Explanation To form a spinal nerve, the anterior roots and posterior roots unite. Anterior roots are two groups of the axon that form a connection between PNS (peripheral nervous system) and gray matter of spinal cord. Anterior roots of spinal nerve join to the spinal cord via a series of rootlets that originate from ventrolateral sulcus of the spinal cord. An elliptical area is formed by the anterior roots of the spinal nerve, which is called AREZ (anterior root exit zone). Anterior root or ventral root comprises the axon of motor neurons and their cell bodies remain in the gray matter of the spinal cord...

HUMN ANAT&PHYS ALC&MOD MA&P/ET&ACTV LRNG

2nd Edition

ISBN: 9780137374625

Author: AMERMAN

Publisher: PEARSON

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Question

Chapter 13.1, Problem 5QC

Summary Introduction

To review:

The structures thatunite to form a spinal nerve.

Introduction:

Spinal nerves originate from the spinal cord and are distributed everywhere inside the body. There are 31 pairs of spinal nerves found in the human body;they create a connection between the spinal cord and the body.

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Chapter 13.1, Problem 4QC

Chapter 13.1, Problem 6QC

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Chapter 13 Solutions

HUMN ANAT&PHYS ALC&MOD MA&P/ET&ACTV LRNG

Ch. 13.1 - What two subclasses make up the sensory division...Ch. 13.1 - 2. What is a lower motor neuron? How are upper...Ch. 13.1 - In what ways do the somatic and visceral motor...Ch. 13.1 - Prob. 4QC Ch. 13.1 - Prob. 5QC Ch. 13.1 - What structures are found in a peripheral nerve?Ch. 13.1 - How are sensations detected in the PNS and...Ch. 13.1 - 8. How are motor impulses transmitted from the...Ch. 13.2 - Prob. 1QC Ch. 13.2 - 2. What are the Roman numerals and main...

Ch. 13.2 - 3. What are the Roman numerals and main...Ch. 13.2 - List the 12 pairs of cranial nerves in ascending...Ch. 13.2 - Prob. 5QC Ch. 13.3 - Prob. 1QC Ch. 13.3 - What are the anterior and posterior rami, and what...Ch. 13.3 - 3. What are the key structures supplied by each...Ch. 13.3 - 4. Differentiate between the trunks and cords of...Ch. 13.3 - Prob. 5QC Ch. 13.3 - Prob. 6QC Ch. 13.3 - Prob. 7QC Ch. 13.4 - 1. What is sensory transduction? Ch. 13.4 - Prob. 2QC Ch. 13.4 - 3. What are the three components of a typical...Ch. 13.4 - What is a first-order sensory neurons receptive...Ch. 13.4 - What is the two-point discrimination threshold,...Ch. 13.4 - What is a dermatome?Ch. 13.4 - 7. Why is visceral pain often perceived as...Ch. 13.5 - 1. What are the main differences between an upper...Ch. 13.5 - 2. What is a motor neuron pool? Ch. 13.5 - What is the general sequence of events for...Ch. 13.6 - Prob. 1QC Ch. 13.6 - 2. How do intrafusal and extrafusal muscle fibers...Ch. 13.6 - What are the functions of primary and secondary...Ch. 13.6 - 4. How do Golgi tendon organs and muscle spindles...Ch. 13.6 - How do polysynaptic and monosynaptic reflex arcs...Ch. 13.6 - Prob. 6QC Ch. 13.6 - How are the flexion and crossed-extension reflexes...Ch. 13.6 - What are some potential effects of sensory...Ch. 13.6 - How do upper and lower motor neuron disorders...Ch. 13 - Mark the following statements as true or false. If...Ch. 13 - Prob. 2CYR Ch. 13 - 3. Define each of the following terms in your own...Ch. 13 - First, write the Roman numeral that corresponds to...Ch. 13 - Prob. 5CYR Ch. 13 - Match the following nerves with the structures...Ch. 13 - First-order somatic sensory neurons are...Ch. 13 - Prob. 8CYR Ch. 13 - Prob. 9CYR Ch. 13 - 10. Merkel cell fibers, tactile corpuscles,...Ch. 13 - 11. Place the following sequence of events for the...Ch. 13 - How do upper and lower motor neurons differ?Ch. 13 - 13. List and describe the basic steps involved in...Ch. 13 - 14. The lower motor neurons that innervate...Ch. 13 - Fill in the blanks:______ detect the degree to...Ch. 13 - Which of the following is the correct order of...Ch. 13 - 17. Mark the following statements as true or...Ch. 13 - Prob. 18CYR Ch. 13 - Prob. 1CYU Ch. 13 - Prob. 2CYU Ch. 13 - Prob. 3CYU Ch. 13 - Prob. 1AYKA Ch. 13 - Jason presents for evaluation after a severe...Ch. 13 - 3. When Mr. Williams goes to the emergency...Ch. 13 - 4. Maria is a 3-year-old who has been diagnosed...Ch. 13 - Another feature of CIPA is anhidrosis, or the...

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The structures thatunite to form a spinal nerve. Introduction: Spinal nerves originate from the spinal cord and are distributed everywhere inside the body. There are 31 pairs of spinal nerves found in the human body;they create a connection between the spinal cord and the body.

Concept explainers

To review: The structures thatunite to form a spinal nerve. Introduction: Spinal nerves originate from the spinal cord and are distributed everywhere inside the body. There are 31 pairs of spinal nerves found in the human body;they create a connection between the spinal cord and the body.

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Chapter 13 Solutions

To review:

The structures thatunite to form a spinal nerve.

Introduction:

Spinal nerves originate from the spinal cord and are distributed everywhere inside the body. There are 31 pairs of spinal nerves found in the human body;they create a connection between the spinal cord and the body.