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5 Written Questions

5 Matching Questions

  1. Brachial Plexus: AXILLARY NERVE
  2. Sensory&Motor Tracts: POSTERIOR COLUMNS
  3. Spinal Nerve Branches: RAMUS
  4. The Major Plexuses: CERVICAL PLEXUS
  5. Meninges: ARACHNOID MATER
  1. a - 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.
  2. b - this nerve supplies the deltoid muscles and teres minor muscles.
  3. c - 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.
  4. d - 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. e - 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

5 Multiple Choice Questions

  1. - these tracts are involved with:
    1.) Subconscious Proprioception
    2.)Posture, balance, and coordination of skilled movements
  2. - 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.
  3. - the axon and its associated glial cells form this.
    - is a process projecting from the cell body of a neuron.
  4. - this nerve supplies most of the muscles of the anterior forearm.
  5. - 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 True/False Questions

  1. Internal Anatomy of Spinal Cord: GRAY MATTER- these are clusters of neuronal cell bodies, as functional groups.
    *Sensory Nuclei - receive input from receptors via sensory neurons.
    *Motor Nuclei - provide output to effector tissues via motor neurons

          

  2. Protective Nerve Coverings: PERINEURIUM- this is the outer connective tissue sheath, that bundles all the fasciculi together to form a single nerve.
    - consists of fibroblasts and thick collagen strands that mainly parallel the axis of the nerve.
    - this sheath gives the nerve the necessary tensile strength to resist the tensile forces than can damage the nervous tissue.

          

  3. Dermatomes- each spinal nerve contains sensory neurons that serve specific region of the body; the area of the skin that provides sensory input to the CNS via one pair of spinal nerves, the Trigeminal (V) Nerve is a....
    - the entire body is supplied by somatic sensory neurons that carry nerve impulses into spinal cord and brain stem.
    - underlying skeletal muscles receive signals from somatic motor neurons that carry impulses out of spinal cord.

          

  4. The Major Plexuses: BRACHIAL 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

          

  5. White Matter- each spinal nerve contains sensory neurons that serve specific region of the body; the area of the skin that provides sensory input to the CNS via one pair of spinal nerves, the Trigeminal (V) Nerve is a....
    - the entire body is supplied by somatic sensory neurons that carry nerve impulses into spinal cord and brain stem.
    - underlying skeletal muscles receive signals from somatic motor neurons that carry impulses out of spinal cord.

          

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