,4

What were ganglion embryonically formed by?

the neural crest cells

What was the CNS embryonically formed by?

the neuroectoderm

The sympathetic nervous system originates from _____________.

the thoracolumbar origin, or Thoracic nerves 1-12 and Lumbar nerves 1&2