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5 Written questions

5 Matching questions

  1. The Major Plexuses: BRACHIAL PLEXUS
  2. Internal Anatomy of Spinal Cord: ANTERIOR MEDIAN FISSURE
  3. Reflexes & Reflex Arcs: REFLEX
  4. Brachial Plexus: RADIAL NERVE
  5. White Matter
  1. a - the roots of spinal nerves C5-C8 and T1 form this plexus.
    - this plexus provides almost the entire nerve supply of the shoulders and upper limbs.
    - Five important nerves arise from this plexus:
    1.) Axillary Nerve
    2.) Musculocutaneous Nerve
    3.) Radial Nerve
    4.) Median Nerve
    5.) Ulnar Nerve

    *study more info on Pg 597-599
  2. b - two grooves penetrate the white matter of spinal cord and divide it into right and left sides.
    - this is a wide groove on the anterior(ventral) side.
  3. c - 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.
  4. d - this nerve supplies the muscles on the posterior aspect of the arm and forearm.
  5. e - this is known to be a fast, involuntary, unplanned sequence of actions that occurs in response to a particular stimulus.

5 Multiple choice questions

  1. - this is a somatic branch that runs in the musculoskeletal wall of the body.
    - this branch serves the muscles and structures of the upper and lower limbs and the muscles and skin of the lateral and anterior regions of the trunk.
  2. - contain somatic motor nuclei, which are clusters of cell bodies of somatic motor neurons that provide nerve impulses for contraction of skeletal muscles.
  3. - each column contains bundles of nerve fibers that may extend up or down the spinal cord called tracts.
    * Sensory (Ascending) Tracts - consist of axons that conduct nerve impulses from the spinal cord toward the brain.
    *Motor (Descending) Tracts - consist of axons that carry nerve impulses away from the brain down the spinal cord.
    -both tracts are continuous w/ sensory and motor tracts of the brain.
  4. - this nerve supplies the deltoid muscles and teres minor muscles.
  5. - the axon and its associated glial cells form this.
    - is a process projecting from the cell body of a neuron.

5 True/False questions

  1. Spinal Nerve Branches: RAMI COMMUNICANTES- 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

          

  2. Protective Nerve Coverings: PERINEURIUM-this is a thicker sheath of connective tissue that packages groups of nerve fibers together into bundles called fasciculi.
    - consists of collagenous sheaths w/ up to 15 layers of fibroblasts distributed in a meshwork of collagen.
    - this sheath functions as a diffusion barrier that maintains the osmotic environment and fluid pressure w/in the endoneurium.

          

  3. The Major Plexuses: LUMBAR PLEXUSES- the roots of (anterior rami) of spinal nerves L4-L5 & S1-S4 form this plexus.
    - this plexus supplies the buttocks, perineum, and lower limbs.
    - the largest nerve in the body, the Sciatic Nerve, arises from this plexus, also the Pudendal nerve.
    *more info on Pg 602-603

          

  4. Spinal Nerve Branches: MENINGEAL BRANCH- 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

          

  5. Internal Anatomy of Spinal Cord: POSTERIOR(dorsal) 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.