BIOS 1300 FINAL EXAM questions and answers (contains latest updates 2023) verified 100%

BIOS 1300 FINAL EXAM questions and answers (contains latest updates 2023) verified 100% where does the spinal cord end in an adult - L1-L2 what is inferior to the end of the spinal cord - cauda equina how many spinal nerves for each section - 8 cranial, 12 thoracic, 5 lumbar, 5 sacral, 1 coxxygeal why are the spinal nerves mixed nerves? - because they contain both motor and sensory 4 parts of gray matter - anterior horns, posterior horns, lateral horns, gray commisure what in the gray matter contains the motor nuclei? - anterior horns what in the gray matter contains the sensory synapses? - posterior horns what in the gray matter contains the autonomic nuclei? - lateral horns what in the gray matter surrounds the central canal? - gray commissure what is external to the gray matter - white matter white mater is subdivided into 3 pairs of - columns of funiculus individual tracts conduct either sensory signals from ________ or motor signal to ________ - receptors: sensory effectors: motor most pathways _______ from one side of the body to another at some point as it travels - decussate (cross over) referes to a relationship on the opposite side - contralateral means the same side - ispilateral has to travel up to the CNS - afferent process sensory information from skin, muscle, joints - somatosensory pathways process stimuli from the viscera - viscerosensory pathways Afferent sensory pathways - first order neuron, second order neuron, third order neuron which neuron does the dendrites of sensory neuron are part of receptor that defects stimulus cell body resides in DRG - first order neuron which neuron