Answer Happy

Based on the flexion reflex pathway shown in the figure, which of the following does NOT reside in the CNS? Spinal cord Ascending pathways to brain Gray matter Spinal White cord matter Alphamotorg neurons Nociceptor Painful stimulus Sensory neuron Extensors inhibited- Flexors contract, moving foot away from painful stimulus. a) The axons of interneurons Ob) The dendrites of efferent neurons Oc) The cell bodies of sensory neurons d) The dendrites of interneurons e) The cell bodies of efferent neurons Extensors contract as weight shifts to left leg. -Flexors inhibited
Microvilli are present on transporting epithelial cells to increase membrane surface area. Which structure(s) on a neuron provide a comparable benefit? a) mushroom-shaped dendritic spines b) long, thin axon Oc) multiple myelin segments d) cone-shaped axon hillock e) pyramidal cell body Question 3 (1 point) The following parts of a somatic motor neuron generate/propagate action potentials EXCEPT a) Initial segment Ob) Axon terminal Oc) Node of Ranvier d) Axon hillock