1. Peripheral Nervous System
Chapter 13:
Peripheral Nervous System

2. CNS PNS Sensory division Motor division Sympathetic division Autonomic
Figure 13.1: Place of the PNS in the structural organization of the nervous system, p. 491.
CNS
PNS
Sensory division
Motor division
Sympathetic
division
Autonomic
nervous
system
Somatic
nervous
system
Parasympathetic
division

3. Figure 13.6: Distribution of spinal nerves, p. 509.
Cervical plexus
Cervical
nerves
C1– C8
Brachial plexus
Cervical
enlargement
Intercostal
Thoracic
nerves
T1– T12
nerves
Lumbar
enlargement
Lumbar plexus
Lumbar
nerves
L1– L5
Sacral plexus
Sacral
nerves
S1– S5
Cauda equina
Coccygeal
nerve C0

4. Figure 13.12a: Dermatomes, p. 518. C2 C3 C4 C5 T1 T2 T3 T2 T4 T2 T5 T6 T7 T8 C5 T9 C5
T10 C6 C6
T11
T12 C6 L1 L1 C6 C7 S2 C7 C8 S3 C8 L2 L2 L3 L3 L4 L4 L5 L5 S1 S1
(a)

5. Figure 13.12b: Dermatomes, p. 518. C2 C3 C4 C5 C6 C7 C8 T1 T2 C5 T3 T4 T5 T6 T7 T8 T9
T10 C6 C6
T11 C7
T12 C7 L1 C8 L2 S1 L3 C8 L4 S2 L5 S3 S4 S5 S1 S2 S2 S1 L1 L5 L2 L5 L3 L4 L4 L4 L5 L5 S1
(b)

6. English physiologist who first advanced the theory of how the
Marshall Hall – 1857
English physiologist who first advanced the theory of how the
reflex arc worked.

7. Figure 13.14: The basic components of all human reflex arcs, p. 521.
Spinal cord (in cross section)
Stimulus 2
Sensory neuron 3
Integration center 1
Receptor
Motor neuron
Interneuron
Skin 4 5
Effector