Structural & Functional Organization of the ANS Flashcards
the Somatic Nervous System controls what
Controls skeletal muscle
Conscious, voluntary control
Motor pathway from somatic nervous system is from
one neuron from CNS to effector
The axon of a single somatic motor neuron extends from
CNS all the way to skeletal
muscle fibers
Somatic Sensory Pathways Relay sensory information from
periphery to cerebral cortex
how many neurons are somatic sensory pathway
Three neurons in each pathway
Somatic Sensory Pathways neuron body #1
in dorsal root ganglion
Somatic Sensory Pathways neuron body #2
in spinal cord or brain stem
Somatic Sensory Pathways neuron body #3
in thalamus; axon extends to cerebral cortex (somatosensory area in postcentral gyrus)
Posterior column - medial lemniscus pathway senses is responsible for
Senses touch, pressure, vibration, and conscious proprioception
Anterior spinothalamic tracts is responsible for
Light touch sensation
Deep pressure sensation
Lateral spinothalamic tract is responsible for
Pain Sensation
Temperature (hot vs cold) sensation
Upper motor neurons of the Somatic Motor Pathways travel via what
corticospinal tracts
Upper motor neurons of the Somatic Motor Pathway receive information from
Basal ganglia: Help with muscle tone
Cerebellum: Coordination
Sensory neurons or interneurons via
reflexes
Autonomic Nervous System is regulated by what
hypothalamus and brainstem
Autonomic Nervous System Controls what
viscera:
Smooth and cardiac muscle, and sweat and digestive glands
