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5 Written questions

5 Matching questions

  1. External Anatomy of Spinal Cord: TWO ENLARGEMENTS
  2. Sensory&Motor Tracts: DIRECT PATHWAYS
  3. Protective Nerve Coverings: EPINEURIUM
  4. Reflexes & Reflex Arcs: AUTONOMIC (visceral) REFLEXES
  5. Reflexes & Reflex Arcs: REFLEX
  1. a - 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.
  2. b - from an exterior view of the spinal cord, two enlargements can be seen:
    1.) Cervical Enlargement - is the superior enlargement that extends from C4-T1. Nerves to and from the upper limbs arise from this enlargement.
    2.) Lumbar Enlargement - is the inferior enlargement, extends from T9-T12. Nerves to and from the lower limbs arise from here.
  3. c - this is known to be a fast, involuntary, unplanned sequence of actions that occurs in response to a particular stimulus.
  4. d - this pathway includes:
    1.) Lateral Corticospinal
    2.) Anterior Corticospinal
    3.) Corticobulbar Tracts
    - they convey nerve impulses that originate in cerebral cortex destined to cause precise, voluntary movements of skeletal muscle.
  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. - this nerve supplies the deltoid muscles and teres minor muscles.
  3. - 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.
  4. - integration takes place in the brain stem for this type of reflex.
    - example is the tracking movements of eyes as you read this sentence.
  5. - 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 True/False questions

  1. White Matter Columns- 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.

          

  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. Brachial Plexus: ULNAR NERVE- this nerves supplies the anteromedial muscles of the forearm and most of the muscles of the hand.

          

  4. Protective Nerve Coverings: NERVE FIBER- the axon and its associated glial cells form this.
    - is a process projecting from the cell body of a neuron.

          

  5. Meninges: PIA MATER- 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.

          

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