Lecture Exam #2 Flashcards
divisions of the Autonomic Nervous System
sympathetic, parasympathetic
divisions of the motor nervous system
autonomic, somatic
autonomic nervous system is under ____ control
involuntary
smooth muscle, heart, glands
somatic nervous system is under ____ control
voluntary
skeletal muscle
somatic nervous system includes ____ perceived or controlled processes
consciously
divisions of the somatic nervous system
somatic sensory, somatic motor
somatic sensory
detects signals from special senses
vision, hearing, equilibrium, smell, taste
somatic motor
sends signals from CNS to skeletal muscles
in the somatic motor system, voluntary movements are involved in the ____
cerebrum
in the somatic motor system, reflexive movements are involved in the _____
brainstem and spinal cord
the autonomic nervous system transmits signals from the CNS to….
heart, smooth muscle, glands
order of ganglionic neurons
- ) preganglionic autonomic motor neuron
- ) ganglionic autonomic motor neuron
- ) smooth muscle, heart, glands
A single lower motor neuron extends from CNS to
skeletal muscle fibers
what does the autonomic nervous system use in order to reach an effector?
a chain of two motor neurons
preganglionic & postganglionic
the preganglionic neuron releases ____ from synaptic knob, to excite the second motor neuron
Acetylcholine (ACh)
the postganglionic neuron releases ____ or _____ from synaptic knob to either _____ or _____ the effector
- ACh or norepinephrine
- excite or inhibit
neuronal convergence
multiple preganglionic neurons synapsing on one ganglionic neuron
neuronal divergence
branches of axon from one preganglionic neuron synapsing with numerous ganglionic neurons
the autonomic nervous system controls which organs?
visceral
what part of the brain controls both divisions of the autonomic nervous system?
hypothalamus
the autonomic nervous system is regulated by?
parts of the brain and spinal cord
fight or flight
sympathetic nervous system
rest and digest
parasympathetic nervous system
visceral reflexes are mediated by…?
brainstem nuclei
ANS reflexes are governed by…?
spinal cord
the ______ contains major ANS reflex centers
brainstem
contains ANS reflex centers for defecation and urination
spinal cord
short preganglionic axon, long postganglionic axon
sympathetic division
long preganglionic axon, short postganglionic axon
parasympathetic division
what do preganglionic cells stimulate in order to release epinephrine and norepinephrine into the blood?
adrenal medulla
what two neurotransmitters does the autonomic nervous system use?
ACh and norepineprhine
cells that release ACh
All ANS preganglionic neurons
All parasympathetic ganglionic neurons
Sympathetic ganglionic neurons innervating sweat glands and blood vessels in skeletal muscle
