BIOS 1300 FINAL EXAM (ALREADY GRADED A+)

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