Lecture XIV

avatar
Created by
C

Cards (25)

  • The Spinal Cord. Reflex arcs in nervous system are very different than endocrine system
  • The Spinal Cord. Example, mom says take out trash... okay is reflex arc and no is not
  • The Spinal Cord. Reflex Arc. Do not have to be homeostatic
  • The Spinal Cord. Reflex Arc. Requires stimulus response
  • The Spinal Cord. Functions and Structures. Spinal cord proper: white and gray matter
  • The Spinal Cord. Functions and Structures. Cervical enlargement: increased diameter to accommodate arm neurons
  • The Spinal Cord. Functions and Structures. Lumbosacral enlargement: increased diameter to accommodate leg neurons
  • The Spinal Cord. Functions and Structures. Conus medullaris: end of spinal cord proper
  • The Spinal Cord. Functions and Structures. Cauda equina: no gray or white matter, only axons and dendrites
  • The Spinal Cord. Functions and Structures. Gray Matter. Posterior gray horn has sensory neuron cell bodies, interneurons
  • The Spinal Cord. Functions and Structures. Gray Matter. Lateral gray horn has visceral motor neuron integration, sympathetic autonomic neurons
  • The Spinal Cord. Functions and Structures. Gray Matter. Anterior gray horn has somatic motor neuron cell bodies
  • The Spinal Cord. Functions and Structures. White Matter. Posterior white columns: send information up to brain
  • The Spinal Cord. Functions and Structures. White Matter. Groups of axons are ascending tracts
  • The Spinal Cord. Functions and Structures. White Matter. Medial to lateral rule: lower structures have axons closer to midline
  • The Spinal Cord. Functions and Structures. White Matter. Lateral white columns: depends on location
  • The Spinal Cord. Functions and Structures. White Matter. Lateral white columns, ascending and descending tracts
  • The Spinal Cord. Functions and Structures. White Matter. Anterior white column: somatic motor information
  • The Spinal Cord. Functions and Structures. White Matter. Anterior white column, axons move down from brain, descending tracts
  • The Spinal Cord. Features. Protection. Meninges. Surround by epidural space is filled with epidural adipose for cushioning and insulation
  • The Spinal Cord. Features. Protection. Meninges. Function. Anchor, protect, nourish, neurons and order structure
  • The Spinal Cord. Features. Protection. Meninges. Function. Dura mater is the most superficial, and strongest of dense irregular connective tissue
  • The Spinal Cord. Features. Protection. Meninges. Function. Arachnoid layer is made of simple squamous epithelium and attached to dura mater
  • The Spinal Cord. Features. Protection. Meninges. Function. Subarachnoid space is fulled with cerebrospinal fluid and for buoyancy, protection, nourishment with arachnoid trabeculae (collagen fibers) tether the arachnoid and pia mater together
  • Dura mater maybe connected to arachnoid mater by simple squamous epithelium with basement membrane