Peripheral Nervous System (PNS) Chapter 13 continued I. Introduction II. Sensory Receptors A. Background B. Classification by Stimulus Type 1. mechanoreceptors 2. thermoreceptors 3. photoreceptors 4. chemoreceptors 5. nociceptors C. Classification by Location 1. exteroceptors 2. interoceptors 3. proprioceptors D. Classification by Structure or complexity 1. simple a. unencapsulated b. encapsulated 2. complex III. Nerves A. Nerve connective tissue layers 1. endoneurium 2. perineurium a. fascicle 3. epineurium B. Reminder 1. afferent 2. efferent 3. mixed C. Ganglia D. Regeneration IV. Origination A. Cranial Nerves 1) Olfactory (I) 2) Optic (II) 3) Oculomotor (III) 4) Trochlear (IV) 5) Trigeminal (V) 6) Abducens (VI) 7) Facial (VII) 8) Auditory (Vestibulocochlear) (VIII) 9) Glossopharyngeal (IX) 10) Vagus (X) 11) Spinal accessory (XI) 12) Hypoglossal (XII) B.Spinal nerves 1) dorsal nerve roots 2) ventral nerve roots a. Cervical C1 - C8 b. Thoracic T1 - T12 c. Lumbar L1- L5 d. Sacral S1- S5 e. coccygeal Co1