4.4 neuro - autonomics Flashcards
What does the autonomic nervous system innervate
glands, heart, viscera, smooth muscles
What are the two division of the autonomic nervous system
Parasympathetic, sympathetic
true/false Autonomic sensory neurons send information to the autonomic system
false; there are no autonomic sensory neurons, visceral neurons send information to integrating centers in the CNS
Define homeostatsis
maintenance of a dynamically stable state within a system by means of internal regulatory processes that counteract external disturbances of the equilibrium
What does the hypothalamus do
maintains homeostasis by controlling the endocrine system, autonomic nervous system, and behaviors necessary for survival
What brain structure is the hypothalamus a part of
Diencephalon
Sympathetic vs parasympathetic
sympathetic: fight or flight
para: rest and digest
The autonomic nervous system is a __ (#) neuron pathways and the somatic nervous system is a __ (#) neuron pathway
2 (synapse in an autonomic ganglian); 1
What does the somatic nervous system innervate
skeletal muscle
compare and contrast somatic, sympathetic, and parasympathetic nervous system pre and post ganglia length
somatic: no ganglia
sympathetic: short pre, long post ganglionic fibers
para: long pre, short post ganglionic fibers
compare and contrast somatic, sympathetic, and parasympathetic nervous system distribution / reach
somatic: whole body
sympathetic: whole body
para: restricted
compare and contrast somatic, sympathetic, and parasympathetic nervous system neurotransmitters
somatic: acetylcholine
sympathetic: preganglionic acetylcholine, postganglionic norepinephrine
para: preganglionic acetylcholine, postganglionic acetylcholine
compare and contrast somatic, sympathetic, and parasympathetic nervous system synapses
somatic: neuromuscular junction
sympathetic / para: boutons en passant (wave of depolarization and wave of contraction within smooth muscles)
