Motivation Muscle Review Questions A&P Lab Il Quiz 3 Written Gast
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Terms in this set (143)
The CNS consists of a brain and spinal cord (integrating command center)
innervate to supply with nerves
nerves extending from the brain and spinal cord and it includes the somatic,
The peripheral nervous system consists of autonomic, and sensory
function of the PNS Peripheral nerves link all regions of the body to the CNS
|somatic efferent; skeletal muscle
|autonomic efferent; cardiac and smooth muscle/ glands
What is the autonomic nervous system also
the Visceral Nervous System
known as?
smooth muscle, cardiac muscle, glands, and adipose (fat cells)
What does the autonomic nervous system
control?
parasympathetic and sympathetic nervous systems
2 divisions of the autonomic nervous system
Both innervate most organs and they regulate organs to maintain homeostasis; both
What do the Parasympathetic and oppose each other
Sympathetic Nervous Systems have in
common?
1. 2 neurons from CNS to organs: Preganglionic and Postganglionic
2. Autonomic ganglia: Synapse between pre- and postganglionic neurons occurs in
Anatomy of the Autonomic Nervous System ganglia
3. Axons of postganglionic neurons innervate target organs
ganglia collection of neuron cell bodies outside central nervous system
In the thoracic and lumbar regions of the spinal cord
In the Sympathetic Nervous system, where
do Pre-ganglionic neurons originate
What do the long post ganglionic form? chains to the effector organs
Where are most ganglia linked together? In the sympathetic chain
Adrenal Medulla secretes epinephrine (adrenaline); no post ganglionic axons
What do preganglionic neurons release? acetylcholine (ACH)
binds receptors on post ganglionic cell (receptors call cholinergic receptors); cause
functions of preganglionic neurons action potentials by stimulating post ganglionic cells)
What do post-ganglionic neurons release? Norepinephrine (NE)
Function of post ganglionic neurons Binds to target cells; receptors are called adrenergic receptors
2 main classes of adrenergic receptors alpha and beta