ANAT 315 Chapter Notes - Chapter 2: Alar Ligament, Facet Joint, Intervertebral Disc

• School: McGill University
• Department: Anatomy & Cell Biology
• Course: ANAT 315
• Professor: Nicole Ventura

Document Summary

Large opening in the middle of the vertebrae. Where vertebral artery passes to get blood to brain. Between facets on superior and inferior articular processes. Guide and limit movement of the spinal motion segment. 3 articulations: dens & anterior arch (1, articular processes (2) Bottom of spinal cord, comes off of conus medullaris, extension of pia mater. Outer most layer of meninges around spinal cord. 2nd outer most layer of meninges around spinal cord. Inner most layer of meninges around spinal cord. Nerve responsible for the control of a group of muscles. Connects conus medullaris to the back of coccyx, stabilizing the entire spinal cord. Provide side to side tension for the spinal cord. Autonomic nervous system: involuntary control of visceral organs. Parasympathetic nervous system rest and digest. Sympathetic nervous system fight and flight. Somatic nervous system: voluntary control of sensory and motor function. Dermatome: region of the skin innervated by a single spinal nerve.