Explanation Nomenclature of the 31 pairs of spinal nerves: In order to understand the nomenclature of the spinal nerves, it is necessary to know the anatomical subdivisions of the spinal cord. The spinal cord is divided into four continuous subdivisions from superior end to inferior end as follows: Cervical region Thoracic region Lumbar region Sacral region The sacral region is further subdivided into sacral region and coccygeal region. The nomenclature for the spinal nerves is given based on the region from which it arises followed by Arabic numerals. Each side of spinal cord has 31 nerves. Each nerve pair performs the same set of functions assigned to that pair. The following is the nomenclature of spinal nerves: Spinal nerves that arise from the cervical region are known as cervical (C) nerves . They are eight pairs in number, namely C1. C2. C3, C4, C5, C6, C7, & C8 . Spinal nerves that arise from the thoracic region are known as thoracic (T) nerves . They are twelve pairs in number, namely T1, T2, T3,, T4, T5, T6, T7, T8, T9, T10, T11, & T12. Spinal nerves that arise from the lumbar region are known as lumbar (L) nerves . They are five pairs in number, namely L1, L2, L3, L4, &L5. Spinal nerves that arise from the sacral region are known as sacral (S) nerves . They are five pairs in number, namely S1, S2, S3, S4, &S5. Spinal nerves that arise from the coccygeal region are known as coccygeal (Co) nerves . They is one pair in number, namely Co1. The cranial nerves are given by the nomenclature CN followed by Roman numerals...

ANATOMY & PHYSIOLOGY: AN INTEGRATIVE APP

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Author: McKinley

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Question

Chapter 14.1, Problem 3LO

Summary Introduction

To discuss: The naming of the 31 pairs of spinal nerves and provide a general description of a spinal nerve and its composition.

Concept introduction: Spinal cord extends from the medulla oblongata in the brain. Spinal cord is part of the central nervous system (CNS). Thirty-one pairs of nerves that arise from the spinal cord are known as spinal nerves. The spinal nerves are mixed nerves. They carry motor, autonomic, and sensory signals between the body and spinal cord for relaying them to the brain.

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Chapter 14.1, Problem 2WDL

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Chapter 14 Solutions

ANATOMY & PHYSIOLOGY: AN INTEGRATIVE APP

Ch. 14.1 - LEARNING OBJECTIVE 1. Describe the two primary...Ch. 14.1 - Prob. 1WDL Ch. 14.1 - Prob. 2LO Ch. 14.1 - Prob. 2WDL Ch. 14.1 - Prob. 3LO Ch. 14.1 - Prob. 4LO Ch. 14.1 - Prob. 3WDL Ch. 14.1 - Prob. 4WDL Ch. 14.2 - Prob. 5LO Ch. 14.2 - LEARNING OBJECTIVE 6. Describe the locations and...

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