ZOO 3733C Lecture Notes - Lecture 9: Intervertebral Foramina, Spinal Disc Herniation, Epidural Administration
Document Summary
33-3 vertebrae (7 c, 12t, 5l, 5s, & 4-5 c) Chapter 2: movements: flexion, extension, lateral flexion, and rotation, contents of vertebral canal: contains spinal cord, nerve roots, csf, vessels, fat tissue, & meninges. Intervertebral disks (fibrocartilage): consists of an outer layer, annulus fibrosis, & the central nucleus pulposus o o. Form 20-25% of the vertebral column between the vertebrae, absorb shock, assure no friction between the bones and facilitate the movements of the vertebral column. o. Lowest functional disk is between l5-s1: herniation of the disk is more common in the lower lumbar region. Sciatica: occurs in lumbar disc herniation, may involve weakness in dorsiflexion(l5) & plantar flexion(s1) Cervical disc herniation: compress the spinal nerve, causing pain in the lower neck area and shoulders. Intervertebral foramen: contains the nerve roots, vessels of the spinal cord, and the dorsal root ganglion. Kyphoses-thoracic & sacral: concave anteriorly & primary (born with) Spinal cord: meningies has three membranes.
