Chapter 7 Nervous system Part II (PNS)

Chapter 7 Nervous System Part II (PNS) Objectives 

Peripheral Nervous System (pp. 249-263)

Describe the general structure of a nerve.

  • Identify the cranial nerves by number and by name, and list the major functions of each.
  • Describe the origin and fiber composition of (a) ventral and dorsal roots, (b) the spinal nerve proper, and (c) ventral and dorsal rami.
  • Discuss the distribution of the dorsal and ventral rami of spinal nerves.
  • Name the four major nerve plexuses, give the major nerves of each, and describe their distribution.
  • Identify the site of origin and explain the function of the sympathetic and parasympathetic divisions of the autonomic nervous system.
  • Contrast the effect of the parasympathetic and sympathetic divisions on the following organs: heart, lungs, digestive system, blood vessels.
Developmental Aspects of the Nervous System (pp. 263-266)
  • List several factors that may have harmful effects on brain development.
  • Briefly describe the cause, signs, and consequences of the following congenital disorders: spina bifida, anencephaly, cerebral palsy.
  • Explain the decline in brain size and weight that occurs with age.
  • Define senility and list some possible causes.     


Structure of a Nerve

  • Mixed Nerves
  • Sensory (Afferent) Nerves
  • Motor (Efferent) Nerves
Cranial Nerves
  • Olfactory
  • Optic
  • Oculomotor
  • Trochlear
  • Trigeminal
  • Abducens
  • Facial
  • Vestibulocochlear
  • Glossopharyngeal
  • Vagus
  • Accessory
  • Hypoglossal
Spinal Nerves and Nerve Plexuses  Autonomic Nervous System
  • Comparison of the Somatic and Autonomic Nervous Systems
  • Anatomy of the Sympathetic Division
  • Anatomy of the Parasympathetic Division
  • Autonomic Functioning


Peripheral Nervous System Terms

  • nerve                                                                                             
  • endoneurium
  • perineurium
  • fascicles
  • epineruium
  • mixed nerver
  • afferent (sensory) nerves
  • efferent (motor) nerves
  • crainial nerves
  • olfactory
  • optic
  • oculomotor
  • trochlear
  • trigeminal
  • abducens
  • facial
  • vestibulocochlear (auditory)
  • glossopharynteal
  • accessory (spinal accessory)
  • hypoglossal
  • spinal nerves
  • dorsal ramus (rami)
  • ventral ramus(rami)
  • plexus (plexuses)
  • cervical plexus
  • brachiual plexus
  • lumbar plexus
  • sacral plexus
  • phrenic nerve
  • sciatic nerve
  • Autonomic Nervous System
  • involuntary nervous system
  • preganglionic axon
  • postganglionic axon
  • sympathetic division
  • symphathetic chain (trunk)
  • collateral ganglion
  • parasympathetic division
  • terminal ganglion