Chapter 12.1, Problem 12R

(A)

Summary Introduction

To determine: Ramus that carries sensory information from the limbs.

Introduction: The spinal and the brain make up the major part of the central nervous system. The spinal is the tube-like structure that begins from the medulla oblongata of the brainstem and extends toward the lumbar region of the vertebral column. The reflexes of the spinal cord can function without the input of the brain.

(B)

Summary Introduction

To determine: The root of a spinal nerve through which the visceral sensory information arrives.

Introduction: The spinal and the brain make up the major part of the central nervous system. The spinal cord is the tube-like structure that consists of 31 pairs of segments that each gives off the pairs of the spinal nerves. It emerges from the medulla oblongata and move towards the lumbar region of the vertebral column.