Chapter 13, Problem 7RQ

Summary Introduction

To distinguish: Between neurons and nerves.

Introduction: The nervous system controls and coordinates all the activities of animals. It is classified into two major types, namely the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS includes the brain and the spinal cord. The PNS includes neurons and ganglia. The primary tissue of this system is the nervous tissue.

Summary Introduction

To distinguish: Between the somatic system and the autonomic system.

Introduction: The nervous system controls and coordinates all the activities of animals. It is classified into two major types, namely the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS includes the brain and the spinal cord. The PNS includes neurons and ganglia. The primary tissue of this system is the nervous tissue.

Summary Introduction

To distinguish: Between parasympathetic and sympathetic nerves.

Introduction: The autonomic nervous system is a functional division of the peripheral nervous system. It involves two autonomic neurons in the efferent pathway, namely preganglionic neurons and postganglionic neurons. The cell body of the preganglionic neurons is in the central nervous system (CNS), whereas the postganglionic neurons lie entirely outside the CNS. The autonomic nervous system is (structurally and functionally) divided into two parts, namely the sympathetic nervous system (SNS) and the parasympathetic nervous system (PSNS).