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5 Written questions

5 Matching questions

  1. Internal Anatomy of Spinal Cord: POSTERIOR(dorsal) GRAY HORNS
  2. Internal Anatomy of Spinal Cord: LATERAL GRAY HORNS
  3. Protective Coverings of the Spine
  4. Spinal Nerve Branches: RAMUS
  5. The Major Plexuses: LUMBAR PLEXUSES
  1. a - the roots (anterior rami) of spinal nerves L1-L4 form this plexus.
    - there is minimal intricate intermingling of fibers in this plexus.
    -this plexus supplies the anterolateral abdominal wall, external genitals, and part of the lower limbs.
    - the Femoral & Obturator nerve arise from this plexus.
    *more info on pg 600-601
  2. b - the spinal nerve trunk runs for a short distance before branching into two large branches and a variable series of smaller branches, each large branch is called a??
    -this branch follows a specific course to different peripheral regions.
    -the 2 larges branches are:
    1.) Anterior (ventral) Ramus
    2.) Posterior (dorsal) Ramus
  3. c - contain cell bodies and axons of interneurons as well as axons of incoming sensory neurons.
  4. d - the first line of defense are the skull and vertebral column. vertebral column surrounds spinal cord providing as strong protective cases.
    - second line of defense is the Meninges, which are 3 protective membranes that lie b/w the bony encasement and nervous tissue.
    - Finally, central nervous tissue "floats" in Cerebrospinal Fluid, which cushions both the brain and spinal cord.
  5. e - these horns are b/w the anterior and posterior gray horns.
    - are present only in the thoracic, upper lumbar, and sacral segments of the spinal cord.
    - contain the cell bodies of autonomic motor nuclei that regulate activity of smooth muscle, cardiac muscle, and glands.

5 Multiple choice questions

  1. - include the Gracile Fasciculus and Cuneate Fasciculus, which carry nerve impulses for several kinds of of sensations that includes:
    1.) Proprioception - awareness of positions/movements of muscles, tendons, and joints
    2.) Discriminative Touch
    3.) Two-Point Discrimination - ability to distinguish touching of two diff points on the skin
    4.) Light Pressure Sensations -
    5.) Vibration Sensations
  2. - these reflexes involve contraction of skeletal muscles.
  3. - these are components of the autonomic nervous system(ANS)
  4. - this is the middle meninx(meninges), and is an avascular covering.
    - is connective tissue that resembles a spider webs arrangement of collagen fibers and some elastic fibers.
    - deep to Dura Mater.
    *Subdural Space - is a space b/w dura mater and arachnoid mater, which contains interstitial fluid.
  5. - first way spinal cord promotes homeostasis is by conducting nerve impulses along tracts.
    - often, the name of a tract indicates its position.

5 True/False questions

  1. Internal Anatomy of Spinal Cord: ANTERIOR(ventral) GRAY HORNS- contain somatic motor nuclei, which are clusters of cell bodies of somatic motor neurons that provide nerve impulses for contraction of skeletal muscles.


  2. Reflexes & Reflex Arcs: SPINAL REFLEX- integration takes place in the spinal cord gray matter for this reflex.
    - example of this type of reflex is the patellar reflex(knee jerk).


  3. Meninges: PIA MATER- this is the innermost meninx (meninges).
    - is a thin transparent connective tissue layer that adheres to the surface of the spinal cord and brain.
    - consists of thin squamous to cuboidal cells w/in interlacing bundles of collagen fibers and some elastic fibers.
    - contains many blood vessels that supply oxygen and nutrients to the spinal cord.
    *Subarachnoid Space - this is the space b/w the arachnoid mater and pia mater. contains cerebral spinal fluid that serves as shock absorber and suspension system for spinal cord and brain.


  4. Dermatomes- this matter consists of bundles of myelinated axons of sensory neurons, interneurons, and motor neurons.
    - also organized into regions called columns:'
    1.) Anterior(ventral) white columns
    2.) Posterior (dorsal) White columns
    3.) Lateral White Columns
    -each column contains distinct bundles of axons having a common origin or destination, carrying similar info.


  5. Spinal Nerve Branches: POSTERIOR (dorsal) RAMUS- this is a somatic branch that runs in the musculoskeletal wall of the body
    - this branch serves the deep muscles and skin of the posterior surface of the trunk.


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