Biol&242
PNS Lab
Spring 2013
Learning Outcomes
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Name each cranial nerve, describe the information it carries (Sensory or Motor), and identify which
special or general sense it is involved with (if any).
Predict how damage to each of the cranial nerves might present itself.
Classify each of the reflexes that we test in lab as somatic or visceral, and cranial or spinal.
Predict how stimulation of the Sympathetic Nervous System will affect heart rate, blood pressure and
cardiac output.
Predict how increases or decreases in stimulation of sensory receptors might influence reflexes.
Diagram the anatomy a simple, monosynaptic reflex arc, and of any polysynaptic reflex arc.
Describe the branching and coalescing of a spinal nerve as it leads from its points of origin to finally join
the spinal cord.
Identify and describe the following structures on models, dissections & in histology slides:
Tissue, Cell, cell structure or Neurotransmitter
Relevant Histology Slide
Spinal cord: Gray matter, white matter, dorsal (posterior) horn, ventral
H15B
(anterior) horn, central canal, anterior median fissure, posterior median
H15F
sulcus, ventral root, dorsal root, dorsal root ganglion, cauda equina
Nerve: Axon, schwann cell, Nodes of Ranvier
H14C & H14D
Motor nerve, synaptic terminal
H13D
Procedure: Amerman, Unit 14: All Pre-Lab Exercises (except 2 and 6), plus the relevant Exercises and Unit
Reviews. There is lots to do in this lab. Get a partner and test your reflexes.