Reflex Model

Lab quiz 8 will be on the spine, the PNS and the ANS. There will be some overlap on the models. Below is a reflex model. First try to identify the afferent, integration, and efferent neurons in the reflex. Next, try to identify the spine structures. Move the mouse over to see if you are right. This page has a little more detail than the other 2 spine models. My goal is you see the relationship between the functions of the different parts of the spine and the regions. Be sure to see the simple spine model and the spine at C6.

Word Bank Anterior Horn Anterior Median Fissure Anterior Root Anterior White Matter - motor tracts Autonomic Motor Nuclei Central Canal Gray Commissure Integration Nuclei Lateral Horn Lateral White Matter - spinothalamic tract Posterior Horn Posterior Median Sulcus Posterior Root Ganglion Posterior Rootlets Posterior White Matter - sense tracts Somatic Motor Nuclei Unipolar Neuron Cell Body White Commissure

Notes Posterior = Dorsal Anterior = Ventral Ramus=singular. Rami=plural Gray and white MaTTer Dura, Arachnoid, and Pia MaTer. Funiculus= area of white mater in the spine. Thus, technically the posterior white matter is also the posterior funiculus.