Lab 10 Review #1

this cell is responsible for the insulation of axons in PNS nerves via myelin sheath formation...

• schwann cells

• oligodendrocytes

• astrocytes

• microglia

the layers of a nerve include the...

• epineurium, perineurium, endoneurium

• epineurium, myoneurium, endoneurium

• perineurium, ectoneurium, endoneurium

• epineurium, perineurium, myoneurium

the CNS has four types of glial cells. identify these cell types...

• schwann cells, satelite cells, astrocytes, microglia

• ependymal cells, astrocytes, schwann cells, oligodendrocytes

• oligodendrocytes, microglia, ependymal cells, astrocytes

• satelite cells, oligodendrocytes, microglia, ependymal cells

the cell bodies of the following neuron type are located in the lateral horns of the thoracic and lumbar spinal cord...

• preganglionic parasympathetic fibers

• postganglionic parasympathetic fibers

this class of neurons transmits impulses away from the CNS to effector organs

• sensory (afferent)

• motor (efferent)

• interneuron

the superior colliculi are responsible for the following:

• auditory sense

• visual sense

the following neuron type consists of over 99% of the neurons in the nervous system...

• multipolar

• bipolar

• unipolar

• pseudounipolar

trace the pathway of cerebrospinal fluid through the brain

• 1. lateral ventricle

  2. 2. meninges

  3. 3. third ventricle

  4. 4. fourth ventricle

• 1. 1. meninges

  2. 2. lateral ventricle

  3. 3. third ventricle

  4. 4. fourth ventricle

• 1. lateral ventricle

  2. third ventricle

  3. fourth ventricle

  4. meninges

• 1. lateral ventricle

  2. third ventricle

  3. meninges

  4. fourth ventricle

in this class of neurons, the process divides into proximal and distal branches...

• multipolar

• bipolar

• unipolar

the rate of impulse propagation within a neuron depends on two factors:

• length of hyperpolarization period & degree of myelination

• axon length & degree of myelination

• axon diameter & axon length

• axon diameter & degree of myelination