Info

Pia mater Arachnoid mater

Ventral root

Sympathetic trunk

Paravertebral sympathetic ganglion

Spinal nerves

Vertibrae Blood Vessels

Spinal cord

Dorsal root Dorsal root ganglion

Dura mater

Body of vertebra

Transverse process

Vertebral notch (forms part of intervertebral foramen)

Spinal cord

Dorsal root Dorsal root ganglion

Pia mater Arachnoid mater

Dura mater

Body of vertebra

Figure 11.37

A chain of paravertebral ganglia extends along each side of the vertebral column.

Preganglionic neuron Postganglionic neuron

Dorsal root

Posterior horn

Preganglionic neuron Postganglionic neuron

Dorsal root

Posterior horn

Posterior Branch The Spinal Nerves

Ventral branch of spinal nerve

Paravertebral sympathetic ganglion

To visceral effectors (smooth muscle of blood vessels, arrector pili muscles, and sweat glands)

Gray ramus

White ramus

Dorsal branch of spinal nerve

Sympathetic trunk

Ventral branch of spinal nerve

Paravertebral sympathetic ganglion

To visceral effectors (smooth muscle of blood vessels, arrector pili muscles, and sweat glands)

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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