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5 Written questions

5 Matching questions

  1. Brachial Plexus: ULNAR NERVE
  2. Protective Nerve Coverings: ENDONEURIUM
  3. Internal Anatomy of Spinal Cord: LATERAL GRAY HORNS
  4. The Major Plexuses: SACRAL PLEXUS
  5. The Major Plexses: COCCYGEAL PLEXUS
  1. a - the roots of spinal nerves (anterior rami) S4-S5 for this small plexus.
    - supplies a small area of skin in the coccygeal region.
  2. b - each nerve fiber sits in this loose connective tissue.
    - consists of of a mesh of collagen fibers, fibroblast's, and macrophages surrounded by endoneurial fluid (extracellular fluid) derived from the capillaries.
    - this fluid nourishes the neuron and provides the necessary environment for its function of propagating action potentials.
  3. c - 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.
  4. d - this nerves supplies the anteromedial muscles of the forearm and most of the muscles of the hand.
  5. e - 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

5 Multiple choice questions

  1. - motor neuron axons which transmit nerve impulses from the spinal cord to the periphery.
    - the cell bodies of the motor neurons are located in the gray matter of spinal cord.
    -cell bodies of motor neurons supplying skeletal muscles are located in anterior gray horns.
    -cell bodies of motor neurons supplying smooth muscle, cardiac muscle, or glands are located in the lateral gray horns.
  2. - arises from the conus medullaris.
    - is an extension of the pia mater that extends inferiorly and blends with the arachnoid mater and dura mater to anchor spinal cord to coccyx.
  3. - spinal nerves rise from the spinal cord as a series of these.
    -there are 2 types:
    1.)Anterior (ventral) Rootlets
    2.) Posterior (dorsal) Rootlets
  4. - integration takes place in the spinal cord gray matter for this reflex.
    - example of this type of reflex is the patellar reflex(knee jerk).
  5. - 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.

5 True/False questions

  1. External Anatomy of Spinal Cord: SPINAL CORD- these are the roots of spinal nerves emerging from the lower part of the spinal cord.
    - may resemble fine hairs such as "horse's tail"

          

  2. Sensory&Motor Tracts: POSTERIOR COLUMNS- motor output to skeletal muscles travels down the spinal cord in two types of descending pathways:
    1.) Direct
    2.) Indirect

          

  3. Reflexes & Reflex Arcs: CRANIAL REFLEX- integration takes place in the brain stem for this type of reflex.
    - example is the tracking movements of eyes as you read this sentence.

          

  4. Internal Anatomy of Spinal Cord: POSTERIOR(dorsal) GRAY HORNS- contain cell bodies and axons of interneurons as well as axons of incoming sensory neurons.

          

  5. Brachial Plexus: MEDIAN NERVE- this nerve supplies most of the muscles of the anterior forearm.

          

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