KINESIOL 1A03 Lecture Notes - Lecture 11: Dura Mater, Cervical Vertebrae, Conus Medullaris
Document Summary
Vertebral column vs. vertebral canal: column elongates until you reach maximum height, entire bony structure, canal stops growing after a few years, shorter than column, hole inside column where spinal cord is. *** nerves supplying lower limbs: exit lumbosacral enlargement, course down vertebral canal, exit via intervertebral foramina or sacral foramina. Nuclei: sensory nuclei: clusters of neuronal cell bodies in grey matter that receive input from sensory neurons, motor nuclei: provide output to effector tissues via motor neurons. Sensory and motor processing: sensory neurons pass through dorsal root into posterior horn. Synapse with interneurons or enter white matter, then ascend/descend the cord: motor neurons in anterior horn exit through ventral root. 10/25/2016 12:41:00 am: named for vertebrae beneath them, ex. As it moves towards spinal cord, becomes dura (like queen street into bristol) Epineurium = sleeves, dura = body of coat: axons are covered with myelin sheath which are all covered by endoneurium.