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5 Written questions

5 Matching questions

  1. Reflexes & Reflex Arcs: AUTONOMIC (visceral) REFLEXES
  2. Brachial Plexus: ULNAR NERVE
  3. Internal Anatomy of Spinal Cord: ANTERIOR(ventral) GRAY HORNS
  4. The Major Plexuses: CERVICAL PLEXUS
  5. Spinal Nerve Branches: ANTERIOR (ventral) RAMUS
  1. a - this nerves supplies the anteromedial muscles of the forearm and most of the muscles of the hand.
  2. b - this plexus is formed by the roots of the first four cervical nerves(C1-C4), there is one on each side of neck.
    - supplies the skin and muscles of the head, neck, and superior part of the shoulders and chest.
    -Phrenic nerves arise from this plexus, and supply motor fibers to diaphram.
  3. c - 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.
  4. d - contain somatic motor nuclei, which are clusters of cell bodies of somatic motor neurons that provide nerve impulses for contraction of skeletal muscles.
  5. e - these reflexes generally are not consciously perceived. They involve responses of smooth muscle, cardiac muscle, and glands.

5 Multiple choice questions

  1. - spinal nerves rise from the spinal cord as a series of these.
    -there are 2 types:
    1.)Anterior (ventral) Rootlets
    2.) Posterior (dorsal) Rootlets
  2. - 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.
  3. - this is the most superficial of the 3 spinal meninges, and is composed of dense irregular connective tissue.
    - forms a sac from the level of the foramen magnum to the 2nd sacral vertebral.
    *Epidural Space - is a space b/w the dura mater and wall of the vertebral canal, filled w/ a cushion of fat and connective tissue that protects the spinal cord.
  4. - the axon and its associated glial cells form this.
    - is a process projecting from the cell body of a neuron.
  5. - two grooves penetrate the white matter of the spinal cord and divide it into right and left sides.
    - this is a narrow groove on the posterior (dorsal) side.

5 True/False questions

  1. Spinal Nerve Branches: MENINGEAL BRANCH- these are components of the autonomic nervous system(ANS)

          

  2. Intercostal Nerves- the anterior rami of spinal nerves T2-T12 do not enter into the formation of plexuses.
    - these nerves connect directly to the structures they supply in the intercostal spaces.

          

  3. The Major Plexses: COCCYGEAL PLEXUS- 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. Protective Nerve Coverings: EPINEURIUM-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.

          

  5. 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.

          

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